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Author Topic:   SBC Block Questions
JCSimpson
Dirt Newbie

Total posts: 3
posted August 20, 2005 11:06 AM  
I have been offered a bare SBC block (cast# 366245)for free. The Block was cracked at the freeze plug on the left side but has been welded and driven on the street for 2 years without leaking. It is a 355 (350 bored .030 over). My question is with this block being previously cracked would it be worth building from my purestock or be a guarenteed failure? I run a high banked 3/8 clay oval and currently am turning about 7200RPM with a sbc 305 and a 6.08 overall gear.

Eljojo
Dirt Forum Champ
Total posts: 968
posted August 20, 2005 11:25 AM  
Go for it. If the block fails and cracks, pull your rotating assy. and build another mill. What have you lost?

Eljojo
Dirt Forum Champ
Total posts: 968
posted August 20, 2005 11:27 AM  
How in the heck are you turning that kind of rpm's with a 6.08 on a quarter mile?

JCSimpson
Dirt Newbie

Total posts: 3
posted August 20, 2005 11:42 AM  
I turn 7200 RPM because
1. it's 3/8 mile not 1/4
2. I have a good enough suspension setup that I never let off the gas in the turn with my weak 305
3. at our track the high groove is generally the faster line so you carry more RPM this also prevents my weak motor bogging down coming out of the corner

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