Quote:
Originally Posted by turbo69bird
Tom , I have run that header for a long long time with no cracking at all.
It never hurts to have one but its really not needed if you mount your turbo properly.
same set of headers in thin mild steel never cracked either.
Those ARE 2MM thick Stainless!
BTW those are the exact same headers I ran when I won Pontiac day at Englishtown last year.
Only 6 sets of those headers left guys.
$685.00 per set +shipping for the full set like those
I also have sets of Just headers with V band flanges that end at the front of the block area for less $$.
They are made to fit 67 thru 69 firebird and require some radiator support and inner fender support modifications.
I ran 9.70's at 145 on those headers and I am currently getting 17 MPG on pump gas with the car.
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I may be over-concerned with the average street guy. The engines I test typically will have exhaust temps in the 1030 C range. That is 1900 degrees F and I will crack exhaust parts often under loads (like an off-shore boat would see): 30-40 minutes at high load/ rpm.
Tom Vaught
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"Engineers do stuff for reasons" Tom Vaught
Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward.
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