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1855 oliver field stock

2

2150

New User
Looking into the IPAs new field stock class. Pretty simple rules 426 cu limit 2500RPM limit P7100 limit they supply a s362 box turbo that you are not aloud to alter must be stock block and head for make and model. Stock intake and exhaust manifolds. No intercooler allowed. And no de-cubing allowed. My question is it possible to get a 310 waukesha to compete with these rules? Can you get them bored close to 426? Can you get the head to flow ample amount of air even though it's not a cross flow head? Am I wasting time? Is there an official bulletin that states a cummins is the OEM replacement block (much rather go this route for ease of parts) any and all info is greatly appreciated

Here is the official rules from the website if I missed anything https://www.illianapullers.com/10500-field-tractors/[/url]
 
The 310 diesel uses a cross flow head. I suggest using a modified 354 Perkins crank (5 stroke) with a larger bore high strength sleeves. The 354 crank could possibly be stroked a bit to allow a slightly smaller finish bore and a bit more block strength. I suspect you could be quite competitive even if you don't build quite to the cubic inch limit.

Do the rules allow swapping in a Cummins engine? A 6.7 with a two valve head and the P-pump would probably be easier.
 
I read the rules. Thing about them is they
say they will bend them to allow all
brands to be competitive. And take
something away. Like Rpm if one brand wins
mostly. Sounds good but hard to police. A
Allis and a Waukesha 426 are 4.250 bore
and 5 stroke. I already know of one Allis
426 with 4.750 bore and 4 stroke. The
bigger bore seems to really help the air
flow. I didn't read anything in rules
about being just for diesels. A gas would
have more power with those rules. And fuel
injection. Just thoughts. Vic
 
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