Key Features. 7051 posts · Joined 2005. 18016 posts · Joined 2010. This technology resists blowout and burnout from high-temperature exhaust, and it is far stronger than the basic paper gaskets. 3HP: 1/30VOLTS: 115RPM: 3000AMPS: 1. 5 or 3 inch systems. Feb 14, 2007 · People that have 2 1/2 inch exhaust, wish they had 3 inch exhaust. Find 1972 CHEVROLET MONTE CARLO 7. com! Walker Direct-Fit Y-Pipes 40211. 55 H & X Pipe Exhaust Kits and Pipes. Get the parts you need to keep your boat’s engine running smoothly with Mercruiser 7. Chevy Big Block V8. Bed Side Type: Short & Long. 5-inch exhaust system is more cost-effective than a 3-inch exhaust system. 9 psi with the 3. 3 inch exhaust pipe and tubing - straight or mandrel bends - can give you that classic aggresive exhaust sound and easier installation. $159. 5 pipes. Flowmaster | #37815937. Hooker Headers LS Turbo Exhaust System Kit, 6L80/T56 (1) Exhaust System Type For example, a 500 horsepower engine would require a 5-inch exhaust pipe (split into dual exhaust that means a 2-1/2-inch diameter pipe for each engine bank). 5 in Int & Tail Pipe Muffler & Tip Not Incl Natural Finish 409 SS. This kit includes: Monster Exhaust System. The Mercruiser 502 riser elbow performs two important functions: it prevents cooling water from entering the exhaust manifold and directs the water out of the exhaust system. 5-inch exhaust system is better suited for vehicles with smaller engine or those Jul 5, 2017 · Over a smaller surface area (2. Fits all 1987 and Newer Used on most 454 7. Easy Way To Estimate: Your intake system needs to flow 1. Sep 1, 2019 · Let David Freiburger with Engine Masters help you decide as they present answers about power, tuning, and weight differences between 2. The smaller diameter means less material and less labor is required during manufacturing. 3 days ago · Find CHEVROLET 7. Corvette (53-Current) PART #: 25-183689-1 Corvette Exhaust Manifold To Heat Riser Valve Gasket, 2", 1957-1974. 95 /kit. Buy Item on Ecklers. as you can see, a single 3" pipe has twice the flow capacity of two 1 1/2 pipes. Part Number: PYE-SGA43R. Free Shipping. 3 Inch Length. 0 inch? I don't really know how much power I have. Select your '70 Chevrolet Chevelle sub-model and engine details to buy the best exhaust system that fits your needs. Limited Time - Introductory Pricing. Add to Cart. If you want to run a 2-1/2" exhaust system, run a 2-1/2 Mar 9, 2017 · I currently have have an old 2. CUSTOM EXHAUST SYSTEMS: •Custom, Hand Built •Smooth Mandrel Bends •Metal Finished TIG Welds •100% T-304 Stainless Steel •2”, 2-1/4”, 2-1/2”, 3” or larger •Ball Flange Design •X-Pipe or H-Pipe •Racing Quality Chambered Mufflers •Custom Tips, One-Off Designs Available •Black Ceramic Coating Available. 3" tubing, up to 300 hp per pipe. 5 or 3. 4L/454 Headers and get Free Shipping on Orders Over $109 at Summit Racing! Oct 29, 2019 · 2. 72 W Code 454 SS. Estimated Ship Date: Monday 6/17/2024. 3. +. Af Jan 18, 2006 · curtis73. 0 out of 5 stars. 7. Summit Racing carries steel exhaust pipe or stainless Sep 4, 2020 · Compatibility Performance:Specially designed for SBC, BBC, 302, 350, 454, and fits all 3. 454 Chevy Big Block V8. The final step was to install the 4. 5" pipe makes for a better heat exchanger. MSRP $697. 1983-2002 Includes: • 2x OEM MerCriuser Manifold 807078T08 Replaces 807078T10 Mar 24, 2023 · Here are some key features of a 2. 