Thanks kjett! I couldnt agree more. Dont really want to spin it up there and wont if not needed, but this thing revs very quick and gets up ther in a hurry. If you read through the post again you will see why these SIRs are in this engine. Its all about the dollar and utilizing what I already had on hand. In some of my previous posts I was concerned with these rods, but, for the couple hunderd bucks I have in this short block, I figured it was worth a try.
The cam is a vacuum custom solid roller. Its pretty big on duration @ .050 but short on lift. 245 in/253 ex @ .050 and 628 lift. its on a 108. Sounded like a dump truck in my 532 and 466 but pretty thumpy in the 437. It used to pull 17 @ 1000. now its 14 @ 900 which still puts me in the class I run. Like I said, its solid roller and has 250 psi of seat pressure so it goes as high as needed. I have the limit @ 7500 but its pretty scary there!!!lol.
The headers? Well, thats a touchy subject. I paid a local muffler shop to build these headers. They are 2 1/4 in frame. The tubes are very long and not mandral (spell?) bent. So they are not what you call "free flowing". The only other options were LnL 1 3/4 and i didnt think that would matter either way. Also, these headers cost me 1000.00!!!!!Stupid I know!! Live and learn on that deal.Not to mention they fit NOTHING else!! All in all i dont think they are too much diameter.
_Greg