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and I do not want the complete system. I am leaning towards the EM headers right now just because I cannot find much information about the TPiS ones and the pictures I have seen of the EM on here look like they are extremely high quality.
I am thinking headers, high flow cats, X pipe, then into the stock mufflers. If my thinking is off please advise me. I am also not sure where to step down from 3 to 2.5” I am going to guess before the X pipe and will probably know when I start looking at that part of the system but it would be nice to know before pricing that piece out.
The EM headers are better anyway, I'd go with them
Why do you say that? Not trying to be argumentative, but TPIS headers have been getting good reviews on these boards. Mine fit fine and no gasket leaks after a year. So I am curious.
The EM headers are better anyway, I'd go with them
Why do you say that? Not trying to be argumentative, but TPIS headers have been getting good reviews on these boards. Mine fit fine and no gasket leaks after a year. So I am curious.
I have the TPIS headers on my car right now, when I was buying them the EM headers were not yet on teh market.
The main thing is that the EM headers are quite a bit easier to install than the TPIS headers. The EM headers slide in much easier. Also the TPIS headers moved the O2 bung to the side of the collector which required me to order some O2 wire extensions as the stock wiring harness would not reach. Lastly the coating used ont he TPIS headers flaked off on mine, I had them re-coated by a local caoter here because I didn't have the time to wait to send mine back to TPIS to get recoated (at the time my car was by daily driver)
Sorry to hear that the ceramic coating is flaking off the TPIS units.
The main advantage I see from them is that they have integral mounting bosses for all the accessories.
I'm not sure if you will get enough flow through stock mufflers to fully benefit from FL headers & hi-flow cats.
What are the flow numbers for stock mufflers and how much HP are you making at the crank??
The TPiS or the EM have integral mounting bosses for all the accessories?
Right now I am stock, just starting to put together stuff for next winter's projects, or this spring if I get real ambitious. At the moment the plan is to go with ported heads, 1.6 roller rockers, lt1 hotcam, electric water pump, double roller timing chain, and the headers. It’s my understanding with a good tune I should be some ware around 375-400 RWHP. if the stock mufflers chock it down a little that’s ok I am already spending a lot of money on this project and another $1000 for a cat back is not in the budget yet, besides I like the LT1 tips better than any of the aftermarket ones I have seen.
Check out MELROSE.com they might have what you need and will sell you just about any way you want. No cats, no air, no egr. x-pipe if you want and can get them JETHOT coated if you like. Bought a complete set (no mufflers) great work and finish.
wro87
The TPiS or the EM have integral mounting bosses for all the accessories?
Right now I am stock, just starting to put together stuff for next winter's projects, or this spring if I get real ambitious. At the moment the plan is to go with ported heads, 1.6 roller rockers, lt1 hotcam, electric water pump, double roller timing chain, and the headers. It’s my understanding with a good tune I should be some ware around 375-400 RWHP. if the stock mufflers chock it down a little that’s ok I am already spending a lot of money on this project and another $1000 for a cat back is not in the budget yet, besides I like the LT1 tips better than any of the aftermarket ones I have seen.
thunderracing has a Magnaflow catback for LT-1 cars for $349 I think. I was super happy with my Magnaflow on my 2000 WS6 I built up. Sounded the best out of several catbacks I've ever owned. That car was seriously SIC the way it loped and sounded .
The TPiS or the EM have integral mounting bosses for all the accessories?
Right now I am stock, just starting to put together stuff for next winter's projects, or this spring if I get real ambitious. At the moment the plan is to go with ported heads, 1.6 roller rockers, lt1 hotcam, electric water pump, double roller timing chain, and the headers. It’s my understanding with a good tune I should be some ware around 375-400 RWHP. if the stock mufflers chock it down a little that’s ok I am already spending a lot of money on this project and another $1000 for a cat back is not in the budget yet, besides I like the LT1 tips better than any of the aftermarket ones I have seen.
You're going to have to buy some really good heads to make that kind of rwhp with that set-up (probably a larger cam also). My guess is that you will be in the 340-350 range.
You're going to have to buy some really good heads to make that kind of rwhp with that set-up (probably a larger cam also). My guess is that you will be in the 340-350 range.
I am now thinking about maybe going with Llyod Elliott's heads LE1 or LE2, leaning tword the LE1 head cam package. Not building a race car just want a little more for the on ramps and the grin factor. Even at 340 350 I would be about 100 more horses than I have now and that would probably do me quite well.
I've had TPIS headers on my 86 383 for close to 40,000mi's. Ceramic coating is still in real good condition. They were a little difficult to install, especially the pass side which needed a dimple to clear a suspension bolt. They seem to work well...
I know nothing about the other headers mentioned, but figured I'd throw in my 2 cents .
I've had TPIS headers on my 86 383 for close to 40,000mi's. Ceramic coating is still in real good condition. They were a little difficult to install, especially the pass side which needed a dimple to clear a suspension bolt. They seem to work well...
I know nothing about the other headers mentioned, but figured I'd throw in my 2 cents .
Thanks I want all the input I can get at this point. I do not want something I will have to modify though so it is looking more and more like EM is the way to go for me.
I don't know why you couldn't make 375 with a hotcam or cc305 ported heads, headers and a few bolt on's. LT-1 Fbody guys can, why shouldn't the vette ?????