6000# light hot farm class

What's y'alls thoughts on which Allis would be the best for this class?

6000lb Light Hot Farm

General Rules
1. Tractors in the class will represent models 1980 and older.
2. Limited to a box, bone-stock 3LM466 turbocharger, sealed at beginning of season, Must be the factory exhaust housing supplied with the turbo. "small" motors with small base exhaust will run with 3LM466 adapted to fit their exhaust manifold. All turbo inspections will be done by SKPP Parts for this class, 270-590-0020 or turbos can be supplied through SKPP.
3. Injection Pumps: Rotary and 10mm A pump allowed all CID combinations. P Pump allowed 399CID and below only. No electronic pumps allowed.
4. 480 CID maximum cid, 0% variance. No decubing allowed to meet spec.
5. 0-399cid, 3500rpm. 400-480cid, 3000rpm monitored by sensor (sensor part # isspro R8906). No splices in harness allowed from sensor point to plug at back of tractor. No data-loggers or computers
6. No water injection, no intercoolers or aftercoolers
7. OEM exhaust and intake manifolds only for engine series used. No recast heads No profab-style transmissions.
8. Diesel Fuel only; no pressurized power-adders (propane, nitrous, etc) of any kind allowed.
9. Front of tractor weights cannot measure beyond 13 feet of centerline of rear axle. All tractors must have front lifting device for towing
10. 18.4x38 tires maximum, any cut, radials allowed, 18.4r or metric equivalent. 460/85 R38 or 480/80 R38
11. Hitch can be no more than 20 inches in height, a minimum of 18 inches from centerline of rear axle.
12. No shifting up or down while in competition.
13. Drivers 14 years and older allowed. Any driver under 18 requires parental consent.
14. To encourage variety in class, Sheet metal/Rear end/transmission must be 1980 or older and match OEM. Engine can be in series with same OEM as Sheet metal/transmission/rear. (Examples of possible combinations: 5.9 Cummins with M5 Moline metal/UTS rear, 478 Hercules with 1800 rear/1950 sheet metal, Ford Commander sheet metal/5000 rear/Genesis engine, Allis 180 with 426, IH M rear/450 Sheetmetal/400 series engine) Numerous combinations possible!
15. No dataloggers allowed.

Thanks Dr. I agree on the turbo. Trying to keep the playing field somewhat level for everyone.

I would think 15k on up to whatever you wanted to spend. What kinda horsepower could be got with the rules and using the 301?

Well, at 6000 lbs the heavier engine isn't an asset. 7th gear at 3500 is almost the same speed as 8th at 3,000.

Why the 180 over the 185,175?

A 175 is out of the question. 180 or 185 is the same same when it comes to what you're asking.

Yes it looks to be a fun class and not as expensive as some! It seems to be growing in Kentucky and other areas. How hard would the 190 be to get down to 6000?

Dam right that's a fun class, 301 luvs a P pump and RPM,s for sure,,

Don't know that the 3lm is going to hold up to 4000+ rpm ????

Hardens rods, reground cam with front bolt , billet cam would be better. Stock pistons ok coated be better ,80 series injector 5 hole 16? Simple electronic water inj . And just run it !

Give Cody Adgent in Eagleville  TN a call he may have a rolling chassis 180.

I've talked to Mr Larry and he's got a 190 chassis with tube front. He seems to think it would go light enough for the class

Have found a couple 190s. What mph can I expect in road gear?