ZFNHSN posted:ALB posted:You must be running, what, somewhere around .125- .140" deck to make those heads live on the street?
ALB, you got it. Can you believe .130? I'm thinking about going from 1.25 to 1.4 ratio rockers because I added 80 lbs total rotational weight (+20 lbs each axle). Porsche OEM raised ten slot Lemmerz wheels are HEAVY
I've heard of other guys doing the same thing with wickedly flycut heads that were formerly on race engines and although not optimal on the street, it can work. Some engines with big deck height will ping at the very top of the rpm range. As long as you don't rev it right to the very top constantly you'll probably be fine.
When fully warmed up, how high does the engine go with power when accelerating in 3rd gear? I always suggest doing it in 3rd because it's easier to feel when the engine stops making power than in 1st or 2nd. I'm asking because I'm curious as to how the 105° LC 86B runs- at 108° it's very similar to an Engle FK8, making power to about 6500. So where does yours stop?
1.4 rockers would be a great addition- they'll allow you to get more of the power the heads are capable of. You might have to do new pushrods as well, though, so if you're doing the work yourself you'll be learning all about setting up rocker arm and pushrod geometry for best life.
And I know the oe Lemmerz wheels are heavy, but at 20 lbs each axle that's 40 lbs, right? The Fuchs you took off weigh 11 (5½) or 12 lbs (6" wide) and the steel wheels should weigh in the neighborhood of 22 lbs? Still, you're right, they are heavy. Put those alloys back on! The car looks so great with them.
I apologize now because I know you've told me before, but what's your first name? And call me Al