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Old 02-04-2011, 10:56   #1 (permalink)
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new guy with a numbers question

i just bought a rebuilt 460 short block with fly cut flat tops in it the cam is an edelbrock performer rpm. int lift is .556 ex is.581 exhaust duration is 300. looking to use stock d3ve heads with new springs will there be any propblem? the block is stock d9te-ab. also the rod numbers are d6ve-aa. thanks for any help. barry
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Old 02-05-2011, 19:10   #2 (permalink)
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cool Re: new guy with a numbers question

Quote:
Originally Posted by BARRY.L View Post
i just bought a rebuilt 460 short block with fly cut flat tops in it the cam is an edelbrock performer rpm. int lift is .556 ex is.581 exhaust duration is 300. looking to use stock d3ve heads with new springs will there be any propblem? the block is stock d9te-ab. also the rod numbers are d6ve-aa. thanks for any help. barry
You actually haven't provided a great deal of information. Generally speaking, that cam should not bring valve-to-piston clearance problems with D3VE heads specifically.

Depending on the aftermarket springs, you might have a problem with the seat pressures if the springs are supposed to have a 1.900" installed height, because the D3VE heads are set up from the factory for a 1.820" installed height (but this is easily addressable with C8VE/C9VE/D0VE head applicable valve lengths in the D3 heads instead of D3VE valve lengths). Also, with that much lift at the valve, it will be necessary to cur down the valve guide bosses and use PC-style valve stem seals in place of the OEM umbrella-type seals so that the seals don't get mashed by the retainer when opening the valves. Lastly, you're pushing it for the OEM valve train design in those heads with that much camshaft. It's possible to run it, but from a low maintenance turn-key standpoint, 0.550" lift is gennerally considered maximuim.

Paul
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