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06-14-2010, 01:15 PM #1
- Join Date
- Jun 2010
i have a 350sb and a spare 400sb camshaft, and a set of 383 heads on the way, how far will i need to bore the pistons out and any good advice on a piston that will suit this. This engine will be for a 4x4 truck that will be abused on a weekly basis.
06-14-2010, 01:44 PM #2
I wouldnt bore it unless needed, Stroke it! You dont want to have high compression either so you can run regular gas.Everyday I wake up is a great day! ;-)
05' Chevy Suburban, 11' Ford Fiesta
06-15-2010, 09:16 AM #3
06-18-2010, 11:49 AM #4
- Join Date
- May 2010
- Central IL
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As they said leave bore alone unless it needs it for wear. if you're going to be pushing the engine hard, you want as thick of cylinder walls as possible to take the load.
As far as pistons, any good aftermarket piston will work, just make sure it's for a 383 setup (uses different pin positioning because of the 400 crank's stroke), and like k.daddy said 9.5:1 is a good compression to stay with. Keep in mind that the compression specs are based on cylinder head chamber size, so if you're new heads have small chambers, make sure you're looking at the right numbers on the pistons.
Last edited by dualdj1; 06-18-2010 at 11:51 AM.1986 Chevy G20 Tow Rig - 5.7 TBI conversion
1978 Mustang II King Cobra Road Racer - Holley 650, MSD 6AL, 5 speed, 10 point Roll Cage, 9" posi, fuel cell, custom interior.
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