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9 Posts
The 4.0 v6What's in the Ranger now?
I wanna up the power of the 289 but not a lot so I don’t destroy my trans. The truck will be a daily. And the 289 has been setting for 30ish years in a cj5. Also I was going to try use rods of 289.If you're planning on installing the crank rods and pistons from the 302 into the 289 block without new pistons and boring the block, it's not a good idea. With the 289 having a shorter stroke than the 302 its likely you will have broken rings very quickly. The ring ridge will be in the incorrect location. Why do you want to use the 289 block?
Little as possibleHow much do you want to put into this 289/302 build.
Speed costs money.Little as possible
Ok sounds good. Thank you289 was a crab setup with timing marks on pass side, along with WP inlet. 86 is EFI with all that stuff on the other side.
Since money is the deciding factor, use the 289 block, take the 302 crank, rods, get new .030"+ pistons and have it bored/honed for the new pistons, new rod/main/cam bearings, wont have to re-balance, valve job, and use the timing cover/WP/flywheel/damper, acc stuff form the 86 and live happily ever after.