Gear change tire size dilema need input please
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Gear change tire size dilema need input please
I currently run a 4.10 (10 bolt) 4l60E Yank PT4400 Hoosier 26X10X15. I am going to put a 12 bolt Moser (spool) rear in. Now I can go to a 28 inch tire and bump the gear to 4.56. Problem is I dont remember what my RPM was crossing the traps (last track outing was Nov '04 LOL). I know she did lockup in 3rd before I crossed. Should I go with a 4.11 and stay with the 26? I dont wanna push her beyond 6800 thru the traps would 4.56 on a 28 inch tire keep me under that with my combo. I'm thinking the 4.56 on a 28 will make the car ET better. Any opinions?
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NHRA are you running the 4L60 like me? If so does your converter lock up in 3rd at about the 1K foot mark? I was nowhere near 7K goin thru the traps we have very similar setups and HP/trq numbers.
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Spoke to Mike at Yank today and I am staying with the current combo only a 4.11 now in the 12 bolt as opposed to the 4.10 in the 10 bolt. NHRA that trap rpm seems pretty high on a 28. Anybody else out there runing our combo's with some trap RPM feedback? Thanks !
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Here are some vids from '04 at the track. Listen closely near the end keep in mind I have no lockup switch. 10 bolt 4.10 26" Hoosier
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