how much deflection do you have at 500ish lift .. with that much lift might consider having it done though . I went ahead and put them in my heads because I had 1.6 rollers and different legth pushrods to center it and there was 3 with .008-.010 slop . no idea on cost I did it myself .
it's a 318 built like a 340 flat tops 10:1 floating rods steel crank ..cam is a complete cam ground for nitrous and thru the 1.6 full rollers it's .528 lift .. I ported the 915 heads and put the last set of trw valves i had with new springs retainers keepers ect . had a m1 intake on it but the...