Jd b bore question

[BL puller]

Does anyone know, how far can you bore out a stock 48 John Deere B block?

 

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Ray at Extreme Tractor parts has 4.875" pistons for it.

 

[Buster R]

Get in contact with Josh Blackburn he can answer any ? and does great work!!!

 

[craigco]

I got 4 7/8" pistons from extreme tractor, still plenty block left. Been 3 years no issues. Little higher compression and welded rods. Happy with the power for a do all tractor, pulls, parades, farming.

 

[BL puller]

Craig. What kind of horsepower do you get from that setup?