86 X Pipes Y Pipes and H Pipes. Add to Cart-10%. 99 $ 159. Corvette (53-Current) PART #: 25-121327-1 1968-1974 Corvette Aluminized Steel Exhaust Pipes 21/2" Small Block With Manual Transmission. Direct OEM Manufactured Replacement for Mercruiser Big Block Chevy 454/502 Manifolds and Risers. 99 /kit Find CHEVROLET 7. I've run 2 1/2" all the way to 650 HP. 99 ($10. 3", 4", 5"/6" diameters. 75. 5" pipe smaller surface area than 3" pipe). Part #: 42066 Line: WAL 1 Year Limited Warranty Aug 14, 2018 · Quick Exhaust System Math. 1 aluminum manifolds with stainless risers and a DRY joint between. Not Yet Reviewed. MagnaFlow 15750 Street Stainless Cat-Back Exhaust System. Oct 24, 2019 · The post-turbo back pressure dropped from 1. But you can step down one step after the muffler. Available at Holley. 550, 781 heads with some upgrades. )3. Provides three inches of rise to the exhaust manifolds for optimal exhaust system installation and proper engine operation. C3 Corvette exhaust systems are available in both individual components and complete exhaust systems for factory dual exhausts, off-road or welded exhausts, y-pipe systems and the optional side exhaust found on 1969 Corvettes. Flowmaster 15937 3 Inch U-Fit Universal Dual Exhaust Kit (1) Exhaust System Type: 3 Inch Electric Exhaust Cutout with Muffler Exhaust Valve Kit (1 Wireless Remote Controller, 1 Muffler) 5. Heavy-duty rubber. The takeaway: if you can run a single 3" exhaust with a Y merge and an open (i. This is an older thread, you may not receive a response, and could be reviving an old thread. Header Tube Type: Big Block V8 454 Chevy Big Exhaust Manifold Kit for Mercruiser and many Marine Power Big Block V8 454/502 CID Center Riser with 4 Inch exhaust. 5:1 compression. #9 · May 8, 2015. Y-Pipe, Stainless Steel, Natural, 3-bolt Flange Inlet, 3 in. Determine the power and sound you demand for your 1970 Chevelle and shop all available exhaust systems online. $814. May 2, 2008 · My car was quiet with the 454HO and 2. 4 Inch means the exhaust hose size that fits the riser is 4 inch inside diameter. 5" exhausts, which pertains to most of us. 4L/454 Exhaust Systems and get Free Shipping on Orders Over $109 at Summit Racing! 3. Better Torque at Low RPMs: A 2. 700 posts · Joined 2014. A typical small block engine didn’t like more than dual 2. Manifolds and 4" Risers Constructed from Cast Iron and painted with black corrosion resistant paint. Hooker Headers | #91602116. Exhaust System Type: Header-Back. Nov 26, 2019 · In my opinion, for all practical purposes a 2 1/2 inch exhaust for street driving is far more practical. 55 rear, tons of smiles per gallon D454 exhaust blower motorDIA (IN. This, of course, is a rough estimate, and there are several complex mathematical formulas to help you discover the "perfect" size pipe to use for your hot rod project. Shop online and get free shipping on orders over $35. E-20 in. 0 inch collector with Triangle (3 Bolt Pattern) Frequently bought together This item: LucaSng 2 PCS 3 Inch Copper Header Exhaust Collector Gaskets, Exhaust Gaskets, Durable, Reusable for SBC BBC 302 350 454 383 Exhaust Gaskets (3 Bolt Pattern) Our warehouse isn’t stocked with junk, instead of cheap 1995 Chevy K1500 Cat Back Exhausts, we stock 1995 Chevy K1500 3 Inch Exhausts that meet our standards of quality and affordability. When you are looking for the top quality replacement or add on part for your Corvette, look no Find the best exhaust manifold/header bolts & studs for your vehicle at O'Reilly Auto Parts. $474. 