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Re: big block head??
[Re: kams]
#230121
02/19/09 11:22 PM
02/19/09 11:22 PM
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Joined: Aug 2003
Posts: 43,293
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,293
Bend,OR USA
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The 906 usually will outflow the 452 by a small amount, the valve seast are real important on all BB wedge heads, pick the set with the best seats   BYW, the 452 had hard seats in them from the factory for unleaded gasoline and the 906 castings did not 
Last edited by Cab_Burge; 02/19/09 11:23 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: big block head??
[Re: kams]
#230122
02/19/09 11:23 PM
02/19/09 11:23 PM
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Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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The port/valve size is pretty much the same & I have never seen a set of(stock) 906's that were cracked unlike(a few)of the induction hardened seat 452's. If the 906's were ported by some one who knew what they were doing & another plus would be if hardened (ex) seats were added when they were ported.
live every 24 hour block of time like it's your last day on earth
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Re: big block head??
[Re: kams]
#230124
02/20/09 09:49 AM
02/20/09 09:49 AM
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Joined: Jan 2003
Posts: 75,092
A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,092
A Banana Republic near you.
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Quote:
what jeads shold I use 452 or 906 I have a pair of each, the 906 look like they have been ported or gasket matched.
thansk for any input
Are these going on the stroker you are thinking about ? If so you should have them flowed to see how good, or bad, they are as they will be the limiting factor on a big cube engine .
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