Thread: Rebuilding My 390

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Steven, there are fellows on here who have built more FE motors than I have and have a better insight as to what works than I do, but I'm gonna jump into the middle of it anyway....

First off, I absolutely know that FFR428 is givin' you the straight skinny on the oil pan. If you don't put some pan under this motor, you're messin' up bigtime.

Secondly, I think you're shootin' for way too much static compression ratio if this is gonna be mainly a street motor runnin' on pump gas, particularly with iron heads. As you move the c.r. up, you also have to go wilder on the cam to match the c.r. to the intake closing point in order to bleed off some of the cylinder pressure so the motor doesn't rattle like a can of rocks on premium pump gas.

With a 0.030" overbore, 74 cc heads, a Fel-Pro #1020 10 cc head gasket and the L2291F30 pistons from TRW (10 cc valve reliefs) and zero deck, you'll be at 9.6:1, a God's plenty for a street motor. Zero decking the block and using the 0.041" compressed gasket will help the motor tolerate pump gas at 9.6 due to the squish. You might look for a cam along these lines, but heed the warning from FFR428 about the lift limit for non-adj. rockers. This cam has a ton of lift on the exhaust.
http://www.cranecams.com/?show=brows...tType=camshaft

You've got the best head porter on the planet right there in Paso Robles. Ever hear of Mondello heads? Joe has been porting heads since I was poopin' green.
http://www.mondellotwister.com/