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Old 11-17-2006, 12:43 PM
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Ford 429 Opinions and Specifications

What is the bore and stroke on a 429? Is this a good starting point for a 4 wheel drive mud obstacle course race only vehicle? The engine will be in a 76 3/4 ton PU. Does this engine respond well to "well chosen" aftermarket speed parts? The truck has Dana 60 in the rear and 44s in front. Opinions Please

Bob

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Old 11-17-2006, 05:06 PM
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429's came in several versions, including the Boss 429. You probably have a standard 429 Thunderjet with either 2V or 4V carburetor.

It depends on how much you want to spend, but there are a lot of parts out there for the 429 and it can be built for the high torque your truck needs for mudding.

Bruce
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Old 11-17-2006, 08:05 PM
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Bore is 4.36 and stroke is 3.59. It shares virtually everything with the 460 which would be a better starting point the 3.85 stroke in the 460 helps make more torque as well as making the ports work better at a lower rpm range. Really, a 429 is probably harder to find than a 460, they had a lot shorter production run and that was many years ago. The 460 was made until at least the 90s sometime and available in pick ups.
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Old 11-17-2006, 09:59 PM
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Here are a couple great sites for info and parts.
http://www.highflowdynamics.com/
http://www.460ford.com/
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Old 11-18-2006, 11:54 AM
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I agree with Woodz..... use the 460. It costs the same and makes 30 more across the board.

Of course, none of the 429/460 plain passenger car heads are worth much power wise. Their tiny ports and low compression and open chambers might be a problem. If you can find a 69-72 429 the heads are better chamber wise and would make a stock later model 460 short block easier to get compression up. Their quench would help a lot too.

I built one about 5 years ago in a 95 F 250 4wd and it was pretty wrung out at 5000 rpm. But it had good torque. Comp makes a good 4x4 cam for the 460.
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Old 11-18-2006, 02:29 PM
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the only heads to avoid are the d2ve heads... the casting number is just above the exhaust manifold, the last year of the 429 was 1973, last year of the 460 was 1997. i have a 429 in my garage im rebuilding for my truck, im putting a 4.5" stroker crank in and boring .030 which gives a 545
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Old 11-20-2006, 08:39 AM
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Ford 429

Will a 460 crank fit in a 429 Block? One of the local machine shops has a 460 with Edelbrock performer heads,cam, manifold and 800 carb. I guess a customer had them build the engine and then couldn't pay them. The short blk is all rebuilt also. Maybe I should forget the 429 and buy the 460 for $5500? I didn't want that much money in this truck, but I've added up the cost to rebuild this 429 and it's not much different.

Bob
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Old 11-20-2006, 09:40 AM
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The 460 crank is a direct drop in. You will need the 460 pistons because they use a common rod and the pin height in the piston is different to compensate. I think if I was going to spend $5500 for an engine, I'd look into a FRPP Crate engine. I think they have some complete engines in that range and they hace 2 yr./24,000 warranty. They also have specific builds that are HP rated. I would probably drop in the 460 crank and have some 460 pistons pressed in, that is going to be waaaay less expensive. I don't think I'd be concerned with having Edelbrock heads in a truck, if that's the big attraction of the engine from the machine shop.
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Old 11-20-2006, 10:11 AM
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460

Why build a 429 when its just as cheap to build a 460. if you can find them use the rods with the football shaped head. I always made good power with the police inteceptor heads, use screw in studs, stock, and 76 cc chambers, about a 550 lift cam to keep the torque up and bore it .060 and use the 460 crank. I used a 750 vac sec carb on a port o sonic offy intake with 2'' headers. you will want to end up with a 10-1 comp, so you might have to mill the heads. on the p/i head i have milled as much as .060. runs good.and just my 2 cents.
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Old 11-20-2006, 03:39 PM
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if youre spending 5500 dollars you could just as well build a stroker for that... 4.3 stroker crank, .030 over pistons, 6.7 rods, and have a 521... the whole rotating assembly shouldnt cost more than 1600 dollars- and thats all new parts... then machine work and assembly for probably another 500 or so... then spend the other 3000 on top end stuff and have a heck of a nice truck motor
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Old 11-21-2006, 05:59 AM
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there is one 429 that would be worth rebuilding though... some f600 and 750s in the 80s had a 429 with a forged steel crank... put that engine in a pickup, put a blower on it... and have fun
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Old 11-21-2006, 06:21 AM
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Quote:
Originally Posted by darrin26
there is one 429 that would be worth rebuilding though... some f600 and 750s in the 80s had a 429 with a forged steel crank... put that engine in a pickup, put a blower on it... and have fun
Unfortunately that crank is much like the FT cranks. The snout is much larger and need some expensive machining in order to use any parts intended for an automobile engine.. like the pulleys,etc. The heads are small as well. So, you wind up with more money that any other combination that you could build with a 460. Remember there has been little, if any, reports of the factory iron cranks breaking so a forged crank is overkill in most cases.
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Old 11-21-2006, 10:34 AM
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Thank You

Thank you again for the broad range of information. I think I will go with the 460. I may have one or two questions as I put this thing together, but for now its get the parts and start on the short blk.

Thanks again

Bob
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Old 11-21-2006, 03:15 PM
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stock 460 cranks are good for about 800 horse... with good heads and a big blower you could easily exceed that... that 429 steel crank will hold 1200+ horse... and if you live in an agricultural area like i do you should be able to find a complete engine pretty cheap... a little prep work and the blower and heads should bolt right up... you wouldnt even need to change the accessories except remove the a/c compressor if it has one and the hydraulic pump if it has one... im pretty sure they werent very smog regulated that big
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