brett

i was just curious what you guys thought i have a 1980 and am the original owner... it has the 20r in it with the 4 speed i would like a 5 speed and bigger motor preferably a v6 but im not sure what is going to give me the best results with least fabrication, though if needed not a problem. THANK YOU.

one2high

I guess you need to decide what you are going to do with the truck and then you can make a better decision on which swap would be best.

brett

basically i offroad the truck and i want to keep that aspect going im not saying money isnt an issue but im definetly willing to put in some money... but at the same time i dont want a full project truck, i just want something with more power and still be able to drive to work in but if i see a gnarley hill or nice rock garden i still want to be able to tear it up.

'884Runner

I would look into building up a 22R for it. With the Pre-84 22R blocks, alot of people actually put 20R heads on them to boost the horsepower a little bit. Or you could swap it over to a fuel injected 85 and up. With a few performance parts, you can get around 150 horsepower out of one. Big improvement and alot less aggrevation than moving motor mounts, figuring out how to make the wiring harness work, etc.

scooper

You just cant beat a 22r. Simply put. If you plan to do alot of steep hill climbing, go fuel injected. I have always preferred carbs myself. I'm not far from you im close to Auburn Alabama myself. Down here we dont have much for rocks, I think you will be able to get by with a nice weber carb.

The 20r head swap is a MYTH. Just swapping a stock 20R head for the 22R head on the 22R block (AkA Hybrid Engine) does not give you ANY HP gains at all. It does however, have larger ports and allows you to reach torque curves sooner than the 22R head. In other words you do not have to rev the engine as hard to reach your peak HP with a 20R head, which is why alot of people say it has more HP, it does not. Just kicks in a little sooner =)

Another myth is about the Double and Single roller chains. They have the same tensile stregth. One is not stronger than the other, however it does require 4 HP more to turn the double chain then the single row chain.

Anyone who does not believe me or wants further information talk to:

Ted@Engnbldr.com

4banginRunner

3RZ! more power than a 22RE, still a 4cyl for good gas mileage, availability, conversion parts are out there (i.e. Marlin, ORS)