F4TE Block + 4.25" Stroker Crank?

[tjm73]

Anyone put a 4.25" stroker crank in a factory block? Will it fit?

Particularly, I'm curious about clearing the pan rails, the oil pump pick up tube and the cam journal area. I know the bottoms of the cylinder bores would need clearencing.

 

[Rick 91GT]

I don't think that will fit, what rod will you use?

 

[Numbles]

Seems to me you should look for a 351 block to fit that typr of crank it. Could be wrong.

 

[Daniel50]

I don't think that will fit, what rod will you use?

not sure on the fitment either since never really heard anyone using it. only one way to find out though

 

[tjm73]

I don't think that will fit, what rod will you use?

If it were to be built it would be a 6.200" rod.

My brother has a F4TE block with a 4.10" stroker crank with 6.200" rods in it, so I know that will fit.

 

[bjl95mustang]

Search on www.hardcore50.com . The owner of chp postes on there plus alot of engine builders.There has been some talk about the 4.25 cranks in there. You have to worry more about the rod design with the cam than the stroke. My eagle rods are made for a stroker the the cap screws are place so they wont hit the cam.

When I did my 95 roller block and a 4.1 crank I had grind the piston bore a bit and I had to grind a casting mount next to the oil pump, thats it. Get a set of cheap bearings drop the crank in, then sharpie the areas that it hits. Grind then wash you block.

 

[tjm73]

Search on www.hardcore50.com . The owner of chp postes on there plus alot of engine builders.There has been some talk about the 4.25 cranks in there. You have to worry more about the rod design with the cam than the stroke. My eagle rods are made for a stroker the the cap screws are place so they wont hit the cam.

When I did my 95 roller block and a 4.1 crank I had grind the piston bore a bit and I had to grind a casting mount next to the oil pump, thats it. Get a set of cheap bearings drop the crank in, then sharpie the areas that it hits. Grind then wash you block.

That is exactly what my brother did with his 4.10" stroke 418W.

 

[Rick 91GT]

That is why I asked what rod you plan to run, that has a huge impact along with the cam, (roller bearing, standard, core size).

I've done the 4.1" just like above.