6 out of 5 stars 93 1 offer from $15. Walker Exhaust 35129 Exhaust Bolt and Spring. I compared the old Mercruiser cast iron manifold, 3 inch spacer and stainless steel riser with the newer 8. MagnaFlow | #37610702. Replaces Mercruiser #807988Q03, 807988A03 and 44354A3 Risers. 5 inch exhaust and I believe people will say that is the minimum size but if I may ask why do you want to go smaller ? Steve. Exhaust System, Crossmember Back w/H-Pipe 64-74 GM A Body Split Rear Dual Exit 3 in Int & Tail Pipe Race Pro Mufflers/Hardware. 2) H-pipe. 20786 posts May 6, 2007 · I think a dual 3 inch exhaust would be an overkill on your engine unless it's seriously modified and pumping over 500 hp, which most 396's don't do. For a possible 10+ hp/torque gain at higher rpm, a quiet 2 1/2 " system far outweighs the increased noise and drone of a 3". 1970 454 SS 460ci Big Block, Brodix Race-Rite Ovals (115 CNC chamber) 10. On a 500CI + engine, I would say 3" all the way, possibly 3-1/2" for the first 3 - 4 feet. Go with 2. 3) Keep the diameter adequate for enough flow, but the smaller the better. Headers and Exhaust Manifolds. #3 · Jul 29, 2014. $849. Material Type: Stainless Steel. Exhaust riser kit 93320A13 is for use on MerCruiser V-6 TBI stern drive engines with 2-piece exhaust manifolds (serial number 0M614999 and below). 0 Inch Exhaust Clamp,Butt Joint Band Clamp Sleeve Coupler Stainless Steel for Pipes,Mufflers,Catalytic Converters $19. 1 - 24 of 6112 results for Exhaust Pipe 3 Inch. Secrets for quiet exhaust: 1) keep it as long as possible. $1049. Hooker 2222-1HKR Super Competition Long Tube Headers, Cer. This means that EFI allows a smaller engine or less powerful engine to take advantage of larger pipes than a carbureted engine of similar power levels ever could. 80. e. Installed 18" Magnaflows - perfect. 33 out of 5 stars. 4L/454 Chevy big block Mark IV Exhaust Systems and get Free Shipping on Orders Over $109 at Summit Racing! Exhaust System, Header-Back, 3. #7 · Feb 15, 2015. Feb 6, 2016 · What a beautiful Chevelle SS this is! Our customer trusted us with his several year project to build him an all mandrel 3 inch performance exhaust system. 570 lift, dual plane intake, holley 3310 vac sec, running through a th350 with 12 bolt 3. 5" tubing, up to 200 hp per pipe. see-through) muffler, do it. Engine Family. Jegs sells 2 1/2 inch exhaust for $174. $297. $879. #5 · Jan 18, 2006. Good Way To Estimate: Take engine RPM x engine displacement, then divide by two. 00 Inch) (1 required per assembly) CONTAINS 2 RISERS 93322A 5 - Riser Kit - 6 Inch [ More info] Unavailable: 807477A 5 - Riser Kit -6 Inch [ More info] $774. Racers and Rodders choose us when they need a reliable 1994 Chevy K1500 Exhaust System Kits source bolstered by decades of automotive industry experience that other Exhaust Tubing Diameter: 3 Inch. 99 $ 19 . 5 CFM per engine horsepower, and your exhaust system needs to flow 2. 2014 Dodge Power Wagon. With the 3. 5 Inch Header Collector Gaskets(1 Pair) 2pcs Copper Header Exhaust Collector Gaskets 2 1/2" Exhaust Gaskets Durable Reusable for All SBC BBC 302 350 454 (3 Bolt Pattern) 4. Jul 9, 2002 · I'd like to know when it's necessary to go to 3 inch exhaust. MagnaFlow | #37615750. Hooker Headers |. Aug 25, 2005 · Dual 3=14. I don't know where you guys are getting the HP/required exhaust info. 5". Find GMC K3500 7. OEM number use R1756 clamp, use R1805 rain cap. 6 out of 5 stars 97 Amazon's Choice Exhaust System, Crossmember Back w/H-Pipe 67-74 GM Split Rear Dual Exit 2. Includes one pair of exhaust flanges for the Big Block Chevrolet 396, 400, 427, 454 Round Port hot rod motor (see motor applications below). stallonepanerai Discussion starter. 