iburyshoes

Is the bore of a stock 302 4.000"? I want to swap my stock 302 with a Dart IE block. The Dart is available in 4.000 or 4.125" bores. Any advice?

schwindty

The 4.000 is the standard Bore if you want a stroker or any sort you have to get it bored .030 over making is 4.030 Stock block bore is the 4.0

iburyshoes

thanks schwindty.

i'm assuming that i use 4.000" bore pistons with a stock block. is that right?

schwindty

Thats right dude, if you want to make a 306 then you get it bored .030 and use the stock 5.009 rods. Over and if you want it stroked to a 331 you use a 3.250 Crank with 5.4 Rod to get a 347 you use a 3.400 Crank with 5.4 rods and a 4.030 bore.

Tims 88GT

i think most of the time when you buy a block it is underbored so you can make it what you want.

iburyshoes

thanks again for the help.

88BlueGT

Yea, Im pretty sure that it usually is too.