351w crank bolt pattern

[merkurmike]

dose someone know if the bolt pattern on the crank of a 351w changed between years? because i found a 351w out of a 69 galaxy for cheap. want to know if its the same as 80's crank. i know that the 302w's changed so just want to make sure thats all.

[powercar82]

I don't think they changed. They may have changed imbalance though...

[prostang92]

IMBALANCE CHANGED AND THE DAMPNER IS MORE THAN LIKELY A 3 BOLT INSTAD OF A 4 BOLT LIKE THE ROLLER MUSANGS...

CC

[Old Man]

The bolt pattern has not changed. Balance weight changed. The old 351s are 28oz your roller 302s are 50oz.

[Max Power]

The 351 cranks changed from a 3 bolt to a 4 bolt mid-year 1969.

[Old Man]

The 351 cranks changed from a 3 bolt to a 4 bolt mid-year 1969.

That is the balancer on the front not the crank. If you use the right weight, you can interchange all the balancers. You will have to space out your pulley to line up.

[Max Power]

That is the balancer on the front not the crank. If you use the right weight, you can interchange all the balancers. You will have to space out your pulley to line up.

You are correct, my bad.

[merkurmike]

so dose some one know what the imbalance of a 69 351w is?(28once or 50 once)

[merkurmike]

and if i have the right imbalance flywheel it will fit with a t-5 trans.

[Old Man]

so dose some one know what the imbalance of a 69 351w is?(28once or 50 once)

28oz, yes, use a 157 tooth and it will bolt on for a T-5

[merkurmike]

good because thats what i have. just wanted to make sure. thanks

[Old Man]

good because thats what i have. just wanted to make sure. thanks

It will bolt up fine. Be careful the T5 is not built for the Tq of even a mild 351.

[merkurmike]

just droping the motor in and getting it running first. more power later and maybe an efi swap. who knows. we will see. thanks