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Re: 604 ci Users.
[Re: Tig]
#1112560
11/16/11 08:30 PM
11/16/11 08:30 PM
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Joined: Jan 2003
Posts: 9,983
Frostbitefalls MN (Rocky&Bullw...
gregsdart
master
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master
Joined: Jan 2003
Posts: 9,983
Frostbitefalls MN (Rocky&Bullw...
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At 3830 lbs to go 8.90s consistently, you will need close to a solid 1100 hp. That is a bunch. The smallest head I would even consider would be about the best ported B1Mc out there, or Predators. The weight is just killing you here. If you could shave some weight off the car and get it down 200 to 300 pounds, you can get by with the B1Mc heads most likely and not have to go with the predators, which would probably have to be bought new. A used set of B1Mcs with a good performance history is what I would look for.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: 604 ci Users.
[Re: poppaj]
#1112561
11/17/11 12:22 AM
11/17/11 12:22 AM
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Joined: Jan 2009
Posts: 627
IN
BIG BEAR
mopar
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mopar
Joined: Jan 2009
Posts: 627
IN
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Quote:
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You can run a 4.75 x 4.500 (604) and you can use aluminum rods, they must be the radiused Bill Miller version or equivelent. I have discussed this combo with Scott Koffel. He has built several. poppaj 
 I think its a pretty common combo, mine has GRP rods.
So you guys are saying you can use the 4.75 stroke crank in a standard cam location block, with aluminum rods? I don't think so. My 4.50 stroke needed clearancing on the rods with a standard cam block, 2.325 pin, with GRP's. Even at 2.200 it would only be .125 more clearance.
I am talking a Indy or KB alloy block with stock cam location, NO small baseline cam needed, It is tight but fits.
I can't speak for the other guys but our block will except a 4.75 stroke with a standard cam location. I would assume any other aftermarket block would do the same 
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Re: 604 ci Users.
[Re: BIG BEAR]
#1112567
11/17/11 10:37 PM
11/17/11 10:37 PM
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Joined: Apr 2005
Posts: 2,128
Salt Lake City
camastomcat
top fuel
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top fuel
Joined: Apr 2005
Posts: 2,128
Salt Lake City
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Quote:
How does it run?
At 3500ft corrected altitude in Las Vegas, it ran 7.38@179....so pretty good. It should be slightly faster with a non NOS cam and pistons. It's a dragster at 1850lbs.
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Re: 604 ci Users.
[Re: poppaj]
#1112568
11/17/11 10:42 PM
11/17/11 10:42 PM
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Joined: Apr 2005
Posts: 2,128
Salt Lake City
camastomcat
top fuel
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top fuel
Joined: Apr 2005
Posts: 2,128
Salt Lake City
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Quote:
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I have the World block with the GRP pro series aluminum rods and mopar pin size. I run the 4.500 crankshaft. 4 of the rods need to be clearenced to clear the cam tunnel and pan rail.
Hi Tommy,
With the Miller alloy rods with a standard ground roller in most cases you end up with a hundred thousandths cam to rod clearance. That is with a chevy 2.2 rod journal. It is close and there is block clearancing that must be done. I will say if I were going to build one and did not already have a block I would go for the .250 raised cam block, it just would make things much easier. poppaj
Well, I stand corrected. I called my engine builder this morning and he said it would fit with 2.200 pin, like you and others said. I guess I just wouldn't want to clearance my rods that much. I don't even like clearancing mine for the 4.500 stroke, and we just massage them a little. But thanks for the info, good to know.
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572 with 8.5to one comp and a f-2 procharger = 1400 hp on pump gas at about 14 lbs of boost makes a cool daily driver !! 
