H152 Fitment on 80-Series/Best Gearing Options (12 Viewers)

[frankenyota]

Will be rebuilding it myself, otherwise yes best bang for buck is a new box.
Just really like the 5th gear in my VDJ79 that l drive for work so thinking that would be nice for the 15B. Sits on 2,000rpm at 100

 

[AussieHJCruza]

Will be rebuilding it myself, otherwise yes best bang for buck is a new box.

In that case, worth looking into the kit for sure.

 

[frankenyota]

Otherwise maybe taller tyres and look into transfer case gearing

 

[AussieHJCruza]

I might have missed it, what's this going in?

 

[frankenyota]

80 chassis with 40 series extended cab ute, running 15BF+ turbo with H15# gearbox. Liked the idea of auto but looking too hard to get parts.

 

[AussieHJCruza]

You'll want longer legs with the 15B for sure then.
Surely wholesale or someone could do a bell housing to put a compushift to Toyota AB60 or GM 6L80 or something behind it?

 

[frankenyota]

Been speaking to a fella who put a 8hp bmw box behind his 15B but cost $10k.
$6.5 just for the adapters. Manual box seems a lot cheaper at this point. Wanted to get a factory bellhousing from a A44# but hard to find.

 

[mudgudgeon]

Otherwise maybe taller tyres and look into transfer case gearing

Best of both.
Taller tyres reduces engine RPM at a given speed. 33's by roughly 5%, 35's by about 10%.

Larger tyres reduce torque at the wheels by the same amount, so you may need lower gearing for low range for offroad or towing.

 

[Hulsty]

What bellhousing are you using between the 15B and H15X box?

 

[frankenyota]

Looking at using the Dyna bellhousing with the Big4 conversions, they make an adapter to bolt up the H151.
There was talk that the 15B 6 speed, H260 bellhousing fits but no one can confirm it so the next best bet is the adapter.

 

[Hulsty]

Yeah nice, I looked at them for if I break another H55F

 

[frankenyota]

Thought the H151 would hold up to the abuse better than the H55, been good in my 80 behind my turbo 1FZ for a few years now.

 

[BeanMan325]

All h15x are same except separated SEAT 100 series where the shifter is moved behind the steel intermediate plate.
View attachment 3630077

does that mean the one i can get from my local dealer will fit in my 80? and would a H151 bellhousing mate up?

 

[SNLC]

4.3 with the 152 and 35’s goes real nice together.

Cheers

 

[rick_d]

I have hdt 12 valve, h152, and 3.90's with 255/85/16. Mainly highway and local driver.