74 fj40, What path to choose? Efi 1.5f or 5.3 v8 (1 Viewer)

[nitroid13]

I am at a crossroads with my 40, and looking for some insight and more information on both paths with my 40. 02 gmc 5.3 or sniper efi f1.5. Both are equally viable options, things to know about my 40 I believe it to be a factory fst, it has all the hallmarks. The body has around 170k+ miles. I do have another 40 that is all original 51k original miles but it's in "barn find" condition, but it does run and drive. so I have the "original" one. My goal for my 40's intended purpose is mainly trail riding and mild rock crawling but also have a few comforts to be able to be on the street. It will never be a fully restored original truck, nor do i have any plans for it to be original. But the ways it has been modified, it can be put back original for the most part. Ultimately i can use this efi kit on any one of the 3 40s i have so its not that big of a deal. so will have 2 more posts for more context on what I have and what I'm planning on buying depending on which route I go.

This is the most info I have ever released about my 40 in a post and I'm planning on a full build thread soon!!! And going through the full history of the 40 to the best of my knowledge

Original parts
• engine(rebuilt 2005) less than 10k miles but time is a factor as well.
• body tub
• axle housings, front diff, and axles
• frame

Toyota parts
• flywheel/clutch/transmission/split case fj60 (resealed 2017)
• fj60 disk brake outers
• fj60 dizzy and side cover
• 80 40 windshield frame
• stock fuel tank
• Drive shafts
• 72-74 carb, stock intake, and 6to1 header
• fj60 vavle cover
• Stock gauge cluster
• Stock/80' 40, but modified double roll bar for seat belts
• modified door strikers for 75+ doors


Aftermarket/GM parts
• 4 core brass radiator
• gm alternator
• 70 chevy truck sag pump and homemade mount bracket
• gm duel ratio steering gear( red head steering gear)
• gm brake booster kit(btb products)
• gm rear disk brake kit(trolhole?)
• s10 front calipers on rear(need adjustable proportion vavle)
• 4" lift springs(unknown brand)(rough af)
• seats (dodge caravan)
• lunch box locker in rear end
• 92 s10 steering column
• ez wiring harness(gm style)
• custom front sway bar (jeep tj?)

Compression numbers 1.5f dry/cold
Pre adjustment
1. 135
2. 130
3. 127
4. 125
5. 131
6. 120
Post adjustment
1. 134
2. 130
3. 127
4. 127
5. 130
6. 115
I may not have got the correct lash on 6, but maybe a leak down test will test the other components.

Fuel tank/pump options
• Stock tank+moded intank fuel pump:?
• Stock tank+ External pump:?
• 94 blazer tank rear with pump? Tank $90 + pump
• or both and just use the stock tank as an extra tank and link it to the rear primary tank with switch and/or transfer pump. With a rear fuel cap in the wheel well for emergency access only.
• Downey 22 gal plastic fuel tank+internal pump: ~800+

Just doing some work!!!

 

[jembourbe]

you mean like a 3FE?

a 3F with 'EFI slapped on'

Yea no. He's talking about putting Holley stuff on his junk, not slapping a (nightmare-ish) 3FE system (Toyota product) onto his 2F. And even if he were doing that, it would be the same bastardization comparison as a Chevy V8 versus a V8 from a Sequoia.

 

[knuckle47]

Sorry I came late to this but here’s my story. I come from a long history of kick start motorcycles. Back in 1996 I bought a new fuel injected Harley ultra classic. From days of kicking , priming kicking again and trying to start on some days..that new bike was a press of a button and within 1 second started instantly… holy cow.

‘’my ‘74 FJ40 had the stock carb, then the man-a-fre Rochester, centrifugal advance distributor, headers then the Downey Holley carb and they were all pretty decent carbs. After a near 40 year hiatus I acquired my ‘75 FJ40 with a Weber. They all start the same way….choke, rough starting and the smooths out. There are some really good posts on the Sniper install here and YouTube. They are inspiring so much that I called Mosley…spoke with Rob several times and went in for the in-tank fuel pump, pre-shaped fuel lines and Sniper…

I have since been too busy with building the barn and other things but this December…it’s time. I have read a few stories of problems (many have since been solved) but so many more of amazing success and gratification.

 

[nitroid13]

Sorry I came late to this but here’s my story. I come from a long history of kick start motorcycles. Back in 1996 I bought a new fuel injected Harley ultra classic. From days of kicking , priming kicking again and trying to start on some days..that new bike was a press of a button and within 1 second started instantly… holy cow.

‘’my ‘74 FJ40 had the stock carb, then the man-a-fre Rochester, centrifugal advance distributor, headers then the Downey Holley carb and they were all pretty decent carbs. After a near 40 year hiatus I acquired my ‘75 FJ40 with a Weber. They all start the same way….choke, rough starting and the smooths out. There are some really good posts on the Sniper install here and YouTube. They are inspiring so much that I called Mosley…spoke with Rob several times and went in for the in-tank fuel pump, pre-shaped fuel lines and Sniper…

I have since been too busy with building the barn and other things but this December…it’s time. I have read a few stories of problems (many have since been solved) but so many more of amazing success and gratification.

I actually chose the sniper route and I just got it installed and running well. There were a few hiccups but I got them ironed out. Over all I'm pleased and it runs better than it has in YEARS!!!. I still have a few things to fit and re route but it's definitely coming together.