V8 guys, a few questions

Had a few questions concerning the antique V8 Pullers out there and how they have made their tractors work.

--Are many of you using the same gear set that the tractor came with? In other words, you stayed out of the transmission housing on the tractor?

--I'm trying to visualize putting a V8 in a tractor and can see the crankshaft coming out of the engine, needing a possible transfer case, and a clutch somewhere in between (??) and then connect to the tractors original tranny?? If a transfer case is needed (like in my situation) how do you decide what ratio it needs to be internally if I fabricate one assuming a 500+ hp engine and the original drive-line of the tractor? I'm assuming output speed and torque need to be considered in connecting a much larger engine to a gearset that was designed for a 50hp (max) engine. How is all of this figured without the obvious trial and error?
 
Thanks for the reply, but I'm not curious about what V8 engine you are running, rather if using a transfer case (or not) what ratio is used, and if using stock gearing and tranny. Also the clutch
 
The few V8s there are around here, they just used an auto trans in front of the tractor transmission. Generally the tractor transmission gears will hold up fine. Originally they needed to
last 5000 hrs, as a puller, 100 hrs are plenty.
 
you will not know what speed your tractor will pull at until completed and done.500 Hp will not run 18.4 x 38's on good clay in most tractors third gear.Actual Speeds that I hear are from 15-24 mph.Remember that if you have a true drop pan sled the speeds will be higher and will pull hard only after the pan drops.And slity slay is much different than the more finer soils.My auxiliary trans is close ratio,with second gear 57% of engine rpm,works very good for most tracks.Depending on the type tractor you have,sometimes gear strength is a problem,Massey 44 will not hold up in second gear.Rpms of engine determines speed as much as gear ratio,mine maintains higher rpms through out the pull no matter how hard it pulls,lugging down is what breaks gears,shafts and ect.If you want, I will call you if you post a number.And most brands have several ring and pinion choices so not knowing what speed yours can maintain is a mystery until finished.My experience shows that 500 ish hp will pull around the 15 mph range and stay on the power.Having a sufficient amount of movable front weight is important.The trouble with most transmissions is the spacing of the gears,35 - 40 % is common,ones too slow,next too fast,I purchased a close ratio to solve that issue,cheapest HP you can buy.Watch you tube videos.
 
if you are serious about enjoying pulling a V8 with much success,you will need a double disc slipper clutch of some sort.Leaving the line at high rpms is what it takes with the gearing needed to use the power later on,speed wins pulls,speed takes power and balance,many like a lot of wheel slippage and the front in the air,it works best for me to have a fairly heavy front end,hitch height is your friend,run very low most of the time.
 

That is what it LOOKS like..!!!

The wheels spin and the tractor Skates all over the place as it goes CRAZY with all that power...!!!

Great fun to watch...!

Ron..
 

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