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What heads would fit these rules?
#912502
01/24/11 11:05 AM
01/24/11 11:05 AM
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Joined: Nov 2007
Posts: 317
Indiana
79_W200
OP
enthusiast
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OP
enthusiast
Joined: Nov 2007
Posts: 317
Indiana
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This is for a pulling truck, the rules were changed to allow alum heads this year.
Engine must be naturally aspirated. Any single four-barrel carb allowed with any cast aluminum intake manifold, No sheet metal intakes. 470 cubic inch or 58.75 per cylinder. GASOLINE IS RESTRICTED see general rule #37. Cast iron block, any cast iron heads. Aluminum heads that meet the following criteria are allowed.
a.) OEM intake port locations
b.) Accepts OEM production valvetrain
c.) Exhaust ports can only be raised a maximum of 5/8" of an inch.
10. Open exhaust is allowed and must exit down and back, upright headers allowed.
we currently are using 440 c could we run any B1's, if so with cubic in limit how much hp could be gained? Thanks for any input.
1979 W200 470
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Re: What heads would fit these rules?
[Re: 79_W200]
#912503
01/24/11 02:11 PM
01/24/11 02:11 PM
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Joined: Aug 2003
Posts: 43,248
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,248
Bend,OR USA
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The rule on limiting the raised exhaust port may be a factor now on all of the after market race siameze port heads   My B1 have 76 CC chambers, Koffel wanted to make them 51.0 CC, I'm not sure what they measure now or when cut down, call Koffels or E mail them to find out what the 51.0 CC heads measure to the floor of the exhaust ports 
Last edited by Cab_Burge; 01/24/11 11:01 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: What heads would fit these rules?
[Re: 79_W200]
#912506
01/24/11 03:17 PM
01/24/11 03:17 PM
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Joined: Jan 2003
Posts: 75,071
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,071
U.S.S.A.
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Quote:
This is for a pulling truck, the rules were changed to allow alum heads this year.
Engine must be naturally aspirated. Any single four-barrel carb allowed with any cast aluminum intake manifold, No sheet metal intakes. 470 cubic inch or 58.75 per cylinder. GASOLINE IS RESTRICTED see general rule #37. Cast iron block, any cast iron heads. Aluminum heads that meet the following criteria are allowed.
a.) OEM intake port locations
b.) Accepts OEM production valvetrain
c.) Exhaust ports can only be raised a maximum of 5/8" of an inch.
10. Open exhaust is allowed and must exit down and back, upright headers allowed.
we currently are using 440 c could we run any B1's, if so with cubic in limit how much hp could be gained? Thanks for any input.
No you can't use the B1 , they don't have standard port location OR use stock valvetrain
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Re: What heads would fit these rules?
[Re: JohnRR]
#912507
01/24/11 10:30 PM
01/24/11 10:30 PM
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Joined: Nov 2007
Posts: 317
Indiana
79_W200
OP
enthusiast
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OP
enthusiast
Joined: Nov 2007
Posts: 317
Indiana
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i agree -1 are not stock valve train but they have been alowed im running -1c now i will guess i will have to talk to Koffels probably be ok unless we beat somebody im not sure what heads the other brands are trying to get seems that most have these changes
1979 W200 470
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Re: What heads would fit these rules?
[Re: Diablo]
#912509
01/25/11 10:44 PM
01/25/11 10:44 PM
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Joined: Nov 2007
Posts: 317
Indiana
79_W200
OP
enthusiast
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OP
enthusiast
Joined: Nov 2007
Posts: 317
Indiana
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i am running a 400 block still, my combo made almost 750 with the -1c There are no other dodges in the class so all rules were set around Ford and Chevy heads i think they were trying to keep out the ex514 ford not sure what it keeps out on chevy. How much is the B1 raised as these are what i would like to build a combo for if i can run them
1979 W200 470
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