99 Get it as soon as Wednesday, May 29 Sep 24, 2019 · On early carbureted engines, pipe size was very critical. 0L Coyote, Models Without Active Valve Exhaust, Kit Part Number: BOR-11953 Not Yet Reviewed Nov 5, 2010 · I use 3 inch spacers on a 268 Searay on a 454 with raw water cooling on the manifolds. For International 454, 574, 674 Utility with C200 Gas or D239 Diesel Engines. 3 Inch Rise. 5-inch pipes but a big block was happy at 3 inches,” says Thompson. /kit. If you maintain the diameter of the collector to the secondary junction you will realize much better performance. 99. I switched over to a 3 inch exhaust on my 66 SS Chevelle 396/375HP last year and wish I left it alone with the 2. Price Based Off Aug 28, 2008 · George: Stick with the 2. Went to Pypes 3" and their StreetPro's in the 14", car was way too lod, droned bad (but did sound awesome). Collector, Chevy, GMC, Big Block, Pair. Jump to Latest Follow 454 572HP Tremec TKO-600 GOLD Member #783. Dec 24, 2021 · LucaSng 2 PCS 3 Inch Copper Header Exhaust Collector Gaskets, Exhaust Gaskets, Durable, Reusable for SBC BBC 302 350 454 383 Exhaust Gaskets (3 Bolt Pattern) 4. Aug 9, 2019 · They do a series of tests with single 3" and dual 2. Couple that with more of the hot exhaust transferring the heat to the pipe more efficiently because it is closer to it (center of the 3" inch pipe is farther away than the center of the 2. 550/. 25" exhaust on my 71 with a 454. 55 gears. Mercruiser style exhaust manifold and riser kit. Like. Twinshadows. Will also fit on MerCruiser stern drive and inboard tow sports MagnaFlow 35229 Stainless 3 Inch Round Polished Exhaust Tip. Heavy-duty rubber flapper valve keeps following seas from entering exhaust outlet when moving slowly or stopping. If you have to use a turbo muffler, a single 3" exhaust is going to give up serious power. Includes adjustable stainless-steel clamp. Muffler - Vertical Exhaust Inlet inside diameter 2 3/8 inch, outlet outside diameter 2 inch, overall length 30 inches. Then tried installing resonators behind the mufflers and on and on and on. 5 inch and 3-inch systems. 99. As far as performance goes and gain or loss would be negligible at your power level. FREE delivery Mon Header-Back Dual 3 in. Engine specs are: 454 with Diamond pistons around 10. Replaces Mercruiser #807078T08 and 89011A8 Manifolds. Your Price: $1,899. , LS1 / Miller Exhaust Tubing Diameter: 3 Inch. These are longbed systems; front extension pipes will need to be cut to fit shortbed models. 99 /each. Part Number: PYE-SGT78. Finish: Polished. 5 exhaust unless you want and need some DRONE inside the car. 1970-1972 C3 Corvette Exhaust System - 454 Automatic 25 Inch W/Welded Secondary Pipe & Mufflers This quality reproduction Exhaust System - 454 Automatic 25 Inch W/Welded Secondary Pipe & Mufflers is built specifically for the 1970-1972 C3 Corvette. $933. mr 4 speed. /each. Single or Dual: Dual. Add to Cart-34%. (Item #: 108165, Ref: R0301G) $27. 1372 in sq. Engine Version. WARNING : California’s Proposition 65. 