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Re: HP limit for 440 Block, filled & alum caps [Re: Efidart] #186633
01/07/09 09:55 PM
01/07/09 09:55 PM
Joined: Jan 2005
Posts: 1,260
Las Vegas NV
moparmanjames Offline OP
pro stock
moparmanjames  Offline OP
pro stock

Joined: Jan 2005
Posts: 1,260
Las Vegas NV
Quote:

Did 985RWHP on a short filled, aluminum capped and girdled destroked 440 turbo'd 388 cube. Mains looked like new after a year of beating on it.

Then I wised up bought a KB block and made more power on less boost with some more cubes.




Thanks for the info

Re: HP limit for 440 Block, filled & alum caps [Re: 440Jim] #186634
01/07/09 10:05 PM
01/07/09 10:05 PM
Joined: Jan 2005
Posts: 1,260
Las Vegas NV
moparmanjames Offline OP
pro stock
moparmanjames  Offline OP
pro stock

Joined: Jan 2005
Posts: 1,260
Las Vegas NV
My block supposedly has been sonic checked and was in a naturally aspirated 505 alky digger.
It's .030 over so I was going to take it .060 and hope for the best, but I'd really like to come across a deal on an aftermarket block.
Thanks for the info.

Re: HP limit for 440 Block, filled & alum caps [Re: moparmanjames] #186635
01/07/09 10:33 PM
01/07/09 10:33 PM
Joined: Nov 2005
Posts: 210
mass,usa
sickhemi Offline
enthusiast
sickhemi  Offline
enthusiast

Joined: Nov 2005
Posts: 210
mass,usa
didn't all the cylinder splitting happen recently with the long stroke cranks and short skirt pistons loading the cylinder walls or do they also split with stock stroke cranks?


1968 gts 355 r3 six speed efi with irs in progress and 1969 convt 440 stage 6 efi 5spd dana
Re: HP limit for 440 Block, filled & alum caps [Re: sickhemi] #186636
01/08/09 01:51 AM
01/08/09 01:51 AM
Joined: Feb 2004
Posts: 391
Santa Rosa,CA USA
67dodgeracer Offline
enthusiast
67dodgeracer  Offline
enthusiast

Joined: Feb 2004
Posts: 391
Santa Rosa,CA USA
Following up on 440Jims thoughts,what is the generally accepted minimum cylinder wall thickness,using a half fill?

Re: HP limit for 440 Block, filled & alum caps [Re: sickhemi] #186637
01/08/09 03:13 AM
01/08/09 03:13 AM
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
C
Cab_Burge Offline
I Win
Cab_Burge  Offline
I Win
C

Joined: Aug 2003
Posts: 43,007
Bend,OR USA
Quote:

didn't all the cylinder splitting happen recently with the long stroke cranks and short skirt pistons loading the cylinder walls or do they also split with stock stroke cranks?


I have seen several 400 blocks with 3.75 strokers split the cylinders with 6.76 long rods. My 1976 400 block with 6.8 long rods and a 4.300 stroker hasn't split one yet, thinness spot sonic testing in any of the cylinders was .163, thickess was .230 after boring I have seen thinner and thicker stock blocks As already said you have to test a bunch of them to find a really good one, that is the reason I bought one of the new World wedge blocks at 4.500 bore I have sonic tested it on the thrust sides,it is siamese bore, and the thinness I found was .300 That rascal is heavy though


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: HP limit for 440 Block, filled & alum caps [Re: moparmanjames] #186638
01/08/09 07:24 AM
01/08/09 07:24 AM
Joined: Jul 2005
Posts: 8,647
ELYRIA,OH
B
blownzoom440 Offline
blownzoom440  Offline
B

Joined: Jul 2005
Posts: 8,647
ELYRIA,OH
Quote:

My block supposedly has been sonic checked and was in a naturally aspirated 505 alky digger.
It's .030 over so I was going to take it .060 and hope for the best, but I'd really like to come across a deal on an aftermarket block.
Thanks for the info.



do you have to take it to .060 or will it cleanup at .040?[keeping cylinder wall as thick as can be.]as $$ permits i would like to find a better block also a KP440 or KB aluminum.

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