Farmall pulling tractor advice b-h

[Reed b]

So Im wanting to build my first pulling tractor wanna stick to 3500-3750-4000 depending on the event I have a restored b from my grandpa or a chance to get a h from a friend I know the h has a advantage with rear tire size but there wont be much movable weight would it be better to do a c-153 combine Motor with bigger tires and be able to move more weight around to balance the b or go with the h at the 4500 class there is some really hopped up tractors that are running road gear in the non mph events so wanna stay under that weight thanks
 

[FarmHills53565]

It depends on your rules. A Farmall B & H Typically are light on cid to run against the allis WC-D17.
 

[535353m]

An H, properly done will compete with most in the slower 3500 # classes with ease, but big bore, stroke is needed,the right cab,timing and some carb work, 85-90 HP for sure. My friend's H has been on top in the 6500 # classes in the past with 18.4 x 38 tires, and has surprised many people that laughed before he pulled. LOL
 

[showcrop]

Bs pull in 2500 or 3000.
 

[VicS]

Get the H. 38 in tires.
 

[Reed b]

Was thinking the h with a c175 and some head and carb work to start then maybe a bigger bore and stroked in the future also thought about doing a Allis wc or wd my neighbor has a farm implement place with a bunch of project tractors around as well
 

[Reed b]

Anyone have any ideas on a mild stroker crank for it to run in the 175 bore
 

[Leroy]

Just one thing to think about> From what I have seen at pull I worked for years. The wider treads will spin out faster than narrow treads These are antique pulls but I would thing the wider on any make will spin out faster, take say the H and put wheels in narrow tread position and then just move to a wider tread position the wider will get stoped before the narrow position. A Farmal B is a wide tractor, Made to cultivate 2 40 inch rows, the BN is more normal tread
 

[Lady In Red]

As and Bs are pretty goofy, short, small tires if you re set on the small classes build a strong C or a light H