F800 429
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F800 429
There is a guy that says he has a 429 out of an F800. Just curious if this is guaranteed to have a steel crank or would you have to tear it apart and get some numbers. He says that it has the 'longer' crank. I think I read that this has something to do with the crankshaft snout? What needs to be done to this crank to make it work in a standard 429 block, and how expensive is it? Is there anything else worth anything on this type of engine?? How much would it be worth in running condition??
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Joined: Jul 1999
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From: Missouri
If it is a 429 it will have a steel crankshaft. The snout on the steel 429 cranks is the same as the cast 370 cranks,so you can't go by that. The crankshaft will fit in a 429 or 460 block the way it is but the snout will need to be turned down and new keyways cut in it . The rear of the crankshaft also needs a custom bushing to accept a torque converter or pilot bushing for car or pick-up tranny.
The oilpan is also a good pan for a 429-460 swap into a 4x4. It is a 10 quart rear sump.
The oilpan is also a good pan for a 429-460 swap into a 4x4. It is a 10 quart rear sump.
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Thanks for the info. I found a really good article regarding these type of cranks on 460.com and what needs to be done to them to make them work in a high performance application. The pan would be nice to utilize. Would this block still be just a 2-bolt block?? Are the cylinder walls any thicker or anything??
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Joined: Jul 1999
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From: Missouri
Glad you found the other info. I was gonna put a link to that in my post but didn't have time to look it up. The blocks aren't anything special. I used one of the crankshafts in my pulling truck motor for a little more reliability. So for it has worked great.
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Joined: Jul 1999
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From: Missouri
Have you built and ran any 800 horse 2 bolt blocks? I know there are some out there but most people building that kind of motor will use an aftermarket 4 bolt block. Rpm's have to be considered also. I have saw 800 horse 4 bolt motors have bearing issues so I wouldn't want to spend the money that 800 HP cost and stick it in a 2 bolt block. My motor might make close to 700 HP and I put 4 bolt Blue Thunder caps on it and used a steel crank for peace of mind.
Last edited by greenhighboy; Oct 23, 2007 at 10:21 PM.
Hotshot
Joined: Dec 2003
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From: iowa
yep running a little over 900hp on a 2 bolt block, I do run a main girdle and with proper tune I am not having issues with cap walk. I also know I am not he only one pushing 900+hp on factory 2 bolt blocks and not having any trouble with them. I would NOT recommend that with nitrous though and you better know how to tune it and keep detonation out of the engine.
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