What kind of gains by going to 1 7/8" headers?
03-18-2009, 08:45 AM
#1
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What kind of gains by going to 1 7/8" headers? Have a 408 with a big cam, Dart heads, Fast 90/90, TSP duals, etc... Currently running TTS LT headers which I assume are standard 1 3/4 headers. Just curious what kind of gains I can expect if I were switch to a 1 7/8" header.
03-18-2009, 08:50 AM
#2
On your 408ci block and along with that huge cam, I'd say you'd gain quite a bit of power by going with the larger headers, allowing for more exhaust to breath out.
IMO, one of the few cases where the 1 1/8" header would be worth the money for the HP gains.
IMO, one of the few cases where the 1 1/8" header would be worth the money for the HP gains.
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03-27-2009, 08:26 AM
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Considering I gained 10rwhp and 8rwtq from swapping 1 3/4 TSP headers to 1 7/8 ARH headers on a stock bottom end 346, I'd say its well worth it with larger cubes moving more air.
03-27-2009, 09:50 AM
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03-27-2009, 01:57 PM
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+1, I have 3/4's but im not planning to get a huge thing going here. If you had a bigger motor like above and all the work done like above, then hell yes I would go with 7/8s. I would imagine with a tune they would be worth a good 20rwhp over the 3/4s
03-27-2009, 03:01 PM
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don't mean to jack the thread but I have a simple question. My ws6 is bone stock and I plan on going with LT, ORY, and cat back soon. Should I order the 1 7/8" or 1 3/4 ? I plan on keeping the car a 346ci but pushing about 400rwhp "eventually" maybe some spray down the road also.
I guess what I am asking is....will the 1 7/8" hurt performance on a bolt on only car ?
I guess what I am asking is....will the 1 7/8" hurt performance on a bolt on only car ?
03-27-2009, 03:33 PM
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Ive had the 1 7/8 on a bolt on only car and it lost bottom end torque but gained in the very upper part of the power band.
I have 2" KOOKs on my 408 with spray.
I have 2" KOOKs on my 408 with spray.
03-31-2009, 10:57 PM
#18
don't mean to jack the thread but I have a simple question. My ws6 is bone stock and I plan on going with LT, ORY, and cat back soon. Should I order the 1 7/8" or 1 3/4 ? I plan on keeping the car a 346ci but pushing about 400rwhp "eventually" maybe some spray down the road also.
I guess what I am asking is....will the 1 7/8" hurt performance on a bolt on only car ?
I guess what I am asking is....will the 1 7/8" hurt performance on a bolt on only car ?
04-01-2009, 04:35 PM
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IMHO i would say go ahead and get the 1 7/8 because you say that you will stay with 346 but like many of us.... it just dont happen that way. so why buy headers twice???? i made that mistake already.....
