Hitting 400rwhp in an LT1
Originally Posted by Fastbird93
Honestly, with the 224/230 on a 112* LSA, a GOOD set of stock ported heads, and a set of 1.7 rockers, you may make it to 400 with everything right. That's what I was shooting for before I found my bottom end took a crap.
I have "only" comp cams 1.6 RR's. My stock heads have been thoroughly ported and polished, but the MAC mid-length headers are choking them (at least that's the theory). Even if I pick up 20 RWHP ( a stretch?) by switching to long tubes, I still won't hit 400.
I don't have flow numbers for the heads. Had a guy with a good reputation do a hand port and polish on them in his own garage, so it wasn't a fancy-schmancy shop with a flow bench etc.
I seriously doubt you're going to pick much if any peak HP and TQ by switching to long tubes. Under the curve you'll probably stand to pick up a bit, but top end, probably not.
It's possibly with that cam, but EVERYTHING has to be well matched.
It's possibly with that cam, but EVERYTHING has to be well matched.
Originally Posted by 97M6Formula
I am only 20 hp/tq away from 400 with home ported heads and intake stock throttle body and mods in list thats na by the way
I cant find it im looking for my other one to where I dynoed 350/350 with huge 11 degrees of KRI have taken out many zo6s and lost by one car 1.5 cars to my friends heads/cam ls1 when he was on a et street with hals and a 9inch and me on my ten bolt street tires and stock susp...heres a vid of his car but this isnt the race im referring to...... http://cpowell8384.tripod.com/sitebu...files/sean.wmv
Thread Starter
Launching!
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From: MI
UPDATE: Ok, this really blows. My car was running great for about a day. I've figured out why it is running like complete a$$ . . . 8 of the 16 COMP-R lifters have collapsed and are not recovering. I initially thought we might have installed them wrong. But the car ran perfect for a day! How the hell can that be? More-over, when we installed them, the rockers were adjusted exactly to the specifications given by COMP's tech-line. The guy at COMP said the lifters were probably defective from the get-go. I'm thoroughly disgusted. These were supposed to be the best hydrolic lifters money could by, and in less than 50 miles, they're shot. How they hell do you get a box full of parts that are HALF bad!!?? What kind of quality control are they running - or is there any? COMP says if I send them my lifters back they "might" give me some new ones, provided they decide the lifters are in fact defective.
Let's assume for a second that I was the one who screwed something up: I adjusted the pre-load on each lifter to COMP's specs, I have the right length push-rods, is there something else I could have missed?
Let's assume for a second that I was the one who screwed something up: I adjusted the pre-load on each lifter to COMP's specs, I have the right length push-rods, is there something else I could have missed?
