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Dec 2, 2006 | 02:00 PM

lwhitcomb

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From: Tigard, Oregon

302/5.0 Build

I want to build a Hi-performance 302 and I have been told that the HO from a '86 - '92 Mustang is a great block to start with.

I want to pull the engine myself from a local junkyard.

Can some one tell me...

Do I want one that has knock-sensor?

Are there different firing orders?

Did the same engine come in other cars/trucks/vans (other than 'stang)?

What engine code(s) would I look for?

Thanks for your help!

Ladd

Dec 2, 2006 | 07:24 PM

baddad457

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From: south louisiana

All the roller blocks from 86 to 97 are basically the same. The Stang HO motor used ther same blocks the others did. Don't go out of your way for one. The Stang, pickup and vans all used the same heads, crank, rods. The 86-91 Crown Vic, Lincoln Town Cars, and Marquis used the same heads the 86 Stang motor did. Ditto for the T-Bird/Cougar till about 90 or 91 when they swapped to the heads, the 87-up Stang/pickup/vans used. The 87-91 Lincoln Mark VII also came with the same HO motor the Stangs had. Firing order depnds on the cam you use. No difference in the crank.

Dec 2, 2006 | 09:22 PM

lwhitcomb

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From: Tigard, Oregon

Thank you for the information! That's exactly what I was looking for.

So if I am stripping the engine down to the block and building it back up with all aftermarket parts I can pull the motor from any of the vehicles you listed above and I will end up with the exact same block?

Thanks,
Ladd

Dec 3, 2006 | 07:39 AM

baddad457

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From: south louisiana

yea, pretty much. There are several roller block castings, the earliest one is the one to avoid if you can. The 87-up castings have more metal in the bore bottoms and decks, look for E7TE, E6SE, and there's another, 90's casting, but I din't recall the numbers. The E5AE block is the earliest one with less metal. As for your question about the knock sensor, if you're going carbed, you don't need it. The sensor screwed into the block just behind the intake.

Dec 3, 2006 | 08:56 AM

P51D Mustang

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Most EEC IV EFI 5.0 motors, including the HO's through 95, didn't use a knock sensor.

Dec 3, 2006 | 04:27 PM

lwhitcomb

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From: Tigard, Oregon

1986-92 302
5.0
4.00
V-8 E.F.I., Roller Tappets 302 Firing Order, W/Detonation Sensor E6SE-BA E5AE-C3B E7TE-CA E7TE-EA

1987-92 302
5.0
4.00
V-8 H.O., Roller Tappets, 351W Firning Order, 13726548, W/Detonation Sensor E7TE-CA E7TE-EA

The ones I'm finding (above) show that they have the knock sensor. If I am going with EFI should I make sure that I get one with a knock sensor or does it not matter that much?

Can I use ANY 302 block or should I get EFI if i will end up using EFI in the build?

Thanks,
Ladd

Dec 3, 2006 | 06:15 PM

baddad457

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From: south louisiana

If you're shopping factory reman 302/5.0's, and are going to use the shortblock as is, the one to get is a 94-97 5.0 for an E or F150/250. These have a hotter roller cam grind than the earlier ones. If you're going to install EFI and have a choice, the Knock sensor is a good idea. A computer set up with it can tailor the ignition advance to run it right on the edge using whatever fuel you choose to use. In other words, it will make the most of the available fuel and make the most power with that fuel.

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Dec 7, 2006 | 03:14 AM

lwhitcomb

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From: Tigard, Oregon

You are going to say that I am sacreligious, but I am putting it into a 1982 Celica GT, along with a Tremec T-56, and a 9" rearend geared 4.86 or maybe even a bit lower.

Dec 7, 2006 | 03:59 AM

#10

darrin1999

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From: fargo, nd

since the car is carbed id use a newer block with a carb top end... but then i hate redoing wiring harnesses... if you dont mind wiring everything then efi would be the way to go... but the thing i like about a carb is it doesnt care about mods... you can do whatever mods you want and itll still work fine- maybe a jet change but thats about it

Dec 7, 2006 | 10:25 PM

#11

lwhitcomb

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From: Tigard, Oregon

I'm gutting the Celica. I am going with EFI and am going to use a programable chip. Most likely I will use the computer out of a Mustang. Any thoughts on that?

Dec 7, 2006 | 11:16 PM

#12

darrin1999

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From: fargo, nd

i think if you have to use a 302 block you should go to a 347 stroker... or just go get a 351w block- more cubes for better power... the mustang computer is a good idea as long as its the mass air one- way easier to tune

Dec 8, 2006 | 05:21 PM

#13

lwhitcomb

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From: Tigard, Oregon

Yes, I am planning on stroking it to 347. I'm sticking with the 302 because the 351 is a couple inches wider and I think a little taller. I am going with 335 30 18's and will need as much width as I can get. I am fabbing fender flares that look like the GT-S but wider, I just don't want to overdo it. I'm going to try to keep it under the hood as well. I am toying with putting a twin-screw blower on it at a later date, and then I will almost definately not be able to keep it under the hood. Maybe a low-key scoop and/or some discrete mods to the hood.

Thanks for the info about the computer. How do I know which is the mass air one?

Thanks for your help,
Ladd