Quote Originally Posted by FFM
That combo is pretty damn impressive.
That uses a roller cam, now I'm wondering, my block is not a roller block. How spendy is it gonna be to make it a roller?
Also, wouldn't you think it would be possible to get lets say 480 HP and just over 500 LB FT with a hydraulic flat tappet such as the magnum 280? I'm seeing a combo, which uses the AFR's and the magnum 280 hydraulic flat and they are claiming 471 hp and 515 torque.

-FFM
It depends on how good you want it.
To be safe I would say it would add about $550 to the build price if you figure the other hyd. cam and lifters at $140 and you would need a better valve springs also.
I run a small or reduced base circle cam in any of the 383's I build.
The 280 would be the largest hyd. cam I would run in a sbc. with the removal of zinc from todays oils.
I have customers that run 7.00's in the 1/8 mile out of a sbc. with a hyd. roller cam and some even drive them to the track.
If I am building a max. effort 383 sbc. for the streets the most hp out of a hyd. cam I would even try for is around 1.1 to 1.2 hp per cubic inch.
After that I would look at hyd. roller's or mech. rollers.