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Tractor Pulling Discussion Forum

Looking for Chads need info.

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01-02-2005 14:14:13

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Chads, I want to know what I need and how much it would cost me to add as much hp to my 300..Or how much do you sugjest..Scott

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01-03-2005 07:06:53

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 Re: Looking for Chads need info. in reply to Hogman, 01-02-2005 14:14:13  
Well, there is a few different engine suggestions I can give you, just depends on what weight, and what class division you pull in, since it is a 300, and being a bit heavier than a H, you should shoot for around 55-60 hp for a starting point. 50+hp is easy to obtain at 175 cubes. See, you already have a decent flowing cyl head, and has a good cam grind in it as well, VS a H engine. Bigger manifold, and carb, and a faster rpm governor. As far as internal engine options,, go with a 350 sleeve and piston kit, 3-5/8 bore. mill the head, if it hasnt been milled before,, .200 can be removed pretty easily, and still be strong enough to be used in the fields. Keep the head plate thickness no thinner than .250 for a full time puller, and over .300 for a farm tractor. Measure the plate thickness at the water holes in the casting of the head. Any decent machine shop can have it tested for cracks, so have the parts checked before you go building. you will have to shoot for 150-180 psi of compression at cranking speed, 150 psi,, looking at around 45-48 hp,, 175-180psi, looking at around 48-52 hp. If you choose to go with a stroker,, it don take much to get you 60 hp, and still run a 3-9/16 bore,,,, avaliable for up to 5.25 stroke. 350 piston and sleeves run around 400 bucks,, stroker piston kits start at $695. They are mainly inframe overhaul kits is what I offer. 574-893-7437 Indiana time, ask for Chad, or Earl. If you need any info on strokers, just ask,,, I left my email open, so if you want to corespond that way,, thats fine too!! Hope this helped a bit, ChadS

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