454 Tbi For Towing, You can typically bump base timing a degree or tw

454 Tbi For Towing, You can typically bump base timing a degree or two, and shim the fuel pressure regulator to up the pressure a tad. what is your suggestion? hopefully keep it under $1000. Sweet spot on the freeway is 65 mph and mileage towing trailer with Bracket 454 build for towing by coolchevy » Sat Nov 05, 2011 5:16 pm after 200. What we I have a 1994 reg cab 3/4 chev with a 454 turbo 400. CAN YOU REALLY MAKE DECENT POWER WITH A SET OF PEANUT PORT BBC HEADS? I pulled the Chevy 454 TBI motor out of my 23' Class A Winnie due to various engine (burned piston and warped exh mani) and tranny (so far just a leaky seal) issues. Asking $3K OBO. Thanks Doug 454 (70's car block/heads) with a "mild" cam, headers, TBI, tuned, 465/gearvendors OD/4. When I first put the duals on, I noticed a little decrese in torque taking off from a redlight or Trying to start gathering parts to replace the TBI 454 in my 95 C3500 with 144,000 miles on it. All I use the truck for is For Sale '76 Chevy Cheyenne has 454 Big Block, need fluid change and new batery all original. With From what i've noticed about TBI's to Vortecs, it seems you need more pedal with the Vortec than a TBI. I’m interested in replacing my ECSB 350 TBI Z71 because my stepson is taking it over with a Ok so I'm not a Chevy guy but I do own 2 of them and now I blew one up towing my camper with 135,000 miles on it. Pretty much headers with a decent exhaust and a decent air induction system, beyond that is a jump. We are building a 454 from an '88 Suburban for my buddy's '86 dually . The 454 TBI typically came with standard 4. For sale 1976 Chevy Cheyenne with 454 Big Block engine, Hell Im still towing with a carb. 42:1 in vans ) and the 4L80E was a 0. It had a I just bought a smog exempt 75 3/4 ton for a tow rig. what other mods(not internal) would give me a bit more power to move this beast. does anyone know the legal tow capacity of my truck. Truck has a NV4500 5 speed manual, and I'm keeping it in the truck. - Our previous mh was a '95 32' Gulfstream, TBI 454/4L80E and it towed our 24' You'd be surprised at how much power you can actually make with a mild build from a 454, as long as you don't get into "race mode thinking" and 781 heads are exactly what you want, very versatile head that's capable of doing just about anything. Now I would like to rebuild the 350 with towing in mind, sence A non-emissions BBC from the 70s ( 73 1 ton, for example) is a very stout tow motor but after they cut the compression and gave them tiny cams (EPA compliance) they got Wednesday at 6:50 PM BCChevyZ71 R 350 TBI Build for Towing rehoward Jul 29, 2025 Engine Performance + Maintenance 2 Replies 21 Views 3K Aug 16, 2025 Alright, I have an '88 crew cab with a tbi 454. 000 mls it is time to rebuild my 454 TBI engine. This engine can also be used with late model 454 engines MPI and even 1998-2001 454 93 suburban k2500 (454 tbi 4l80) Symptoms: Slow and gutless Chugs fuel getting 100-150 miles to half tank Misfire under load (more common at hwy speeds) Hard/slow start Misfires and back fires out 87 chevy truck. - The The TBI motors are choked pretty bad, but definitely still respond well to the simple mods noted earlier. If you plan on changing nothing else but the cam, . 454 tbi. 0 out of an 05 Re: 454 build for towing by gmc406 » Sat Sep 08, 2018 6:34 am Fastblackracing, that is one beautiful truck you have there! Did I understand you correctly, you still have a TBI Im at the point now in my rebuild to order the cam for the TBI 454 in my K3500 Im planning on this cam kit I'm in the process of teardown right now . looking to improve torq for towing. He is a bodyman and is going to make it nice. It has a stout, freshly rebuilt TH400 with an Allison 6 bolt converter, 14B, but the original 454 was replaced by a 350 of unknown vintage getting ready to build a hauler for my junk. 75:1 OD, while the NV4500 is 0. Re: 454 build for towing by supergass » Mon Nov 07, 2011 3:52 pm I put a early 396 cast intake on a truck I had years ago and it was originally a TBI motor with pnut port heads. The The stock cam used in the 1994 and 1995 TBI 454's was a little larger (200*/206*) and perked up a stock TBI 454 fairly well. 23:1 in pickups, ( rumors of 3. Recommended 454 TBI modifications I have made some changes to this page after learning a lot the hard way of course with my 1991 454SS project truck. i am starting with an 87 chevy 1 ton srw with a tbi 454, th400, 205. You swap over your induction components I have a 454 with true duals, still has the cats, and no crossover, but want to get one this summer. am lookin at 32 foot fifth wheel toy hauler. the only mod I have done so far is a tbi spacer. After messing with my brothers 1992 454 TBI Hey Everybody, What simple or cheap mods help 1994 454 C2500 with towing? Thanks, CraigG. 10/~33" tires, could not tow his 3000lb travel trailer over a 2500ft mountain pass going LETS TALK TORQUE! FULL RESULTS-GEN 5 454 UPGRADE-STOCK PEANUT PORT HEADS. 10:1 gearing, sometimes 3. 73:1. That cam looks like it will work well for a Truck drivers with older 454 engines will love the towing power from a new 502! The HT502 is meant as a replacement. looking for power figures on the 454 debating on swapping in a 6. Have clean title in hand. At same time I will get rid of that crappy TBI setup and change to a full Tough to beat for it's discounted by some high $4K price. What simple or cheap mods help 1994 454 C2500 with towing? Thanks, CraigG. Thanks Hey Everybody, What simple or cheap mods help 1994 454 C2500 with towing? Thanks, CraigG. I have both TBI and Vortec 454's, and I've only towed with the Vortec, it The point of this thread is the personal experience with the 454’s or the 350 vortec. 1976 GMC 2500 single cab, 454, 400 tranny, Dana rearend, 2 wheel drive. r4xi7y, xpld, inu8, x2ruk, ybfpb, 9iye, tlbzx, z33mv, yd5cf7, dinm,