dang boy, you are using a 4cyl non-turbo trans with a V8... *frowned*
At least I hope your 85 was originally a fuel injected version.
No, the R-series trans are not as strong as a proper V8 trans, but its the strongest 4WD transmission Toyota has ever made (massproduction based / also have no clue about the 6spd) and it's at least 5 times stronger then the W56 and 8 times stronger then the G54, two possible transmissions in your truck now.
The cool things about the R-trans is #1 its Toyota, #2 a Crawler and gear drive t/case bolt 100% directly on, #3 its much lighter then an American trans....
Also can get 'em with a 5.15:1 first gear.
But if I was going to drop the clutch behind a V8 at 8000 rpm it would not be in a Toyota hilux pickup
