can anyone suggest a good exhaust system for a 454. the engine is a 1998. i am running magnaflow catback on my truck and i really like the sound of it. i was thinking of running magnaflow on the chevelle too, but when i look on their website i didn't see any 454 applications listed

if your looking to do it yourself you can buy the pipes and mandrels and do it yourself fairly easily


or you can penny up and get a custom shop to bend you a set but your gonna pay $400 or more but thats dropping it off picking it up done in one day
thats with the mufflers too

we have a place called MUFFLEX here in jersey he does good work but expensive

i had a friend of a friend do a complete 3" setup on my mustang and my oldsmobile for $350 but i gave him the mufflers ....i think i pid like $200 fo rht emustang cause i run dumps on it

magnaflow wants $800 for the set up. i paid $500 for my truck system and i installed it out of the box.

Keep the head pipes at 3" Jaime. I use the big, BIG Magnaflow 12578s under my 67. Quiet enough, yet no restriction at at WOT.

My system was designed for a bigger motor, which I wont use, but 3.5" X #" X pipe drirect from Dr. Gas, Magnaflow 12578 muffs and Torque Tech tails.

Best deal is a 3" kit WITHOUT mufflers from Summit, etc. 3" tailpipes are big, and fit tight, and are quite unessesary under, say 600 hp.

By the time the exhaust gas hits the muff, its temps and pressures are way down. The size of tail pipe is more about looks/sound. I went 2.5". It isnt slowing down an "L88-type" motor at all. And I like the stealthier look.

i appreciate the help guys. any more ideas or comments... please feel free:beers:

i appreciate the help guys. any more ideas or comments... please feel free:beers:

Check out Torque Tech, I bought their 3" system, mufflers, clamps, etc. and I believe it was under $800 including shipping. The system fit extremely well and the customer service was excellent. Because of my headers I had to have one pipe custom bent locally for another $60.00. And listen to Gene, a 3" system will be loud but I do like it :).

i appreciate the help guys. any more ideas or comments... please feel free:beers:

Jegs Part #555-30555
# Header-Back Dual 3'' Exhaust Kit,1964-72 Chevelle/Malibu/El Camino
# Applications:1964-72 Chevelle/Malibu/El Camino
# 1965-72 Skylark/GS/Cutlass/442
# 1966-72 Le Mans/Tempest/GTO
# 1969-72 Grand Prix
# 1970-72 Monte Carlo

Utilizes an offset inlet/offset outlet muffler with a 13'' - 14'' length.

I have used these kits on both of my 68's, and they work great. I bought some hooker aero chambers and they sound great.

I just ordered the kit and mufflers from Jegs, and had my local exhaust shop, hang it, and completely weld it up for $150.00. I would suggest going and talking to the exhaust shop and get an estimate, just tell them you are supplying all the parts, you just need them to install it.

Good luck!!!!!

sounds good, thanks all

You can buy the flowmaster pipe set only and put the mufflers of your choice

I have the flowmaster full exhaust H pipe and all. it fits nice and sounds great. I have the 3 chamber bigblock mufflers on it.

how much did that cost ya? is it something you ordered right off the internet? 454 application?

I like Pypes Exhaust, not a bad price for Stainless.

yes, we had to do a little fab work since I had Long tube headers and electronic cutouts welded in. I really don't remember how much it cost me.

I don't care for the flowmaster muffler resonance at about 1700 to 2000 rpm

I don't care for the flowmaster muffler resonance at about 1700 to 2000 rpm

i know what you mean. i have 40 series flowmasters on my '91 LX Mustang and the resonance at 1800-2000rpms is mind numbing after awhile. going to be switching it to the dynomax super turbos soon. i have yet to hear a straight through type muffler that i like, that includes magnaflow, ultraflos, hooker max flows, none of them. they sound good at idle and part throttle but i just can not stand the sound at WOT and when you let off the gas from WOT.

I bought the magnaflow 2.5" stainless kit for my wagon. Problem I ran into was the center X crossover section comes welded together. Mine was irregular !?!?!

U could set it on a flat surface and see it. I went round with magnaflow and all they could tell me was they "guessed something moved when we welded that one" *DUH*.

If you can buy one local, magnaflow may be a good choice. Given my experience....wish I'd bought Torque Tech.