429 vs 460

16494 Views 4 Replies 5 Participants Last post by Lem Evans, Jul 13, 2010

g612gr

Discussion Starter · Jul 12, 2010

I have a 429 block (D1VE 6015 A)/flat top pistons..(going to bore it .030 over) and was going to build the bottom end pretty much stock and put on aluminum heads. Plan on using DJHOAGIN'S recommendations for the 500hp 460 pretty much as a guide.
Strickly a street vehicle..putting it in a 71 Ranchero. If a 429 & 460 were built identical using his recommendations.....how much horse power difference would their be using a 460. Since the 429 has a shorter stroke...my thought is it would have a little better low end torque and that is where it will be most of the time. If using a 460 crank is the better option I don't have a problem doing that...it's just that the one I have (429) is in good shape, not damaged at all. If you've already discussed this if you could direct me to the thread I'd appreciate it. Thanks George

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Paul Kane

· #2 · Jul 12, 2010

g612gr said:
I have a 429 block (D1VE 6015 A)/flat top pistons..(going to bore it .030 over) and was going to build the bottom end pretty much stock and put on aluminum heads. Plan on using DJHOAGIN'S recommendations for the 500hp 460 pretty much as a guide.
Strickly a street vehicle..putting it in a 71 Ranchero. If a 429 & 460 were built identical using his recommendations.....how much horse power difference would their be using a 460? Since the 429 has a shorter stroke...my thought is it would have a little better low end torque and that is where it will be most of the time. If using a 460 crank is the better option I don't have a problem doing that...it's just that the one I have (429) is in good shape, not damaged at all. If you've already discussed this if you could direct me to the thread I'd appreciate it. Thanks George

The 460 will have more power, perhaps 25 hp (because of the additional displacement). The 460 will also have more torque, not the 429. FYI you don't need aluminum heads for 500 hp (exception: D2VE heads) but the factory iron heads will need some modification.

Paul

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Outlaw5.0

· #3 · Jul 12, 2010

The shorter stroke will have less torque, the longer stroke will have more torque. Go with the 460, don't give up the c.i.d.

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tall69

· #4 · Jul 13, 2010

If you're going to buy pistons either way, go 460 and don't look back. It's free (nearly) hp and tq. My local crankshaft shop charged me and extra $40 because I didn't have a 460 crank to exchange. They didn't want the 429 crank.

My motor with large valve ported D0VE's, 10.3:1 compression, Torker II made 527HP. That's 1.12 HP per CI. With that known, the 3.85 crank is worth about 35HP over the 3.59. The torque curve most certainly comes at lower RPM's as well.

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Lem Evans

· #5 · Jul 13, 2010

Bigger displacement will have more tq/hp. Considering that one can install more additional stroke than bore in a BBF production block...that is the way to go.

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