9 horsepower at the same 6,400 RPM, while peak torque rose to 807 lb-ft of torque at 5,500 RPM. 4L/454 Exhaust Systems and get Free Shipping on Orders Over $109 at Summit Racing! Exhaust System, Header-Back, 3. Jan 31, 2018 · 1970 Big Block Chevelle SS 454 3" Pypes Violator exhaust, X-pipe. 25" tubing, up to 160 hp per pipe. Flowmaster 17742 American Thunder Exhaust System, 73-74 Chevy C10. Mad Maggot right off of Flowmasters sight, they recommend: 2" tubing, up to 100 hp per pipe. 1 aluminum manifold and stainless steel riser. 00/Count) Get it as soon as Monday, Jun 17 MagnaFlow 10702 2. Aug 20, 2009 · Steering at the moment towards one of the Pypes kits with the race-pro mufflers, but can't decide on the 2. 2-3/8 Inch. JEGS 555-30584 Header Back Dual Exhaust Kit Features: [Big Block Chevy 396-454 ci] (18) $184. Flange . Fits GM big block (V8) 454-502 cubic inch. To help you out, JEGS offers a wide selection of h and x exhaust parts and kits for Chevy/GM, Ford, Mopar, and custom applications. As a small bonus, you’ll also learn about a very simple combo for 600-plus horsepower from a 454 Chevy…. 5CW shaft end rotationShaft 1/4 inc x 1 1/2 inch, includes 5/16 bushingIncludes Centrifugal SwitchCross Reference:Used in Economite, in. headers. Walker Exhaust Flex Pipe - 42066. 3" will be louder then 2 1/2" Bigger is always louder. 45 /kit. This is the intake volume. 050 . 5 Inch Stainless Custom Builder Exhaust System. 4 Liter engines 1987 and later. 4L/454 Exhaust Pipes, Flanges and Turndowns and get Free Shipping on Orders Over $109 at Summit Racing! Save up to 10% on the Powersports Parts you Need! Vehicle/Engine Search Vehicle/Engine Search Make/Model Search Feb 14, 2015 · Vega$69. Add to Cart-36%. 00 in. Exhaust Tubing Diameter: 2-1/4 Inch. I have 3" exhaust with Ultra Flows on both my cars and both sound great. 00. 5 Flowmaster Delta 50's. $410. 99 /kit Schoenfeld Headers 2348. These flanges are cut with a CNC HD (High Definition) Plasma cutter out of 3/8” Pickled and Oiled (P&O) steel. X-pipes between the headers and the mufflers improve the flow capacity of the exhaust system and tame-down annoying harmonic vibrations and booming. Jan 18, 2006 · curtis73. Header Tube Type: Long Tube. Use this same volume of air for the exhaust system, but 3 days ago · Exhaust System, S-Type, Axle Back, 304 Stainless Steel, Ford, Mustang, 5. 95. Jan 19, 2011 · Our 3-inch exhaust baseline netted 527 whp at 19 psi. GASKET SET, Overhaul (1 required per assembly) (454 MAGNUM) 27-811572A92 - Gasket Set [ More info] Unavailable # 93322A 5: RISER KIT, Exhaust (6. Reducing the collector to 2-1/2" improperly will disrupt your secondary scavenging. Primaries, 4 in. Here are some motor specs to give you an idea. 2. This 572-cube Chevelle uses two 3-inch Flowmaster mufflers and 3-inch mandrel-bent pipes to evacuate the exhaust from 620 hp. Personally, I would go with the 3" system. Jumpstart Your Next Project! Find CHEVROLET 7. Estimated Ship Date: Tomorrow. Upgrading your vehicle's exhaust is a great way to add power and performance. For 706 with C263 or C291 Gas or LP756 with C291 Gas or LP Engine 856 with C301 Gas or LP Engine. 2 CFM per engine horsepower. 00 inch, Split Sep 28, 2021 · The primaries are made from 18-gauge 15⁄8-inch mild steel tubing, which is mandrel-bent and tuned by length to reduce backpressure and increase exhaust velocity. 4 454 & 502 Riser Elbows. 4L) big block @SummitRacing MERCH!!! https://da Description. 