351 R block

[venmus]

i have a 351 R block...9.2 deck height, 4-bolt on 2,3,4 mains, and bored .030 over...frpp says these blocks can only be bored .030...how many people have seen these bored larger... .040????maybe...it is a non-siamese bore block also

 

[Euphoric306]

i dunno wut a 351r block is... maybe a ricer mustang type r?

 

[Camman]

frpp generally knows what they are talking about. I cant be of any help as I have never seen a 351r block.

 

[thumper460]

The W block can go .040 with ease.. we have run .060 over with 9.5:1 comp and NO problems.. Usually the Mfg is real conservative !! but thru experiance.. .040 is good and .060 if you need too!! cool??

Just me...........................

Thumper

 

[venmus]

this is the M351...but i'm still thinking .040 will work...i just may call frpp to be sure

 

[Rick 91GT]

.040 will be fine on that block I have the same thing for my car, half filled with Harblok also. You can sleeve it down if you need to. I know builders who have taken them out to 4.080 with no issues.

It has a 2.74" main also... Cleveland style.

 

[venmus]

you have the same block i am talking about? M-6010-M351...if so i'd like to talk to you mor ein depth about it