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Originally Posted by quadfather
THE 100MM'S TURBO'S OVERKILL , A PAIR OF 70'S WOULD BE MORE THAN ENOUGH. AND A NEARLY 500" SB WOULD BE A TIME BOMB. THE CYL. WALLS WOULD BE QUITE THIN , AND THE STROKE REQUIRED WOULD MAKE FOR A WEAK CRANKSHAFT. NOT TO MENTION THE PIN LOCATION WOULD COMPROMISE THE RINGSTACK MAKING THE PISTONS NOT VERY DURABLE. I THINK THE SAFE LIMIT FOR MOST TURBO SMALL BLOCKS IS A 427CI. IT'S A 4"STROKE WITH A 4.125 BORE THIS LEAVES THE BORE STABLE,AND LEAVES ROOM FOR A COUPLE OVERBORES IF YOU HURT IT. BUT IT STILL NEEDS A TALL BECK BLOCK FOR BEST RESULTS. IF YOU WANTED TO STAY WITH A SHORT DECK I'D GO WITH A 3.750 STROKE. CHECK OUT NELSON RACING ENGINES AND YOU'LL SEE WHAT A MOTOR LIKE THIS IS CAPABLE OF.
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I just finished acouple 499 dirt late model engine's,tall donovan blocks.both made 1100hp and a friend of has a pro street vette with a 648 and want's to change to TT's and use a 499 for base.