7L Cummins, CCSB, MCSB, CCLB (Single Rear Wheel Only) Improves throttle response and fuel economy by reducing backpressure. 2 out of 5 stars 46 Amazon's Choice Flowmaster 17200 American Thunder 3 Inch Exhaust, 68-72 GM A-Body. We’re exactly what you’ve been looking for, a 1995 Chevy K1500 Exhaust System Kits supply supported by a staff of technical experts that other online Shop GMC C25/C2500 Suburban 454 Chevy Big Block V8 Headers and Exhaust Manifolds and get Free Shipping on orders over $99 at Speedway Motors. S. Exhaust Kits With Mufflers. $553. I want to run a full system now with tailpipes. 1970 Big Block Chevelle SS 454 3" Pypes Violator exhaust, X-pipe. 2:1 compression Nov 23, 2005 · EVIL ENERGY 3. #36-5489 Tail Pipe Extension Set is required on all Crew Cab models. For 2019-2024 Ram 2500/3500 6. In this episode, I install the Summit Racing 3" Mandrel Bent Dual Exhaust on a 1998 GMC k3500 with the 454 (7. The Drone inside my Chevelle drove me nut's at 40MPH. 78. Jegs 3 inch exhaust sells for $194. 030 over BBC, Solid FT 272/282 , 238/248 @ . Talk to the experts. 5-inch system. Flapper valves prevent backflow and help to protect engines against water intrusion. Over the axle and exit near the back on the sides. 00 inch Find GMC C3500 7. Summit Racing™ Exhaust Tubing Mandrel Bends SUM-623043. Estimated Ship Date: Jul 8, 2024 if ordered today. 4L/454 Exhaust and get Free Shipping on Orders Over $109 at Summit Racing! Use your Summit Racing SpeedCard today, and get up to 10% back - Get Details! Vehicle/Engine Search Vehicle/Engine Search Make/Model Search Jul 29, 2014 · Factory they came with 2. At 29 psi, we went from a baseline of Here at Speedway Motors, we don’t carry cheap 1994 Chevy K1500 Cat Back Exhausts, we sell 1994 Chevy K1500 3 Inch Exhausts that fit your budget, without sacrificing on quality. Mar 16, 2012 · The biggest difference you will notice is the level of sound being greater with the 3" vs 2. I have been looking at the newer 8. P&O material is hot rolled steel that has been dipped in acid to remove the Fel-Pro ® Performance exhaust header gaskets consist of a high-density fiber-facing material attached to both sides of a perforated steel core. 0-inch exhaust to just 0. $169. com. Exhaust Tubing Diameter: 2-1/2 Inch. Exhaust System Type: MagnaFlow offers complete performance exhaust systems for your 1970 Chevrolet Chevelle. Run an X pipe for sure and of course high flow mufflers. #42522221HKR. Save Share. This design also provides a durable gasket that can seal slightly warped Nov 14, 2021 · This item: 3'' Mild Steel Custom Exhaust Kit Tubing Mandrel Bend Pipe Straight & U-Bend 16 Gauge Universal 8PCS $106. Universal Mild Steel Dual Exhaust Mandrel Bend Kit, 3 Inch (37) Exhaust System Type: Header-Back. May 8, 2015 · 8 posts · Joined 2015. Jun 27, 2004 · 3 inch exhaust question. Diameter, 16-Gauge, Each. -10%. Hydraulic roller cam Erson . Exhaust Tubing, Mandrel Bend, 45 Degrees, Steel, Aluminized, 3. 5-inch, Cerakote Black SideKick Tip. These kits will help change how your exhaust sounds as well as provide the benefit of improved Shop 454 Chevy Big Block V8, Headers and get Free Shipping on orders over $149 at Speedway Motors. 4L/454 Exhaust Pipes, Y-Pipes and get Free Shipping on Orders Over $109 at Summit Racing! Mar 6, 2008 · This item: $1940. 69 Nova Dart SHP 400 V8 engine, Autogear M23Z 4 speed transmission, 3. Walker Exhaust 31566 Exhaust Pipe Flange Gasket. 