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  #1  
Old Jul 16th, 20, 10:31 AM
jimheffern jimheffern is offline
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Default 427 block

looking for a 427 block needs to be in rebuild condition
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  #2  
Old Jul 16th, 20, 11:27 AM
Big Dave Big Dave is offline
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Default Re: 472 block

Recommend a Dart Big M sportsman block. You can buy it with a 4.2500" bore, 4.500" inch bore or a 4.600" bore. Yet it still has 0.300 in. thick cylinder wall even with a with 4.625 in. bore.

Block also uses tall lifter bores to support roller lifters (you can order it with larger than the stock lifter bore diameters to accept bigger diameter Mopar lifters), and it has a dual oil pan bolt pattern for a longer stroke (supports a 4.500 inch stroke). Further it's ductile iron four bolt main caps use splayed bolts (billet steel main caps are an option).

Rotating assembly to go ito the block all costs about the same price, so you can either build a 427 (but someone running a 400 cube SBC will take your lunch money from you if you do); up to a 598 cubic inch BBC that looks like a 427 but has more torque and horsepower at a lower RPM that a hydraulic cam cam support. At a car show the people believe whatever the decal says, and never check casting numbers. While on the street every one assumes you are running a 632 despite what the decal says.

https://www.jegs.com/i/Dart/301/3122...waAsFVEALw_wcB

You will save money in the long run by buying the aftermarket block. If it wasn't more valuable than a stock block they couldn't sell them until every stock block was used up.

Big Dave
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  #3  
Old Jul 16th, 20, 12:26 PM
62 NovaWagon 62 NovaWagon is online now
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Default Re: 472 block

X2 on the Dart, can't go wrong there.
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  #4  
Old Jul 19th, 20, 11:14 AM
jimheffern jimheffern is offline
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Default Re: 427 block

thanks for the info. will all my other short block parts fit in it? heads? parts didn't have 5000 miles on them. I can bore to my piston size, mic the crank etc. another big concern is the bolt holes for P/S alternator brackets etc. trying to stay fairly stock. no roller cam/rockers . thanks a lot !!!! this site has been a life saver for me
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  #5  
Old Jul 19th, 20, 11:43 AM
Big Dave Big Dave is offline
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Default Re: 427 block

Block accepts all factory parts.

Big dave
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  #6  
Old Jul 20th, 20, 02:18 AM
GLHS60 GLHS60 is offline
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Default Re: 427 block

A 454 block is functionally the same and much easier and cheaper to find.

427's were only sold for 4 years in passenger cars so they can be scarce.

454's were mostly sold in trucks and went from 1970 to 1990 in MK IV form.

You probably knew all that jimheffern!!

I just felt like typing for a bit.

Thanks
Randy
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  #7  
Old Jul 20th, 20, 01:22 PM
jimheffern jimheffern is offline
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Default Re: 427 block

lol actually I didn't know thanks
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  #8  
Old Jul 20th, 20, 01:23 PM
jimheffern jimheffern is offline
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Default Re: 427 block

thanks once again Dave
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  #9  
Old Jul 24th, 20, 06:04 AM
Rex Rennie Rex Rennie is offline
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Default Re: 427 block

Thanks for the tip, Dave! I'll keep that in mind.
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