Electric WP or 1 7/8" headers?
Electric WP or 1 7/8" headers? I have built an N/A LS3 headed 408 together and would like to know where I could get the best bang for my buck. I currently have 1 3/4" pacesetters, ORY, E cutout, and Magnaflow CB on my car. When I put my new motor in I have been considering going with a new set of headers through the same exhaust that I plan to keep as I like my car quiet when I have the cutout closed. I would like to know which would yield the most HP if I could only choose one. A set of larger headers through the same exhaust or a new meziere EWP.
When u say built..we should assume a cam and the fixns..so if its a nasty H/C then maybe the 1 7/8 headers would help..the $$ could go for other things..more info would help such as is this going into ur z28 or did u buy a a 2010 camaro?
im guessing that its going into a z so..what mods do presently have such as suspension, rear end, auto/m6 ..stall..gears..induction..
im guessing that its going into a z so..what mods do presently have such as suspension, rear end, auto/m6 ..stall..gears..induction..
Thanks for the help folks. I figured I would get better bang for the buck with the headers but just wasn't sure it would be very much without running spiral flows to dumps, etc. I'd still like to keep the full length exhaust as it is very much a street car. I have a 6sp and 9" but also have a braked/stalled TH350 sitting on my garage floor that I may put in.
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FWIW, when I had my 408 I went from 1 3/4" headers to 1 7/8" headers and gained absolutely zero.
For the best bang for your buck, even though it's not on your list, IMO, would be to throw that 350 in there and get a real good converter.
For the best bang for your buck, even though it's not on your list, IMO, would be to throw that 350 in there and get a real good converter.
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Verdad Gallardo Very interesting tektrans. I plan on putting the 350 in for some fun at the track but would like to keep the T56 around for some fun on the street as well. Just curious if it would even matter that much going through a full exhaust. Thanks for the input everyone! BTW, car has 3.89 gears in it and I'm running an LS3 intake.
I agree with Tektrans....I have a meziere ewp...looks trick, keeps the engine cool,etc but I can't feel any difference. Doubtful you will gain much (if any) with the larger diameter headers with a very efficient exhaust like yours. If you have $600-1000 burning a hole in your pocket, head or valvetrain work is where I would concentrate for the engine ....OR....you can also lighten that car up. No one likes to concentrate on pulling out weight because it is not glamorous and does nothing when you pop the hood but dropping a few hundred pounds does wonders for ET. I took a Winter season to substitute carbon fiber, chrome moly and aluminum for a lot of factory parts, removed interior parts,drilled holes, etc and dropped 400lbs...big difference in traction/60 foot and ET
If you already have headers I wouldnt waste the cash on new ones. The FAST intake like mentioned above will improve over the LS3 intake especially if its ported. The gains get even better with a cam and heads.
What about a underdrive pully? you should get 5-7 wheel power with that.
I doubt you will see that much of a gain going a tad bit bigger with headers because your choke point is probably somewhere else (intake/TB/MAF) but you could get the headers, and sell your old headers and maybe find a way to afford both
I doubt you will see that much of a gain going a tad bit bigger with headers because your choke point is probably somewhere else (intake/TB/MAF) but you could get the headers, and sell your old headers and maybe find a way to afford both
Thanks for the input. I figured the larger headers would add more overall volume to the exhaust and help responsiveness. I have a 25% UDP at the house but was considering going with a new ATI pulley to go with my new combo. EWP is out. The heads are shaved .030" for an ~11.1:1 SCR. Cam is mild 232/238. Anyone else think a FAST 102 intake and TB would be worth the gains over an LS3/90mmTB setup? Both would have a TSP 100mm MAF and FTP 104mm lid in front of them.
Thanks for the input. I figured the larger headers would add more overall volume to the exhaust and help responsiveness. I have a 25% UDP at the house but was considering going with a new ATI pulley to go with my new combo. EWP is out. The heads are shaved .030" for an ~11.1:1 SCR. Cam is mild 232/238. Anyone else think a FAST 102 intake and TB would be worth the gains over an LS3/90mmTB setup? Both would have a TSP 100mm MAF and FTP 104mm lid in front of them.
