here we go again... does anyone make 3 7/8

[tubman]

I don't really like to get into this again, but when you consider what's involved, it looks like a "no-brainer" to me. The early rod journals are 1.990", while the 8BA's are 2.139". It looks to me that if the proper offset grind were performed on the crankshaft, a 3 7/8 stroker with standard Ford pistons would be a natural. Do the math.

[Walt Dupont--Me.]

Originally Posted by tubman

I don't really like to get into this again, but when you consider what's involved, it looks like a "no-brainer" to me. The early rod journals are 1.990", while the 8BA's are 2.139". It looks to me that if the proper offset grind were performed on the crankshaft, a 3 7/8 stroker with standard Ford pistons would be a natural. Do the math.

I don't get, how can you use 3-3/4 pistons with a 3-7/8 stroke with out the pistons sticking out a 1/16? and use a 7in. rod. Walt

[Pete]

Originally Posted by Walt Dupont--Me.

I don't get, how can you use 3-3/4 pistons with a 3-7/8 stroke with out the pistons sticking out a 1/16? and use a 7in. rod. Walt

In the old days, most pistons as ordered, did not come to the top of the block (deck) by varying ammounts.
It was common to use 4 1/8 pistons with a 4 1/4 crank.
The edge of the piston was then flush with the deck.
The heads were cut to fit.
Today you should always specify when ordering special pistons that they come flush to the deck. You could end up shy on compression otherwise.