5" obviously) and there you have it--the 2. Zip’s line of Corvette parts includes correct hangers, clamps, side exhaust covers, reproduction and replacement Shop Manifolds, Headers and Gaskets and all other Exhaust products available now on NAPAonline and for pickup at your local NAPA Auto Parts store! Father’s Day: 20% Off $125+ *Code: FATHERS20 *Online Only. May 20, 2007 · One reason for the success of 3" exhaust systems is that they match the collector diameter. Added around 75-100HP, car was way too loud again with the same exhaust. Call 800. Jun 2, 2022 · DLT-454 dryer lint trap box also features a universal 4 or 5-inch exhaust collar The indoor dryer vent trap also improves drying capacity and reduces lint build up in duct The dryer lint trap is 100% compatible with the VENTS-US VK 100 PS dryer vent booster fan Description. The extra twenty dollars is worth the smile. Shop Patriot Exhaust 454 Chevy Big Block V8 Headers and get Free Shipping on orders over $149 at Speedway Motors. 0122, 7am-10pm, everyday. A 3" yielded absolutely zero gain. Replaces: Mercruiser 89011A8 and B-44354A3. 5-inch exhaust: Cost-Effective: A 2. People with 3 inch exhaust just smile. Manifold Gasket Set - This Gasket Set is used with 406046R1 Manifold. I really would have liked to see them do a test Buy Item on Ecklers. This Hedman cross-pipe is offered in 21⁄2 and 3-inch sizes. GLM Mercruiser 454 502 V8 Exhaust Manifold Riser Elbow Set 807078t08 807988q03 (3) Exhaust Elbow 4 Inch MerCruiser Dry Joint GM Replacement 864591T02 Extra Tall. 1973-89 Complete High Performance Bolt-On Exhaust Systems Connect without Welding. Only on Models Not Equipped with Factory Catalytic Converter. OEM MerCruiser 454 and 502 Exhaust Kit Fits: • 454 and 502 center riser style engines with 4 inch risers • Approx. 4 454 & 502 Riser Elbows from PowerBoatSupply. 427 . This design delivers more power and torque with crisp throttle response; the 21⁄2-inch collectors with a 3/8-inch-thick three-bolt flange make installation simple. $677. 0-inch race exhaust, which pushed the power output to an even 919. MagnaFlow 10702 2. (Item #: 100816, Ref: R1073) $58. Headers, Fenderwell, 2 1/4 in. Compare. And yes, an L34 is a 350 hp 396 big block. Shop the official site of Flowmaster for exhaust systems, mufflers, and more that deliver the iconic Flowmaster sound. Exhaust Tubing Diameter: 3 Inch. 5-inch exhaust, it climbed to 567 whp with a peak gain of 66 whp at 6000 rpm in fourth gear. Muffler - Vertical Exhaust Inlet inside diameter 2 15/16 inch, outlet outside diameter 3 inches, overall length 34 inches. I know several guys who have done the same thing (this is what I am doing). I have a suburban with a 454 3 inch exhaust going all the way back into a muffler branching off to two and a half inch pipes just before the rear axle they go up and over one goes to the right one goes to the left they're going straight out the back magnaflow exhaust system has a real nice sound to it. 31 posi. 99 $ 106 . Exhaust Nov 17, 2003 · Exhaust gas will cool down considerably at that point and lose volume reducing the requirement for the larger diameter tailpipe. $957. Add To Cart. Slip-fit Outlet Diameter, Chevy, GMC, Each. Filter & Sort Results. 979. 69. Oct 29, 2019 · LucaSng 2 PCS 3 Inch Copper Header Exhaust Collector Gaskets, Exhaust Gaskets, Durable, Reusable for SBC BBC 302 350 454 383 Exhaust Gaskets (3 Bolt Pattern) 4. xtuyvnewlyfokiunraee