Sprokets

Hello I am running this 1979 big block (over1400cc) I did put extra disc kit from ape and its holding it pulls like a train but its Spining the tires in almost every gear if I push it .
So my brother is telling me I should put the sprocket combination so it gets longer but it has already 15 tooth in the front and 37 in the back.
any suggestions.

What rear tire are you using and how old is it? Maybe try one with a stickier compound? Ed

Sayonara wrote: Hello I am running this 1979 big block (over1400cc) I did put extra disc kit from ape and its holding it pulls like a train but its Spining the tires in almost every gear if I push it .
So my brother is telling me I should put the sprocket combination so it gets longer but it has already 15 tooth in the front and 37 in the back.
any suggestions.

That combination would be a blast on my bike but it would be spinning like a little bike at FWY speeds. I'm running 16/35 sprockets on mine. At around 4/4500 at 70 and lost a bit on takeoff. 1st and 2nd are longer as well as the rest so I don't have to drop down as much to pass slow pokes.
Steve

Trial and error Bud.
I run 15 / 33 or 16 / 33 with my turbo
The ideal situation is gearing to hook up without spin or just a little spin to use all your potential power.
Then loads of variables based on use.
Weight of bike and driver combination ,
Traction available based on track conditions ( Heat, asphalt / or concrete. ) Track prep , amount of rubber on launch pad , ect ...
Condition of rear tire, Amount of air pressure, Slick or tread and tire compound
And all these things change day to day Good Luck