I haven't got around to correcting this issue on my boat after going to holley efi. Is there a adapter to get full throw? Half throttle is full throttle right now. Thanks

You can change most likely change the mounting hole on the throttle levers.

Are you using the 1000 cfm body?

Show us a picture of you linkage set-up.

Shifters don't have other throws on them , that was my first guess. Don't have a pic but my current setup is this adapter on the t/b. Yes 1000cfm
http://www.michiganmotorz.com/thrott...FZTm7AodxnIAug

After doing the same swap as you, I ended up with the same issue. The problem was solved by making an extension bracket out of plate aluminum and bolting it to the throttle body lever assy.Then attaching the cable to the extension bracket. It works great, and the throttle handle moves full sweep now.

I just looked at a 2000cfm TB, you should have a little over 3" of travel on your control cable. If not; something is not correct in control movement.

That's about right. It opens up the t/b all the way but is only half way on the sticks.

Yup. Or t-body.
Closer to pivot point on Throttle or further from pivot point on tbody.

I think I have that right. It's Sunday AM. LOL.

Winner-winner - chicken dinner! that should correct his problem.