I was reviewing the process for my 70 340 HP exhaust manifolds. I am currently trying to decide on a Winter project, and I am considering the Dougs or TTI headers. But when I read this thread, it got me curious when the price was lower than the TTi's. I will assume that the extrude hone will not give the performance of the Dougs/TTi's, but that got me curious to see if anyone has done any testing of their own on this process to see that the actual gains may be.
Thanks for the pictures Scott!!
I have emailed them to see if they have done any of their own flow/hp/tq tests but I have yet to hear back from them.
Thanks again.
It's not going to give you the gains a set of full length headers do .
