sbc drag racing engine...

Old 04-09-2012, 06:35 PM
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mwbrasher
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Default sbc drag racing engine...

my question is this... i have the chance to build a race only engine for my 3000 lb... race ready vega...should i go with the... 383.... or 377... or 406... i have a good 400... 509 2 bolt block... it needs to turn 7200 at the lights.... any help would be great... thanks in advance.........caveman... :?
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Old 04-09-2012, 08:47 PM
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zipper06
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Go with the 406" i've got a 377" in 3250 lbs and it has no torque for that much weight, even on alcohol. i had a 406 on gas in the car and ran better and quicker 60' times. But i broke it because i didn't have good rod bolts in the pink rods (boke a rod bolt)
The 377' in my car is a 2 bolt, and the 406" was a 4 bolt blk. Luckly it didn't kill the 4 bolt block and i still have it
JMO

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Old 04-10-2012, 09:55 AM
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coolracing
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Originally Posted by zipper06
Go with the 406"

Zip.
X2
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Old 04-10-2012, 11:37 AM
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mwbrasher
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hey guys... thanks for the quick responce... i was leaning towards the 406... but do you think it san stand 7200 rpm... i'm running a 32 inch tall tire turbo 350.. bo brake and 5;13 gears ... thanks caveman.......
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Old 04-10-2012, 12:31 PM
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TheEngineer
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There's no replacement for displacement, so a SBC with 400+ CIs is the way to go! Additionally, I believe a broad power-band in a car like your's (typically with a Power-Glide) is also very important. So, a 4" stroke crank will help with that.

FYI, my SBC 427 stroker with 4" crank will easly turn 7500, but I typically shift it at 7200 bracket racing.
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Old 04-10-2012, 12:39 PM
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Originally Posted by TheEngineer
There's no replacement for displacement, so a SBC with 400+ CIs is the way to go! Additionally, I believe a broad power-band in a car like your's (but typically with a Power-Glide) is also very important. So, a 4" stroke crank will help with that.

FYI, my SBC 427 stroker with 4" crank will easly turn 7500, but I typically shift it at 7200 bracket racing.
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Old 04-10-2012, 01:04 PM
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coolracing
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Originally Posted by TheEngineer
There's no replacement for displacement
You know it!
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Old 04-11-2012, 03:41 PM
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hotrod1994
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406
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Old 04-12-2012, 09:16 PM
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mwbrasher
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ok... what compression would you run?? dome or flat top?on 383 or 406? thanks in advance.... caveman :? :? :?
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Old 04-14-2012, 09:18 AM
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id run a dome with around 13-14:1 if it just gonna be a race car id run some afr heads as well
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