91 f150 302 same as 94 f150 302?

[MotoSook]

I am not a Ford guy, but I know there are some here. I've got a line on a new long block 302 from Ford that has been sitting for a couple of years. It has supposively been oiled and rotated, and the seller wants $375 for it.

My beater F150 has 126K miles and is burning oil. Will this 91 F150 302 be a direct swap with my 94 F150 302?


The F150 forum is a little dead compared to here.

[willtel]

It should be the same. The induction systems were changing during that time but I think all the trucks got the high-rise intake anyway so even that shouldn't matter.

[fastfredracing]

My interchange shows different part #'s, but I would think that it would drop right in. A local salvage yard would be able to tell you if it will interchange

[MotoSook]

Sounds good guys. Thanks. I'll be swapping induction and ancIllary from the old ock to the new block so it should work if the blocks are identical.

I'll call the local salvage yard too.
Thanks!

[MotoSook]

Fastred: the casting ID on the '91 long block is E7TE CA. Any information you can provide with that number?

[lm6y]

Salvage yards probably will be no help. If it is not a direct drop in swap, the interchange will say they are different. For insatnce, on a 4.3 Chevy, one year doesn't use a knock sensor, and the next year does. Since the boss isn't tapped, Interchange kicks it out, and doesn't say why.

[MotoSook]

I guess I'll need to study up on 302s. With the change from carburetors to EFI (between the two model years), I may have some slight variation to deal with.

[VINMAN]

Will drop in with no problem. Same exact engine.

[MotoSook]

Originally Posted by VINMAN

Will drop in with no problem. Same exact engine.

Vin - no issues with EFI ancillary device mounting (eg. sensors for crank timing etc)?

Like I posted earlier, I would stripe everything off the old engine and install it on the new long block. I figure this would be better than rebuilding the old engine. The long block would cost me $375, but rebuilding the old block would likely cost me more in parts and machining.

[fastfredracing]

O.K. I got the lowdown. I stand corrected, 88-93, and 94 and up have a bunch of differences.Block and heads are basically the same, but you have to swap over a ton of stuff, camshaft, timing cover , upper and lower intakes. possibly some engine tin. etc etc etc. . I think the firing order is different, and you will need the older cam to drive your mechanical fuel pump if you are still carbureted. Still 375 is a good deal for a short block and it is an old style american v8 . Probably take me a day to change over all of that stuff. If you have two engine stands you can steal from one motor, while you build the other. Doable, but adds to the project a little.
My guy said that the 88-93's are getting a little harder to come by these days.

[Jim Bremner]

It should be the same. Try to find a Ford parts guy and check the camshaft #'s

There's two firing orders for ford small blocks. The first is the "302" order, the second is "351" order BUT 351 order has been used on a 302. It should work but if the second 302 motor has the 351 order you might need to change the cam or the computer.

Right now would be a great time to just swap in a 351 motor. The mounting points are the same. You'll need to add some lenght to the header of your tailpipes since the 351's exhaust ports will sit 1" higher.

Both 302 & 351 share the same 4" bore the 302 crank is 3" and the 351 is 3.47"

There's stroker kits for the 351 that use the 302 pistons with new rods and crank that bring the stroke to 3.87? for a 390 ish motor.

Worthless facts is that a chevy 350 and a ford 351 are both the same bore and stroke and they're really 347's

[MotoSook]

Thanks guys.

I'll check on the cams and firing order. That sounds like the big difference.

My plan on the swap is to get the longblock on a stand and move parts from the old engine to the new engine until I have a block sitting in the engine bay. I'll then pull the old block out and put the new assembled block into place. Should be a weekend's worth of work if I run into fastener issues (i.e. rust slowing me down...but I have a blue wrench).

Jim: Although it would be fun to have the 351 in there, this is my $1000 beater truck that I use to go out to construction sites and will be for general "throw it in the bed and let's go" truck. 1/2 the metal thickness on the frame/suspension is rusted-flaked away. I'll probably have to replace those next summer just to keep it on the road. The PO replaced some of the suspension mounts and gave me some other parts he didn't install. The fenders..what fenders? and wheel arched are nice rust color where it's not invisible. The chrome wheel arch trim is the only reminder of what the fenders actually looked like.

It's a beater/work truck. I will do the minimum to keep it serviceable so I have something to run tot he landscape supply place, the lumber yard, the dump...etc.

I love it! aS BEAT UP AS IT IS i LOVE IT. I don't worry about dents or dirt or bugs on it...it's liberating. I save the anal retentive ways for my other vehicles. As bad as it is with the oil burning, it starts everytime, it has plenty of power and even without snow tires, I haven't been stuck in the worst of snow this year. I love the LSD and 300lbs of weight in the back.

It gets 12 miles to the gallon, but I'll only use it 10% or less of the time. I have several other vehicles to choose from for the other 90%.

Everyone should get a beater truck!

[VINMAN]

The 91 is an EFI correct? Everything on that motor will bolt right up to a '94 block.

[MotoSook]

I thought 91 was still carbureted.

Will keep learning.

[m21sniper]

The 5.0 was injected from 86 on IIRC.

$375.00 is a fantastic price for a longblock in new/rebuilt condition.

[MotoSook]

Someone posted this on WikiAnswer for a 1990 302:

http://wiki.answers.com/Q/What_is_the_firing_order_for_a_1990_Ford_302

The rotor turns counterclockwise and the order depends on if you have an engine with a roller cam or a flat tappet cam. If it is a flat tappet cam, it is 1-5-4-2-6-3-7-8. If you have a roller cam, it is 1-3-7-2-6-5-4-8. You will either have an H.O. motor or not. H.O. is roller motor.

So at the very least I need to confirm firing order.

[lm6y]

OR a Non Roller cam 302 can have a 351 NON roller cam in it. It makes a little more power, but runs a little rougher. Most carbureted Boat 302's use a 351 cam, and the cam will determine the firing order. So you really need to know what cam you have. They also could have changed cams from 91 to 94, and could possibly give you a computer nightmare. Or the damned thing could just bolt right in and fly from the get-go. I hope it's the last one!

[MotoSook]

I'll just have to turn the engine over and see the firing order. Thanks guys. Wish me luck.

[VINMAN]

Souk, either of those motors will have a roller cam. Ford stopped using flat hydro lifters back in the mid eighties

[m21sniper]

Right again. I believe 86+ 5.0's all have roller cams. My 89 Cougar XR7 LO did. I later replaced it with a 92 5.0 HO that also had a roller cam.