it wouldn't hurt to get a set of steelies and the tallest profile skinny tyres you can find/fit for those long trips, after all we aren't cannonballing it all over the country.

D yes when the car was a street car, on several road trips we would drive the car absolutely floored for hours at a time. Do note that these trips usually involved bombing down 2 lane roads late at night. It is not uncommon while driving across the Mojave Desert to not see another car for 100 miles. It may sound like the rods are going to come out of the block but well they don't.

Tom

No ddgonzal im not cursing at 5000rpm but it seems Tom does. at 5000 im boosting!

Yes i would say 4200rpm at 110km/h is what ive got. So im looking to reduce that to around 3000rpm if possible,to cruse a little smoother.

From your info L18_B110 (thanks mate) it seems if i go 3.7diff with 60 series tyres i might get very close to the mark.

Also to update you all on Dellow prices for the Celica 5 Speed in Australia its $1200 for the box only (Reconditioned) $700 for the bell housing, then they offer the tail shaft yoke, speedo cable, clutch etc all up total of $2950. After that you need to install and make a gearbox crossmember and have the tailshaft made up and balanced. So by the time its done your well over $3000 easy.

Quote:

1200 ute 1:1 4th gear, 4.11 diff and assuming 195/50x15 tyres, that's
3800rpm at 100kph
4200rpm at 110kph

3.7diff would make it:
3400rpm @ 100
3800rpm @ 110

D its 2720 is everything(cables mounts etc) aswell as a reco box.

You are not cruising at 5000 rpm, now are you? With 4.11 gears and 100 kph, you are probably turning 3000 rpm, is that it?

3.7 would be the go, 3.454 would be the best with a 4 speed and 60 profile up from your 50
Cant believe Dellows prices them that high now. Its cheaper to cut and shut a 71C box

Thanks guys, if I can reduce my revs by 500 to 1000 rpm then ill be happy till the 5speed comes along. To me driving on the freeway at 5000rpm is not cruising. And for long periods of time forget it. ill do a few calcs and see what I get. Cheers, also the tyre profile is a good one, I have 50 series profile now I might try 60 next.

From what I've read. Ill need the shim to use the bluebird diff, but my axles and tailshaft should be fine from the 1980 1200 ute.
Is that correct?

Amen to that, Tom.

What profile tire are the 15's??

If you have option of going to a different aspect ratio...............from 50 to 60 series etc that would drop the revs 300-400 Rpm's

Also define revving its arse off.........an A-series motor will spin 5K all day, it might be loud in the car but otherwise it isn't an issue.

Tom