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516 vs 906 on a six pack

Started by rt green, January 11, 2015, 12:04:36 PM

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rt green

January 11, 2015, 12:04:36 PM
would a set of 516 heads with the big valves and a 75 degree throat cut be better than a set of 906 stock heads? new engine.
third string oil changer

BSB67

#1
January 11, 2015, 02:37:10 PM
The 906 head will still out flow the 516.  The 516 will give a bump in CR.  Depending on the specifics of your build, one might be a better choice than the other.

500" NA, Eddy head, pump gas, exhaust manifold with 2 1/2 exhaust with tailpipes
4150 lbs with driver, 3.23 gear, stock converter
11.68 @ 120.2 mph

Ghoste

#2
January 11, 2015, 04:03:02 PM
Andf if either one needs a bunch of work you might want to take a serious look at Edelbrocks.

Cooter

#3
January 11, 2015, 10:58:22 PM
Or Stealth.
" I have spent thousands of dollars and countless hours researching what works and what doesn't and I'm willing to share"

Challenger340

#4
January 12, 2015, 08:04:55 AM
Quote from: Cooter on January 11, 2015, 10:58:22 PM
Or Stealth.

Stealths seem to be improving literally "quarterly" ?

Last few sets we brought in, had the prior castings longside Bowl Radius flaw FIXED ootb, really good now in fact !

That guy must be chin-wagg'in with the chinese foundry on an ongoing basis !
Only wimps wear Bowties !
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