I both agree and disagree with custom442.
Agree that his combo and goals are mismatched and there is better cam choices based on his butt dyno. Starts making power at 3000, pulls hard from 3500 to 6K. A new cam would be good or advancing what he has 4 degrees but I stayed away from that since he was asking about convertor/rear.
Disagree on the rear ratio. Looks at the power band, it will have little to no torque down low, 3.08 or so will still be a dog. I would prefer to see it with 3.90 gears . Keep in mind his present tire is 28" tall, that's alot of tire diameter (kills effective ratio).With 3.90 the car still has 130mph potential, just not cruising.
"OK... It is the way that the engine does not go over 4600..4700...4800 in 3rd gear "
If you had the power that would put you over 165mph based on the info you provided!!!
My guess is the aero drag has caught up to you way before that (165) and you are beating a dead horse.
I know that body style is stable to atleast 130mph.![Icon Mrgreen :mrgreen: :mrgreen:](https://cdn-0.gbodyforum.com/oldsmilies/icon_mrgreen.gif)
Agree that his combo and goals are mismatched and there is better cam choices based on his butt dyno. Starts making power at 3000, pulls hard from 3500 to 6K. A new cam would be good or advancing what he has 4 degrees but I stayed away from that since he was asking about convertor/rear.
Disagree on the rear ratio. Looks at the power band, it will have little to no torque down low, 3.08 or so will still be a dog. I would prefer to see it with 3.90 gears . Keep in mind his present tire is 28" tall, that's alot of tire diameter (kills effective ratio).With 3.90 the car still has 130mph potential, just not cruising.
"OK... It is the way that the engine does not go over 4600..4700...4800 in 3rd gear "
If you had the power that would put you over 165mph based on the info you provided!!!
My guess is the aero drag has caught up to you way before that (165) and you are beating a dead horse.
I know that body style is stable to atleast 130mph.
![Icon Mrgreen :mrgreen: :mrgreen:](https://cdn-0.gbodyforum.com/oldsmilies/icon_mrgreen.gif)