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Can pick up a KB 4.84 borespace block cheap #2866156
12/29/20 05:58 PM
12/29/20 05:58 PM
Joined: Dec 2012
Posts: 1,612
Wind Gap,Pa.
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Sammy Offline OP
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Sammy  Offline OP
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Wind Gap,Pa.
Do you need a special crankshaft for a spreadbore block?
Might pull the trigger on this block. It was never hurt.
1st time going big block.

Re: Can pick up a KB 4.84 borespace block cheap [Re: Sammy] #2866243
12/29/20 09:17 PM
12/29/20 09:17 PM
Joined: Aug 2003
Posts: 36,536
Bend,OR USA
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Cab_Burge Online work
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Cab_Burge  Online Work
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Bend,OR USA
Originally Posted by Sammy
Do you need a special crankshaft for a spreadbore block?
Might pull the trigger on this block. It was never hurt.
1st time going big block.
Think about what they had to do to move the cylinder wall centers shruggy
Better yet call the company that cast that block twocents
I'm trying to remember when and which version Mopar racing block came with the 4.84 bore spacing, I'm thinking around when Darrel Alderman started driving for Mopar and those blocks had the distributor in the rear like BB Chevy blocks do, special block, special heads and so on work
I can't remember the names of those heads either whiney


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Can pick up a KB 4.84 borespace block cheap [Re: Cab_Burge] #2866256
12/29/20 09:45 PM
12/29/20 09:45 PM
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NY
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B1duster Offline
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NY
Indy 600-13 heads, B1TS heads, Predator, had 4.84 versions I think, there may be more. Dodge pro stock heads ?

Re: Can pick up a KB 4.84 borespace block cheap [Re: B1duster] #2866333
12/30/20 07:40 AM
12/30/20 07:40 AM
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n20mstr Offline
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yes needs indy 600-13 or heads designed for that bores space. the motor will make some serious power so , not sure what you have now but more may need to be upgraded in the car. Even if you end up not using it, it can be flipped. For good info, call Chuck at Best Machine. They have built a few of these 4.84 bore spaced engines and im sure he could fill you in. You can build big cubes as that block can go 4.60 bore


....BAD A$$ STREET CAR.....
Re: Can pick up a KB 4.84 borespace block cheap [Re: n20mstr] #2866340
12/30/20 08:11 AM
12/30/20 08:11 AM
Joined: Dec 2012
Posts: 1,612
Wind Gap,Pa.
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Sammy Offline OP
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Sammy  Offline OP
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I'm asking if the crank is a special design for a 4.84 bore space.

Re: Can pick up a KB 4.84 borespace block cheap [Re: Sammy] #2866343
12/30/20 08:21 AM
12/30/20 08:21 AM
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Posts: 3,936
On the bumper
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n20mstr Offline
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Originally Posted by Sammy
I'm asking if the crank is a special design for a 4.84 bore space.


That im not sure of. Chuck at Best Machine would know, also maybe Sasquatch on here would know as he is a dealer for KB,


....BAD A$$ STREET CAR.....
Re: Can pick up a KB 4.84 borespace block cheap [Re: Sammy] #2866402
12/30/20 10:36 AM
12/30/20 10:36 AM
Joined: Dec 2013
Posts: 353
Romulus, MI
GTS340 Offline
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Posts: 353
Romulus, MI
Originally Posted by Sammy
I'm asking if the crank is a special design for a 4.84 bore space.


You could but it isn't necessary. Custom pistons with an opening between the pin bosses to accommodate the offset small end of the rod, or run the rods with enough side clearance to accommodate the offset.
I'm sure someone will chime in saying excessive side clearance will kill oil pressure, which is entirely untrue

Re: Can pick up a KB 4.84 borespace block cheap [Re: GTS340] #2866550
12/30/20 02:34 PM
12/30/20 02:34 PM
Joined: Apr 2015
Posts: 6
nebr
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gtscrose Offline
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I have some pistons and GRP rods for a 600-13 combo.
If interested email me.
gtscrose@longlines.com
thanks,
Chuck







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