I just rebuilt a 1988 truck 350 with the stock crank for my 69 camaro. When i went to buy a flywheel it looks like it has a weight on it. Were late 80's externally balanced motor? Also what about the harmonic balancer. Are there performance ones for this motor?

350' are all internally balanced. only the 400 is externally balanced. 8 inch balancer is best but get the matching timing tab because there are differences.

I think they were externally balanced. All SB engines with the one piece rear seal had external balance. I saw one out of a Camaro in my engine builders shop that was that way.
David

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Check my web page for First Gen Camaro suspension info:
David's Motorsports page (http://ourworld.compuserve.com/homepages/David_Pozzi/)
First Gen Suspension Page (http://ourworld.compuserve.com/homepages/David_Pozzi/first_gen_suspension.htm)
67 RS 327
69 Camaro Vintage Racer
65 Lola T-70 Chev 350 Can-Am Vintage Racer

All pre-1986 350's are internally balanced; 1986 and later 350's with the one-piece rear seal and 3" dia. flywheel bolt pattern are only "partially" internally balanced - they use an ordinary neutral balancer, but they require a weighted flywheel or flexplate. Neutral at the front, weighted at the rear.

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JohnZ
'69 Z28 Fathom Green

So that means I can use a damper for an internally balanced motor. Now should I stay with the stock one or go for a performance one? The motor should make some good power but I don't think I'll be going past 5,800 RPM

[This message has been edited by pseudosport (edited 12-13-2001).]

I found out the stock one has an 8 inch diameter and goes for about $70. What should I go with?

Street motor below 5800 RPM's...Don't waste your cash on an aftermarket piece.