Project mini "Full Pull"
Project mini "Full Pull" My dad built a mini pulling tractor that is based off of a garden tractor. He runs in the wild class which uses a carb'd v8. He originally had a SBC in it.
For now the set up is stock motor with a Vic Jr intake and a 650 carb, custom converter, built th350, electric water pump. It's so close to the end of the year we decided to just finish it out with the stock motor. This winter it will get a custom cam, valve springs, rockers, and a set of worked over 5.3 heads.
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First pull ever with the LS and it did ok. It needs to get higher in the rpms. I think the converter may be too loose. Either way here is a vid.
Last edited by THADD; Oct 10, 2013 at 05:38 AM.
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Fix the Link! Cool project, I am excited to see the results so fix the damn link!
If you are looking for more RPM, maybe consider replacing the stock springs this season. The stockers can get tired and limit RPMs. Another thing to check, the stock MSD box has the RPM limiter set at 5500RPM from the facotry, be sure to bump it UP! Also since you are not concerned with "street manors" maybe consider stepping up to a 750CFM to ensure enough top end flow. A lot of guys run 750 or even 850 carbs with good results. I'm running a 750 on a 100% stock 5.3 and it seems to eat it up on the top end.
Also a question, on a tractor of that size is switching to an LS1 and losing 130lb'ish seem to adversly affect traction? Or is that an issue you address by just adding more plates up front?
If you are looking for more RPM, maybe consider replacing the stock springs this season. The stockers can get tired and limit RPMs. Another thing to check, the stock MSD box has the RPM limiter set at 5500RPM from the facotry, be sure to bump it UP! Also since you are not concerned with "street manors" maybe consider stepping up to a 750CFM to ensure enough top end flow. A lot of guys run 750 or even 850 carbs with good results. I'm running a 750 on a 100% stock 5.3 and it seems to eat it up on the top end.
Also a question, on a tractor of that size is switching to an LS1 and losing 130lb'ish seem to adversly affect traction? Or is that an issue you address by just adding more plates up front?
Cool project, I am excited to see the results so fix the damn link! If you are looking for more RPM, maybe consider replacing the stock springs this season. The stockers can get tired and limit RPMs. Another thing to check, the stock MSD box has the RPM limiter set at 5500RPM from the facotry, be sure to bump it UP! Also since you are not concerned with "street manors" maybe consider stepping up to a 750CFM to ensure enough top end flow. A lot of guys run 750 or even 850 carbs with good results. I'm running a 750 on a 100% stock 5.3 and it seems to eat it up on the top end. Also a question, on a tractor of that size is switching to an LS1 and losing 130lb'ish seem to adversly affect traction? Or is that an issue you address by just adding more plates up front?
We got on the dyno the other day to see if we could pick up a little power. On the first pull we noticed the A/F was stupid lean, in the 17's. Jetted the carb and raised the fuel pressure and picked up 70 hp. It's funny how clean and smooth it pulled as lean as it was.
Ok so we had a pull today, only the second time out ever with the LS motor and we shut down shop!!! First place all day! What is so bad *** is all the other guys are running built heads, cam, etc SBC and we come with a 100% stock LS1 slinging internals to 7000 rpms on the rev limiter and run the show. Here is a vid of one pull.....
