Hmm..Power?

I have a 64' F-head that is pushing 34" ss's. I would eventually like to go bigger; maybe 40"s. So my question is is there any way to squeeze more power out of my little hurricane or should I just go the other route and replace the motor?? Anyone figured this one out or added anything to the 134 to increase power? My gears are already low enough I believe with the 5.38's and t-98a trans with 6-1 and d-18 t-case.:hurrican:

 

Oh and does anyone happen to know the rev limit?????

 

not alot to work with to begin with
72hp @ 4000rpm
with 40's added, it can only get worse
no experiences with that large of tire myself, but I think an engine/trans swap is in your future.

 

this is gonna get pricey.
but lucky for you that 98 is worth money.
so you can sell it to help finance whatever you decide on.

 

well that answers the question. Thank you gents.
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