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Author Topic:   head flow #s
galaxstang
Dirt Roller

Total posts: 6
posted March 18, 2005 10:15 PM  
I am looking for head flow numbers for stock 461 chevy heads. Can anyone help?

Thanks

chomme
Dirt Freak

Total posts: 300
posted March 19, 2005 03:09 PM  
that chart says that an 882 out flows a 441 if thats the case how come no one uses them on a race motor????

racer17j
Dirt Forum Champ
Total posts: 5390
posted March 20, 2005 03:22 PM  
I ran a pure stock class that mandated 882 heads and have not hear of any one cracking one unless they shave the ***** out of them but when limited to 9.0 to one with flat tops you cant take them down very far.. But besides the cracking will they acuttualy out perform a 441????

Speedway65
Dirt Freak

Total posts: 344
posted March 21, 2005 07:15 AM  
We also have a rule that mandates only using 882 heads.With this spec motor rule we also get to run a aluminum 4bbl weiand intake and a 4412 carb,as well as Hoosier 8 inch tires.i would rather get all that then run Street tires and 441 heads!

wrenchnerd
Dirt Roller

Total posts: 16
posted March 27, 2005 04:50 PM  
i was told you also have to keep in mind, every set of heads may flow different, there was 4 or 5 different versions of the 882, i was told the large valve ones are ok except the crack problem, stay away from the factory small valved ones. 993 should flow the same as 882, just a heavier casting.

o5racer
Dirt Freak

Total posts: 402
posted March 27, 2005 08:44 PM  
I find it hard to believe that an 882 flows the same as a 492.
Nick

rico 08
Dirt Forum Champ
Total posts: 1139
posted March 28, 2005 05:29 AM  
If you look the tests are from two different people,one is chp(chevy high performance)and ccm(?)one interesting thing is the 882 heads are listing 420 h.p.(hard to do stock) The 882 has bad intake runners compared to the 441..
one thing i've noticed also is the 882 does flow really good on the exhaust side even with a smaller port.

[This message has been edited by rico 08 (edited March 28, 2005).]

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