390 to 428 stroker?
Are you talkin FE engines? If so, some 390's can be made into 428's, but not all. The 390 has a 4.05'' bore and a 3.78'' stroke. The 428 is a 4.13'' bore and a 3.98 stroke.
If you wanna upgrade to more cubes, you actually have 3 options.
First being a 410, which can be made from any 390. Uses the same 4.05 bore, but uses the 428's 3.98 stroke.
The second is a 406. Thats where if you have a block that is capable of being bored to the 4.13 of the 428 piston but still uses the 390 crank. 406 was the predesessor to the 427, and was available in 63 galaxies as a factory tri-power. Awesome cars to see one fixed up.
Anyhow... The final step is of course the 428. you will need to bore your block .080 over, and locate a 428 crank. To see if your block is able to take the bore, you need to look for a casting mark below the driver side cylinder head on the front of the motor that is a mirror image of a 105. That indicates it was cast as an FT (ford truck) block, and as such, has more meat in the cyl. walls, and also has the extra main webbing found in the 428 blocks.
If you don't have that block, and are close to vegas, or dont mind the shipping, I have 5 of em. Gimme a shout!
74 F-350 460 4 speed OD
71 Stang 351c 4 speed OD soon to be a 460 beast
70 Torino Conv. N code 429
[ This Message was edited by: Luv70sFords on 8/1/02 1:14pm ]