Hello all. How far can you take out a standard 304 crank?is it possible to get it to 350 or do rods,pistons etc play a big part.

You have to use 308 crank standard to offset grind.

And can you get it out so the stroke is 3.54?

No, offset ground crankshaft using small journal chev rods normally are around 330 ci, depending on bore over size

For what it will cost to grind the crank , chase up the small journal rods & pistons , machine work and balancing , you're best off just going for a 355 . I looked into this when I was putting one together for mine , went with a Scat stroker set up instead .

Cheers guys.was just asking because i droped the sump off and couldnt find the harrop logo on my crank.i know 100% that it has a 3.54 inch stroke but thought it may have had an offset ground crank.will turn donk back over tommorow and rotate crank and try find the harrop logo. Cheers.

Are the heads on it?

Nah i pulled one off yesterday thats how i measured the stroke.but i already knew it had a 90mm stroke.

the holden factory strokers don't run the harrop logo

cheers b/wagon yeah correct.i was not 100% sure but a potential buyer had convinced me that they had a harrop logo.but i had then found out elsewhere that was not the case. going to refit cyl head oil up motor,glad wrap it and put it away.

The factory stroker and most 355 strokers have a 3.48 stroke .