Pulled the engine, need some advice...

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Oct 28, 2011 | 01:36 PM

#16

JLaw92

New User

Joined: Oct 2011

Posts: 6

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Thanks for the information, I planned on just getting ones out of a junkyard to play around with but when I go to get ones for the engine I'm building then I'll buy new ones. I got another question that may not make any sense but I've wondered it. Could I use chevy rockers with a larger cam? or would that push the valves to far down and hit the piston?

Oct 28, 2011 | 02:18 PM

#17

F-250 restorer

Lead Driver

Joined: Mar 2008

Posts: 7,192

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From: Near Los Angeles

Quote:

Originally Posted by JLaw92

I don't think that would be an issue with a 300. Most pistons are dish. Of course it is always best to check clearance. I used 1.7 roller bbc rockers with cam that gave me .450" lift, thereby producing, IIRC, .483 lift. I guess it was when I sucked a valve my opinion of the c. rockers changed (unbelievably, the valve just hung there, without dropping into the chamber, even though it happened at freeway speed), but then I had a lot going on with my v.geometry: longer valves, Isky double springs with 134 lbs seat pressure, milled head, longer p.rods too. Adapt a carpenters saying when building an engine: "Measure twice, install once."

There are cams out there to give you any lift you want, or you can have one custom ground. Make a plan, with a goal in mind, and stick to it, using your goal to determine what parts you buy. And keep ego out of the equation, lol.

Oct 28, 2011 | 04:19 PM

#18

Davidwent

Senior User

Joined: Jun 2011

Posts: 144

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ALWAYS replaced: pistons, rings, bearings, cam, lifters, oil pump, wtr pump, p.rods and rockers.

Hey F-250, when you mention pistons, are rods and wrist pins included or should they be ok to re-use?
TIA
David