69 block in 351w has more nickle content.
That makes it stronger
That makes it stronger
351w specs ?
Im loking to build a 351w looking to see if year of the block has different specs and what years to look for then?
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'69-'74 model blocks are the strongest factory blocks. They have higher nickel content, and I believe the main webbing is thicker in general.
I think the '69 era 351W blocks had a 9.2" deck height instead of 9.5"
I've been messing around with the '95 era 351's with the roller lifter bores.
I've been messing around with the '95 era 351's with the roller lifter bores.
Close, you are thinking of 69 and 70 blocks which had a 9.480" deck height while later blocks had a 9.500" deck height.I think the '69 era 351W blocks had a 9.2" deck height instead of 9.5"
I've been messing around with the '95 era 351's with the roller lifter bores.
They do make a 9.2" deck FMS block.
Oh yeah, that's right! I knew they were a little off...Thanks! 
Short deck thru 70 , high nickel thru 74 . The only down side is the 2 pc rear main . When you get your kit make sure the crank will work in your block . Some stroker cranks are set up for 2 pc rear main and have a ridge that will need to be machined off if used in a later (79 up) 1 pc rear main block . Its nice to have an early strong block but with the power any 351 block can handle you will be fine . If you are going that crazy just get one of the new Ford Boss 351 blocks they just reliesed .Close, you are thinking of 69 and 70 blocks which had a 9.480" deck height while later blocks had a 9.500" deck height.
They do make a 9.2" deck FMS block.
Excellent point about the rear main.
I have a 69 block for sale pm me.
Always fun when you find out after the fact . Been there , done that .Excellent point about the rear main.
depends on what your plans are for it
Their all stronger than a 302 production block, most 351w's never have block problems no matter what year. Brooks bent 8 rods in his roller block, I bought it and am using it on a blown alcohol motor for the last 3 years.Im loking to build a 351w looking to see if year of the block has different specs and what years to look for then?
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