Forged Crank (3.850)

Is any company making Forged 460 cranks? If not, has anyone ever took one of the forged 429 cranks and made a 3.850 stroke, or is that even a possibility?

Thanks

Its possible to make a 429 steel crank into one, if you go to a BBC 2.2 journal size.

Are these cranks hard to find and what is the largest stroke that can be ground out of them? 4.125 or 4.150?

They are not real common, but not impossible to find either. With a chevy journal you can probably get around 3.9-4.0 stroke out of one. If your looking for a 4.15 is probably cheaper and easier to just get a SCAT or similar off shore one.

You don't hear of many stock 3.850 cranks breaking........ They tough

Yes it can be done and is done a lot in truck pull setups and small CID race engines. You need to find a 429 out of a F600-700 truck. The snout will also have to be redone.

can be done , got one thats done , the most stoke that can be done is 3.880 and lower to get a certain big bore short stroke for cube limit.

IDT-572 wrote:You don't hear of many stock 3.850 cranks breaking........ They tough

I agree

I run a 4.5 bore, and I want to run a small, but larger stroke than a 3.850 but it needs to be an OEM crank. I will spin it pretty hard. I am going to change my career, no more mud.

Blake,
Finally tried out the shift pattern that we discussed, it worked real good, it felt like it hooked up better, that's a lot better. Thanks for the heads up. Took first place Saturday.

DanH wrote:can be done , got one thats done , the most stoke that can be done is 3.880 and lower to get a certain big bore short stroke for cube limit.

If a 3.880 is the largest stroke, then going past 3.850 would not be worth the cost of the custom pistons. IMO

Thanks

deerhunter3814 wrote:I run a 4.5 bore, and I want to run a small, but larger stroke than a 3.850 but it needs to be an OEM crank. I will spin it pretty hard. I am going to change my career, no more mud.

Blake,
Finally tried out the shift pattern that we discussed, it worked real good, it felt like it hooked up better, that's a lot better. Thanks for the heads up. Took first place Saturday.

Glad it worked for you........... Congrats on the win...........

deerhunter3814 wrote:

DanH wrote:can be done , got one thats done , the most stoke that can be done is 3.880 and lower to get a certain big bore short stroke for cube limit.

If a 3.880 is the largest stroke, then going past 3.850 would not be worth the cost of the custom pistons. IMO

Thanks

why would custom pistons be needed ? OTS pistons are easy to get. know Probe got them .

dfree383 wrote:Its possible to make a 429 steel crank into one, if you go to a BBC 2.2 journal size.

Dave, What would C.I be w/that crank and 6.7 rod w/.030 overbore?

DanH wrote:

deerhunter3814 wrote:

DanH wrote:can be done , got one thats done , the most stoke that can be done is 3.880 and lower to get a certain big bore short stroke for cube limit.

If a 3.880 is the largest stroke, then going past 3.850 would not be worth the cost of the custom pistons. IMO

Thanks

why would custom pistons be needed ? OTS pistons are easy to get. know Probe got them .

I was just assuming that it would be a custom deal, if it is not then this might be an option for next year. Thanks for the info. Now to start looking for a crank.

IDT-572 wrote:

deerhunter3814 wrote:I run a 4.5 bore, and I want to run a small, but larger stroke than a 3.850 but it needs to be an OEM crank. I will spin it pretty hard. I am going to change my career, no more mud.

Blake,
Finally tried out the shift pattern that we discussed, it worked real good, it felt like it hooked up better, that's a lot better. Thanks for the heads up. Took first place Saturday.

Glad it worked for you........... Congrats on the win...........

Thanks Blake, I have a new deal up my sleeve, I'll give you a heads up later.
With some questions probably.

I've got one,it's in a kit deal from Engine systems a few yrs. back. I don't know the exact stroke of the crank.(was suppose to be a 472 C.I) it has Crower 6.7 Billet rods and .030 Venolia Domes. If anyone needs it, let me know. I have new rings,M/R bearings and the crank is fresh

bbf-falcon wrote:I've got one,it's in a kit deal from Engine systems a few yrs. back. I don't know the exact stroke of the crank.(was suppose to be a 472 C.I) it has Crower 6.7 Billet rods and .030 Venolia Domes. If anyone needs it, let me know. I have new rings,M/R bearings and the crank is fresh

472, on what bore? We might figure it that way.
I was hoping the 429 crank would go at least 4.0.

If you can figure out the stroke, please let me know.
Thanks

bbf-falcon wrote:I've got one,it's in a kit deal from Engine systems a few yrs. back. I don't know the exact stroke of the crank.(was suppose to be a 472 C.I) it has Crower 6.7 Billet rods and .030 Venolia Domes. If anyone needs it, let me know. I have new rings,M/R bearings and the crank is fresh

.030 would be 4.390 bore

Great info. guys.

bbf-falcon wrote:

bbf-falcon wrote:I've got one,it's in a kit deal from Engine systems a few yrs. back. I don't know the exact stroke of the crank.(was suppose to be a 472 C.I) it has Crower 6.7 Billet rods and .030 Venolia Domes. If anyone needs it, let me know. I have new rings,M/R bearings and the crank is fresh

.030 would be 4.390 bore

Sounds like a 3.9 stroke 3.9X4.39 comes in right at 472.