1 7/8" headers?
Nah bro I think your mistaken. A stock lt1 might lose some bottom end power from headers that big, but they make up for it in the upper rpm's. Especially heads/cam 355's and strokers. The op would definately benifit from the 1 7/8 headers, especially for that D1R.
If your not making big power IE 300RWHP, go with the 3/4's. I dont see how it would hurt with big power engines. I have LPP stepped 7/8 on my 384RWHP motor and cant say if they helped or hurt.
To answer your question.
Hedman
Kooks
LPP
To answer your question.
Hedman
Kooks
LPP
Last edited by wrd1972; Jun 25, 2009 at 08:19 AM.
Hedman, to my knowledge is the only company who make a 1 7/8 non stepped header for these cars.
They will not fit with an A/c Box under the hood, I modded mine to work with A/C.
Bigger headers DO NOT hurt power, where this crap came from I dont know. It may MOVE the power around in the RPM range, thats about it.
I have them on my car.
They will not fit with an A/c Box under the hood, I modded mine to work with A/C.
Bigger headers DO NOT hurt power, where this crap came from I dont know. It may MOVE the power around in the RPM range, thats about it.
I have them on my car.
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TECH Fanatic
Joined: Nov 2007
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From: Lansing, MI via Bowling Green, KY, Dalton GA, Nashville, TN & Atlanta, GA
I thought Kooks made a 1 7/8" header for these cars, but that doesn't appear to be the case. And bigger isn't necessarily always better.
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sorry but the reading skills on here have gone way down hill lately. 
When you use 1 7/8 headers don't you have to use the Stahl pattern to get them to work correctly?
TECH Fanatic
Joined: Nov 2007
Posts: 1,745
Likes: 18
From: Lansing, MI via Bowling Green, KY, Dalton GA, Nashville, TN & Atlanta, GA
Could you please point out exactly what it was about my post that lead you to believe I was referring to a stepped header design? Personally, I don't see anything, but apparently my skills for reading & comprehension leave something to be desired. And wouldn't 7/8 headers be really small?
Could you please point out exactly what it was about my post that lead you to believe I was referring to a stepped header design? Personally, I don't see anything, but apparently my skills for reading & comprehension leave something to be desired. And wouldn't 7/8 headers be really small?
TECH Fanatic
Joined: Nov 2007
Posts: 1,745
Likes: 18
From: Lansing, MI via Bowling Green, KY, Dalton GA, Nashville, TN & Atlanta, GA
wow I have to spell it out?..kooks does make a 1 7/8, ppl said hedman was the only manufacturer(non-stepped) so you took it as kooks didn't make a 7/8 size. and a strict 7/8 header would be small which is why ther aint such a size for sbc's jackass, you know it was short for 1 7/8
94 guy you have a pm. Thanks guys for the response I still didnt read if they fit well though and does anybody have pics? I need these for the car in my sig I am going for the 1k rwhp mark with a ltx and blower 
so every little bit help and the motor turns 7400rpm so it is very peaky anyway.
so every little bit help and the motor turns 7400rpm so it is very peaky anyway. 
