451 BUILD RECOMENDATIONS

[Rick Carson]

HEY GUYS! THIN KING ON BUILDING A 451 FOR MY 62 DART.
HAVE A 72 400 BLOCK{VIRGIN}
CAN GET GOOD DEAL ON KB 25130 PISTONS WHICH USE THE 400 RODS
GOT A GOOD 440 STEEL CRANK,ALREADY 030 ON THE MAINS ANYWAY
SHOULD I SEND THE CRANK IN TO BE CUT?
NEVER DONE ONE BEFORE,IS THERE MUCH CLEARANCING TO BE DONE ON THE BLOCK?
ANY ADVICE WOULD BE APPRECIATED.

 

[mentor70]

you will need the crank cut by a shop that has done it before. my buddy did one a few years ago, he sent it to Hughes engines, they prepped the crank and sent it back. i think you may need to use BB chevy rods to make this work, but im not 100% sure, thats how my friends engine was set up. there will need to be some clearencing of the block for sure, its not a big deal.

 

[khryslerkid]

WHY ARE YOU YELLING RICK?

 

[Rick Carson]

sorry,.. cap locks off now, didn't even notice.

 

[IQ52]

Start here.................

http://arengineering.com/tech/451-manifesto/

 

[72Fourspeed]

The bb chevy rods are for the 468 & up motors when you use a 440 crank.

 

[64SF]

Check these out then you can use 440 rods. They also have .030 over.

http://www.cnc-motorsports.com/keith-black-kb280-020-hypereutectic-dome-pistons-4-362-bore.html

 

[Rick Carson]

Using the stock 400 length rods and the kb251030 pistons will stil give you a 1.695 rod ratio which is still pretty respectable I think,compared to a chevy small block

 

[72Fourspeed]

Check these out then you can use 440 rods. They also have .030 over.

http://www.cnc-motorsports.com/keith-black-kb280-020-hypereutectic-dome-pistons-4-362-bore.html

11.6 to 1 ? Will that run on 91 octane ?

 

[Rick Carson]

With those pistons havin a quench pad that can be machined,you can get it under 11.0,and with the right cam shaft it will live fine on the 91....I hope