Z28XTC

iTrader: (5)

Wich makes the most power?And what other differences etc?

KrazyDan

If your highly modded, big cubes, or lots of boost, go 1 7/8. Anything else, 1 3/4 is plenty.

blkZ28spt

Level of modifications?

If you are asking, without giving a very long modification list, you should probably go with the basic 1 3/4"

bad6as

iTrader: (17)

would steped 1 3/4 to 1 7/8 be good for a full bolt on car SI and the ocasional 100 shot

Z28XTC

iTrader: (5)

Wich makes most power?I am buying today and in my future I have Nitrous, H/C &383 stroker kit.

orangeapeel

iTrader: (18)

You want a smaller primary size. I believe it to be that it may be overkill for most stock cubed applications unless you are running some retarded boost or shot.

orangeapeel

iTrader: (18)

It is the same principle as the rest of the exhaust. You will get better velocity out of the 1 ³/4 size anyway.

Z28XTC

iTrader: (5)

Overkill yes but you will see no less a gain than the 1 3/4 right?And could you explain why it would be better velocity.As I have got Nos wet system 100-150 shot on the way then 1 7/8 are the right headers for me correct?Also next year I will do a 383 stroker kit and bettter heads and cam where the 1 7/8s will be really helpfull or OrangePeel do you think I should change my order to the 1 3/4 headers?

Z28XTC

iTrader: (5)

ttt ttt

chrismcdaniel

iTrader: (14)

im using 1 3/4 stepped to 1 7/8th on a NA 408 there have been many comparissons done to show that the stepped headers will give you more low end torque and almost as much if not as much high rpm hp..

Poor Kid

if your going any further than a cam swap, get the bigger ones. you'll need them eventually and then you spending another 7 or 8 hundred bucks.

Z28XTC

iTrader: (5)

chris what do think of unstepped 1 7/8 headers do you lose low end TQ or something.

chrismcdaniel

iTrader: (14)

yea, you will loose some low end torque over the 1 3/4, but you will make moer HP on the top end with the 1 7/8th.. thats why the stepped headers are pretty popular.

Z28XTC

iTrader: (5)

Do you lose much TQ or just a little?

chrismcdaniel

iTrader: (14)

lot of factors to figure in on that, but you must also ask in regards to the 1 7/8th's

Do you gain much HP or just a little? its a trade off

Z28XTC

iTrader: (5)

ttt ttt

TheBlurLS1

iTrader: (8)

With a big stall you don't have to worry about loosing any low end tq, cause you'll never be in the low end.

I'd say go for the 1-7/8" now if you plan on doing that stuff later.

chrismcdaniel

iTrader: (14)

Id agree if this was a track only car, but i think he plans on driving this car on a regular basis. But, i dont see a probelm with the 1 7/8th's... like i said each one has a trade off thats why im staying with the stepped headers.

Z28XTC

iTrader: (5)

Thanks guys for the advice I am going with the 1 7/8s and I am also going to order a 3400 2.1 fuddle tomorrow, I think this should be a good combo with my 3.73s I have sitting in my room waiting to go on.I think my car is going to be one mean street car.After these mods Konis,strano swaybars,hotchkiss springs and nitto 555r's.I should be in the 12s Na with the above street set up and I am hoping with SD,k member,carbon hood,a arms,recaro or sparco buckets,some other weight reductions and a battery relocation 11s NA and if that didnt work nick williams 90/90 ,heads and cam then if that doesn't get me into 11s NA the 383 stroker will be next.Cant Wait 11s 10s what ever its gonna be fun.