F399

Just wondering if it is possible to run chev 6inch rods on 351C crank using custom pistons. If possible what has to be done?
Just asking because i have noticed Chev H beam rods are way cheaper then the cleveland ones

LTD351T

You wouldn't bother running the stock C crank, you can get eagle forged 3.5" 10/10 cranks for 400$ with chev journals , and use any rod length you desire, with a piston to suit.

XR Van

stick with 6" clev rods on a 351c crank instead.
pistons can be had from srp

russxr67

Yes,its easy to do.
Take your crank to a machine shop and have them machine down the big ends to SBC dimensions whilst maintaining the stock stroke. Then have them widen the crank journals to suit the chev rods cause they are wider than the clev stuff. Custom pistons are needed though.
I have a set of Ross pistons to suit this application ,however they are more of a race orientated design.

potty

You can buy of the self Probe pistons for this application at a fair price-.927 pin size.

gus351

hi F399,
yep, the comments here are all correct. when i got longer rods for mine, cheap cranks were still not an option, so i stuck with standard stroke.

If you are looking for best bang for your buck, then stroking is definately the way to go. Reading all of the other posts in here, you'll find that a capacity of over 400 cubes is achievable with the right setup.

If you are looking to retain the stock stroke, then 6.250 inches of rod length is about the maximum you can go. It will still require custom pistons, and the oil ring with probably need supports as the ring will be so low on the short skirt.

cheers
gus351

LTD351T

I don't know why anyone would bother with the std crank, whats it cost to have the fournals machined? and after that its still just a cast crank.

potty

You will find that most cheap after market cranks are cast to?alot of these cranks are advertised as Steel ,but what they really mean is cast steel???

F399

Thats what I was thinking if you can pick up a forged crank for only $400, as labour would at least be a few hundred to have one machined?
And wouldn't a forged crank be both stronger and lighter then any of the stock 351C cranks?

LTD351T

Yes for sure, but the eagle 10/10 3.5" cranks are factory rejects. They come 10/10 hence why they are less than half the price, but they only usually have them in 3.5" stroke. They are sold as "4340 forged" who knows what it really is but plenty of people run them. My engine builder says a safe 1100HP as long as rpm kept below 6500, the rods are weak point in my case not the crank, zero balance would be even better.