My quick analysis and opinions...
1) Are you running 10:1 compression? If so, watch out throwing 9psi or even more at it...
2) A well built/machined stock 302 block with T6 6061 Girdle (like what DSS sells) with all ARP, etc. should hold up fine to 500 HP, maybe even 550 HP. Over that and you're pushing the envelope. Also, are you going to be dropping the clutch at 5500 with slicks out back and a drag suspension? If so, then look into the R-Block, over than that you should be fine.
3) DART also has some new blocks out there, but I think they require high dollar machining as well - but not sure. Just another option to consider.
4) Lastly, (and maybe this should have came first) what do you want out of the car in the end? That is the ultimate question that will determine whether you need to plunk down the big $ for the R-block or stick with the trusty stocker.
E
__________________
1991 5.0 LX Coupe - 40,750 miles
331 cu. in. / Tremec 3550 / BFG Drag Radials
12.22 @ 114.31 mph - w/1.89 60'
|