First off, I'm serious about this swap. Any haters that want to tell me not to can move on.
What am I looking at that will need swapped besides the obvious, cooling system, motor mounts/ perches, flywheel.. what about the clutch? Parts numbers come up the same.
Fuel system? I'm probably going to get the 4 hole sploder injectors and go from there depending on tune-ability.
Just an fyi I'm going to be looking for an all ready roller MAF motor, doing some mods and then dropping it in.

 

why not a a 5.8? dont forget ecm. depending on the flywheel diameter you should be ok. although the tranny may not last long. id drop a zf-5 behind it later on.

 

For sure, I wouldn't waste time putting in a 302. Anyway, your clutch will be sized to whatever flywheel you get with the donor motor. My M5's last with not being stupid with the skinny pedal.

Adrianspeeder

 

Why's that Adrian?
1997 Lariat, I will have the wiring and EEC etc from the donor engine.
Why not 5.8? Idk the mods on the 302 are so easy and can pack a snappy little punch, just something to have fun with. I'm open to suggestions for bigger, but for staying for 4.9 not so much, already turned down the cheap low mile MAF 4.9

 

Because I pull 302's to put in 351's to be able to happily turn 33's and 35's without regearing. Any "mods" you want to do with a 302 you can do with a 351.

Adrianspeeder

 

yes, all wiring from the 5.8/5.0. with my experience taking these trucks apart it should be a straight drop in IF you get a motor from the same generation. If you take the 4.9 ECM out and replace it with the 8 cyl ECM you shouldn't have an issue. The ECM is located behind the drivers side kick panel. The motor mounts will need to be changed.

 

Okay engine size out of the question for now, what do I need for the swap since they would use the same stuff basically. What am I forgetting?

 

I've had the ecm out of this truck a couple times, the current one in there is from an unknown brick when mine took a deuce.
I'm going to be taking the engine from a slightly newer truck hopefully, but not OBDII, to keep the retrofit to a minimum. I have to look closer at the truck side of the plugs to see what needs changed from an OBS cab to a brick cab.

 

you'd need to change the hookups to the cab if you were to buy a newer motor. the controls are a round looking hookup on the 87-91 body style, whereas the 92-96 is square. if you lived closer i have a 5.8 out of a 91 that needs valve cover gaskets, and a tune up... Comes with All wiring, ECM ect... lol i think dad was wanting like $150 for it.

 

There's a junkyard not too far from me that a friend goes to for his engine stuff, they let you take a battery and try the engine, test it for oil pressure compression etc before you pull it and then it's less than 300 for everything.

When I get the engine done up it's going to be more uh racetruck than towing and stuff, that's why I thought 302.

 

351 is still a quick revving smallblock... can't make your decision for you, but i'll add something else. the truck dad and i built has a 351 backed up with a zf5 and it will break the tires loose if you are in second and stomp on it... Only things done are an emissions delete and LT's. I have a buddy with the 302 and he let me drive it (he's 15 and im 16) he had me lay into it and im going to tell you it is not as strong as its big brother...

 

Hmph. Maybe because of the lift and planning on wider tires I will try for a 351.
Either way it's getting heads, cam, gt40 upper and lower intake, headers etc etc. ZF5 will be hard to come across, but I could always stock up on m5's and thrash them daily.
One reason I wanted to stay 302 was also for the m5 and my short throw shifter

 

You'll basically have a lightning motor then (minus the heads)! I'm not for sure what they had other than GT40 intake and heads... Like i said, if you find one in your gen it would be better, but if you can't, be ready to do some splicing.

 

Only reason I don't want to start with an 87-91 engine is because 94+ is roller and I'd also like MAF the first time around rather than doing it later. Either way I'm going to be splicing and repinning and whatnot, not a big deal I had planned on that.

A 351 with that stuff would be close to a L motor. Most likely going to use the top end from an early 5.0 sploder and rebuild the heads to take a serious cam. Wonder what kind of power it would make..

 

LOTS!