301 gas

Have a 190xt frame sitting here I’d like to strip down for farm class. Can’t run turbos below 9500lbs here so was thinking a 6500lbs class with a built 301 gas. Read a few different posts, big carb and diesel pistons machined down. Any simple options for longer stroke? What rods? Larger bore pistons that will work? Will definitely need some head work as well.

Diesel pistons with some machining on the tops to lower the compression a bit is the cheapest and obviously the least effective because the cubic inches are the same. A larger carb helps and then a huge carb with a worked over intake manifold comes next. I have done two 4.500" bore engines. One at 405 cubes with a stock crank and the other at 442 cubes with a stroked crank. All my 4.500" engines are custom made pistons and sleeves and cost $$$$$ to do.

Been about 15 yrs ago since I did my last one. Boring block runs me $900 for 6 holes.  Pistons, sleeves and rings are probably $2800 to $3,000 by now for six.

Don't forget cam grind and degreeING the cam.

I have a complete 301 gas engine 350$

Ok, I’m not going to do anything until winter. Just brain storming. Trying to decide between gas or diesel. Only bad part is no turbo classes below 9500. But pretty sure if I build a turbo 301 I could get some pulls to add a 7k or 8k turbo class. Gas would be fun to build. But so would a diesel. Was thinking gas would be cheaper but it would honestly be the same either route. And I already have a flower head with bigger valves for a diesel, so that saves a lot right there.

Absolutely! I will either build a gas, or a turbo 301 diesel. I had a diesel before, ran good with what I had done. Should’ve just coughed up the money for an s200 and I would’ve ran great. Tore it down planning on using one of OPS heads over bore kits. But changed my mind, still would have to pull against 1066’s. If I strip one down and build it like I had before I shouldn’t have a problem keeping towards the top.

Edited by Carl(NWWI) - 13 Jun 2020 at 10:13am

The parts list to convert a 180 diesel to a 180 gas would be a long one: pistons and sleeves to a 301 gas engine......cylinder head and valves.....exhaust manifold (which there are none available) ..intake manifold.....distributer, cap and wires......different camshaft.....carburetor.....governor......different timing cover and front plate on the engine......air tube from air cleaner......fuel pump...….and on and on...…….

Thank you.

It can be done with a complete gasoline engine from a model "G" combine, is what they did, utilizing parts from each engine to make it happen. They still had an issue getting the correct timing cover and front plate, as those parts still had to come off of a gas tractor engine.