460 offset ground crank..
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460 offset ground crank..
Kinda (really) new to the forum. Wanting to build a stroker. I have read that you can have your stock crank offset ground and use chevy connecting rods. Im sure this has been discussed somewhere on here, just haven't found it. Any information would be greatly appreciated. Also, I have a few questions:
What kind of displacement can you expect, 514 +/-?
Can one save much money over buying a "complete" stroker kit?
Is this a reliable method?
My goal is to build 550+ hp to run on pump in a weekend driver thats used for pulling the boat and playing in the mud.
Thanks in advance
What kind of displacement can you expect, 514 +/-?
Can one save much money over buying a "complete" stroker kit?
Is this a reliable method?
My goal is to build 550+ hp to run on pump in a weekend driver thats used for pulling the boat and playing in the mud.
Thanks in advance
Posting Guru
Joined: Sep 2005
Posts: 2,238
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From: Kiefer, Northeastern Okla
Unless it's a good forged crank, by the time you pay for the machine work on a cast crank for offset, (from a very reliable shop)I say no, it's not worth it, and go new. Kits do have an advantage, in that they're already cast or forged for the application, and with minimal machine work and balancing, comes out cheaper in the end instead of mixing and matching parts. JMO, but I have to recommend Scat products over Eagle. IMHO, if you can't make 550hp on really good pump gas with a stroked big block, you need to find another engine builder. Just don't ask too much from a stock block....BTW, go here for some really good info-https://www.ford-trucks.com/forums/forum53/ and welcome to FTE.
Pete
Pete
Posting Guru
Joined: Mar 2006
Posts: 1,526
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From: fargo, nd
a stock block is capable of 800hp reliably... some people have put as much as 1700 horse through a stock block but its definitely not recommended as youre playing with an extremely unstable combo at that point. for the vast majority of builds the stock block is more than adequate. the stock rods are the weakest link in the stock shortblock but even theyre good for 550hp and 6000 rpm assuming proper prep
Cargo Master
Joined: Aug 2000
Posts: 2,931
Likes: 12
From: SW Michigan
offset is fine.....
The offset ground cranks are fine. We used to do loads of them. On the 460 and on the 390. Even some 428 cranks to 2.311 to get 4.125 crank, uses 400 rods. On the 428 crank you have to watch the oil passage. And there is no problem with doing it this way. But it isn't something just any grinder is comfortable doing.
That, and the fact that now you can now buy new cast AND forged cranks, in 4 inch, 4.125, 4.250, 4.375, and IIRC, the 4.500 for the 460. It makes the extra work offset grinding and fitting the rods seem unneeded.
The normal ( 6.136 ? ) are too short to be useful, so you still need special rods, the longer rods ( 6.7-7~) help keep the piston skirts away from the crankshaft counterweights. It is probably best economically to buy the stroker kit, and bore and hone the block to fit. The 460 block has lots of room, and the labour shouldn't cost anymore than normal. Have fun, you'll love the extra torque that the big displacement provides. DinosaurFan, and yes, I'm at Dad's house
That, and the fact that now you can now buy new cast AND forged cranks, in 4 inch, 4.125, 4.250, 4.375, and IIRC, the 4.500 for the 460. It makes the extra work offset grinding and fitting the rods seem unneeded.
The normal ( 6.136 ? ) are too short to be useful, so you still need special rods, the longer rods ( 6.7-7~) help keep the piston skirts away from the crankshaft counterweights. It is probably best economically to buy the stroker kit, and bore and hone the block to fit. The 460 block has lots of room, and the labour shouldn't cost anymore than normal. Have fun, you'll love the extra torque that the big displacement provides. DinosaurFan, and yes, I'm at Dad's house
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