429 ford

hey guys i am building a 429. can t find a 460 crank around here. but i do have a set of 440 mopar rods.what is invoved in putting 440 rods and 460 pistons in with the 429 crank?what stroke would it be? i know i would have to have the rod journals cut down to mopars size. and i would have to get small ends bushed to accept the ford pins. i am guessing everything would have to be balanced.how much trouble would it be? how many ci. thanks

You could get a 4" crank throw easily froma 429 crank by offset grinding it. 429's have a 2.5" journal and a 3.59" stroke. The Dodge rods are 2.25" journal. By offset grinding to a 2.25" journal you can add up to a .5" longer stroke to a crank. This was done a lot before there were larger stroke cranks readily available. Adney @ Performance Crankshaft probably has some offset ground 460 cranks on the shelf that would use more common components. Give him a call and make it a little easier on yourself IMO

schmitty wrote:You could get a 4" crank throw easily froma 429 crank by offset grinding it. 429's have a 2.5" journal and a 3.59" stroke. The Dodge rods are 2.25" journal. By offset grinding to a 2.25" journal you can add up to a .5" longer stroke to a crank. This was done a lot before there were larger stroke cranks readily available. Adney @ Performance Crankshaft probably has some offset ground 460 cranks on the shelf that would use more common components. Give him a call and make it a little easier on yourself IMO

Mopar rods are 2.375" journal NOT 2.250" journal ... that is Pontiac or Oldsmobile.

james00 wrote:hey guys i am building a 429. can t find a 460 crank around here. but i do have a set of 440 mopar rods.what is invoved in putting 440 rods and 460 pistons in with the 429 crank?what stroke would it be? i know i would have to have the rod journals cut down to mopars size. and i would have to get small ends bushed to accept the ford pins. i am guessing everything would have to be balanced.how much trouble would it be? how many ci. thanks

With what you wish to do with a 1.755" compression height OEM 460 piston would have the same stroke as a 429 at 3.59" therefore it would be the same cubic inch engine.

Kinda stupid for the cost outlay.

so what would it take to get a longer stroke?

rmcomprandy wrote:

schmitty wrote:You could get a 4" crank throw easily froma 429 crank by offset grinding it. 429's have a 2.5" journal and a 3.59" stroke. The Dodge rods are 2.25" journal. By offset grinding to a 2.25" journal you can add up to a .5" longer stroke to a crank. This was done a lot before there were larger stroke cranks readily available. Adney @ Performance Crankshaft probably has some offset ground 460 cranks on the shelf that would use more common components. Give him a call and make it a little easier on yourself IMO

Mopar rods are 2.375" journal NOT 2.250" journal ... that is Pontiac or Oldsmobile.

My bad, I had .25"stuck in my head, and that would have been added stroke, not difference in journal size:

schmitty wrote:You could get a 4" crank throw easily froma 429 crank by offset grinding it. 429's have a 2.5" journal and a 3.59" stroke. The Dodge rods are 2.25" journal. By offset grinding to a 2.25" journal you can add up to a .5" longer stroke to a crank. This was done a lot before there were larger stroke cranks readily available. Adney @ Performance Crankshaft probably has some offset ground 460 cranks on the shelf that would use more common components. Give him a call and make it a little easier on yourself IMO

Dad and I did this back in the mid 80's...My first big block

But the max stroke is 3.975, used a 6.770 Mopar rod, with a 4.50" bore is 506"

QtrWarrior wrote:

schmitty wrote:You could get a 4" crank throw easily froma 429 crank by offset grinding it. 429's have a 2.5" journal and a 3.59" stroke. The Dodge rods are 2.25" journal. By offset grinding to a 2.25" journal you can add up to a .5" longer stroke to a crank. This was done a lot before there were larger stroke cranks readily available. Adney @ Performance Crankshaft probably has some offset ground 460 cranks on the shelf that would use more common components. Give him a call and make it a little easier on yourself IMO

Dad and I did this back in the mid 80's...My first big block

But the max stroke is 3.975, used a 6.770 Mopar rod, with a 4.50" bore is 506"

YEP ... that was pretty normal before you could just buy everything for a stroker engine. That also did require a custom 1.56" compression height piston.

james00 wrote:so what would it take to get a longer stroke?

460 crankshafts are not hard to find. If you cannot find one you are not looking. If you want a stroker plenty of sources for all that stuff, just need to look around and don't need to look to far at that. Off set grinding a 429 crank and using those Mopar rods will end up being more expensive. Guys did things years ago that we don't do today as they had not much choice in off the shelf stroker stuff like today. Take advantage of what is available today would be my advice.