timeing chain
Post Fiend
Joined: Feb 2001
Posts: 6,624
Likes: 8
From: Missouri
With a bigger cam and higher compression pistons it can definitely happen. I'm not sure about the stock truck 390s but it is likely that they can touch if it were slipped to just the right position.
Lead Driver
Joined: Apr 2001
Posts: 6,175
Likes: 21
From: Texas
Brain lapse...
Sean's right. I guess if you're far enough off on the cam to crank timing, there could be valve to piston clearance issues. Especially for high lift cams and high compression pistons.
I wonder if any cam/crank timing position would result in clearance issues on a stock truck FE motor? They are low compression with valve reliefs in the pistons.
Sean's right. I guess if you're far enough off on the cam to crank timing, there could be valve to piston clearance issues. Especially for high lift cams and high compression pistons.
I wonder if any cam/crank timing position would result in clearance issues on a stock truck FE motor? They are low compression with valve reliefs in the pistons.
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