OK so here's what's up I just bought a 81 hilux with a 4.3l swap, it was bored over .20, has flatdome pistons and, a comp cam besides that everything on the truck was stock. Will the stock Toyota rear end hold up and what about the running gear? I plan on beefing up the engine a bit later on ie. Intake manifold, carb, and headers. So what needs replaced???

 

If the truck has already been swapped what are you asking? Is it not finished?

 

It was swapped but not by me I'm going over it right now, this is my fist yota truck and I'm just wondering if all of the stock stuff will hold up with 300 rwhp

 

Such as transfer case, tranny, and differentials

 

That's a high hp estimate for a 4.3, does it just have an engine? No trans or transfer case currently?

 

it should hold up fine, mine does with A 400hp 2jz, the trans on the other hand wont if its the stock 4cyl one. an r150 from a v6 truck will be ok though. ive seen 2 cluster gears blown to hell behind 4.3's with the 4cyl. transmission, rear should be fine especially if you arent locked

 

It is just the stock 5 speed that the truck came with. I just bought the truck from a guy and he said it always was great for him but I plan on getting a intake, a carb, and headers (any recommendations for a guy on a budget?) want to build the motor up as much as possible and I really like the skinny pedal and don't want to blow up a rear end or a trans a 100 miles from anywhere

 

It has the stock trans and t case

 

Run it as is and don't add anything to the motor to add power.
As said above the r150 trans is stronger than the 4 cylinder trans. But that will require an adapter on both the engine side and to run the 4 cylinder transfer case(which is plenty strong).

 

I'll do that and I guess if it breaks FIX IT!! 👍

 

And thanks for the help!