options on jd a puller?

[jdo]

I have a 48 to 50 model jd A with a #2 powerblock. Was wondering if anyone had advice on a good combination to make a strong but reliable puller.

 

[jdo]

About how much HP should 9"x3" make? would you have a rough idea on cost? Is the heisler head going to be for sale? I have been looking for one of those for a while.

 

[jd b puller]

Hopefully there"s some A guys out here...

I"d imagine a good running A that"s 6.125" bore x 9" stroke (530CI) ought to make 80-90 HP @10% over depending on who"s dyno you use.

 

[Mike N Mo]

The combo you describe should indeed make 85-90 hp @ 540 pto rpm. How much corrected hp it makes at higher rpms will depend largly on the choice of cam. Mike

 

[jd b puller]

(quoted from post at 00:25:19 10/05/08) About how much HP should 9"x3" make? would you have a rough idea on cost? Is the heisler head going to be for sale? I have been looking for one of those for a while.

jdo, forgot, yes, all the Heislers will be for sale. I don't think they'll fit between the framerails on the B too well.

 

[jdo]

Dont know if my pockets can stand having the crank stroked but i hope to sometime. i am trying to decide what recipe i want to use, its kinda hard to get competition to tell you whats good to use. Most likely would be interested in a head now though. Should i be able to tell much of a difference with a stock block and ground cam (degreed),if i go to the heisler head?

 

[jdo]

how much HP can you get with a 6.125 bore and heisler head with a power grind on cam.

 

[jd b puller]

Generic estimates, your actual numbers may vary.

398CI @1115 -- roughly 55-65HP
398CI @1227 -- roughly 60-70HP

 

[Lil John]

How many RPMs should an A be able to turn and still stay together with a 5.75x9.25?

 

[Drew]

It depends, are you running welded rods or billet rods? I've ran billets at 1450rpm pretty regularly, and have ran more than that on a couple occasions.

Then depending on your camshaft and carburetor, getting one to run that fast with any kind of load on it is a whole other deal.

 

[jd b puller]

There's a guy down here that runs welded rods. I think he's 9 x 5.75 and I don't like to be anywhere near it. He's running at least 2000 RPM's. Rules say up to 2500.

If done correctly, I don't see the issue with welded rods, heck that's what they used to use in the superstock tractors... The nicest thing about billet is that if done correctly, they are dead nutz accurate. Same weight, exact same length, etc.