I have just finished installing a set of headers on my blazer in preparation
for installing a GMPP HT 383 stroker. It sounds wicked bad. Not loud, but
nice and rumbly. I'm running 2 1/2 inch pipe from the 4 in 1 collectors
into a 3 inch Y-pipe and then into a single 3 inch flow master high flow cat
and muff. Sounds really nice coming off the line at stop lights. Gets
people looking. I haven't noticed much in the way of incrased hp, but the
off idle throttle response is very crisp, and acceleration has improved
dramatically, especially at highway speeds when passing, it really gets up
and goes. Isn't that the definition of increased hp? And I think that I
might be getting better mpg. Not too sure yet. I have to burn some more
dinosaur bones to see.
I'll keep the group posted on the progress.
I have purchased the HT 383 stroker this weekend from my local chev dealer.
I have been saving for approximately a year. But it's on b.o. until first
part of Sept. I hope the dated doesn't slip. I'm excited to see the
diference between a bone stock sb 350 and the rated 340 hp, 430 ft/lb torque
of the stroker.