Thread: Jegs crate motor choices vs. local rebuilder

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Deuce4dad - I was kinda thinking that a 400 hp build may not be what I need - i'm reusing the stock 4 speed trans and rearend, and figure they may not last long with that kind of power, plus, I'm not sure how streetable that engine would be. Thanks for the explanation about flat tappet cam. Is the problem with the flat tappet that if it's not broken in correctly, the cam will shed metal particles into the engine? What is the correct way to break in a 350 sbc? I've never had a new motor!

prpmmp - i'm going back and forth on the motor. I don't want a junkyard motor, since I might be driving this motor for 5+ years, which is originally why I was looking at the $800 rebuild or the $1450 jegs or summit motor - just keep it stock and drive it for awhile. I may still go that route, but really like the info and ideas I'm getting on this forum.

rspears - I really like your idea of asking the local rebuilder about a custom 350 Gen 1 SBC with a roller cam. I'll definitely contact them about this.

Originally Posted by hpcbmw

Deuce4dad - Is the problem with the flat tappet that if it's not broken in correctly, the cam will shed metal particles into the engine? What is the correct way to break in a 350 sbc? I've never had a new motor!

This tutorial that I wrote for the Crankshaft Coalition wiki should explain all the pitfalls of running a flat tappet cam....
http://www.crankshaftcoalition.com/w...ips_and_tricks

If I were in your position, I'd look for an L31 engine complete from a wreck. Here's a wiki article that includes all the cars and SUV's that used that motor. It's a Gen I motor with Vortec iron heads and will make a good foundation for a truck motor for the street, factory roller cam and all. Use a high-rise, dual-plane intake manifold such as the Edelbrock 7116 and carburetor of your choice.
http://www.crankshaftcoalition.com/w..._cylinder_head

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