1985 302 Ho motor?

[heeno]

Hello all,
I've been trying to id the 302 which I have in my 66 mustang which is not original to the car. What I have so far is a block with starting number EOAE D3C 20 located next to starter motor. I think this the code for all blocks from 80-85. The heads on the outside of the motor have stamped 61 on the front and 45 on the back. On the inside of the head theres a plate which reads 3K14 which I think indicates cast in 14 Dec 83. The firing order is different to the old 66 and most earlier windsor engines for that matter. The firing order is stated as that being the one for the 302 ho motor which came out in 1985 and the 351 windsor. I have 14 mm plugs which sit on an angle. It has a edelbrock manifold with a 600 holley (which I put on) to replace a 750 holley that was on there, way too big. The rocker covers which were on there when I bought the car were finned and had powered by ford stamped on them which had a 1985 year stamped on the inside. So its a bit of mystery to me this one. Hoping that I don't have the dreaded 255 motor that Ford doesn't like to talk too much about. 

[R_Beckhaus]

Is it a roller cam? My '68 has a 5.0 roller cam ho moter which has a windsor block, and a cleveland firing order,because, I was told, it has cleveland heads. Perhaps this is what you have. I cannot access my car to check casting numbers as it is away for electrical work for a few weeks. Mine is supposedly late 80's. A real sweet motor.
Cheers, Ron B

[GLENN 70]

The later 5.0 engines changed to the 351 firing order ,smoother .  Ron Beckhaus  yours might have Cleveland heads but I wouldn't think so .  How many bolts holding on the valve covers ? .

[R_Beckhaus]

Perhaps I was drawing a conclusion that was unintended by my mechanic, and just assuming Cleveland heads were fitted because of the firing order. The Rockers are the  chrome ones off my old 302W. Probably my mistake, so I thank you Glenn for saving me from making a possibly embarrassing error later. My apologies if I have inadvertently mislead anyone
Cheers, Ron B

[BJs Snake]

Standard firing order on 5.0L, 351 firing order on 5.0L HO.
Nice little motor they are. 

[GLENN 70]

Your mechanic  knows 351C firing order is  13726548 and 289 and early 302W is 15426378  so he thought it must have had Cleveland heads ,not knowing 351W and later 302/5.0 share the same firing order as 302C and 351C engines . Too easy 

[heeno]

Thx Chaps for those quick responses. Firing order is definitely 13726548 and yes 6 bolts for the tappet covers. Definitely Windsor heads. The Roller cam bit is interesting. I wonder if you tell from looking at the tappets? 

[boofhead]

Some of the roller blocks had a flat tappet cam installed - in those cases the spider attachment holes may not be drilled and tapped though the casting bump for the spider attachment points will be present. If you have the 13 firing order then it will highly likely be a roller Cam (though might have linked bar lifters as installed by a PO).
 
It is easy to identify which setup it is with a quick look under the intake manifold looking at the lifter gallery.

[heeno]

Thx Boof for that handy info. I did take a few shots of everything when I had the tappet covers off. Sounds like I have to get underneath. The numbers 61 which is stamped on the front corner with 45 on the rear corner. Do you know what that might be all about. This might sound goofy but port sizing perhaps?

[shaunp]

Some of the roller blocks had a flat tappet cam installed - in those cases the spider attachment holes may not be drilled and tapped though the casting bump for the spider attachment points will be present. If you have the 13 firing order then it will highly likely be a roller Cam (though might have linked bar lifters as installed by a PO).
 
It is easy to identify which setup it is with a quick look under the intake manifold looking at the lifter gallery.

Yep the truck ones had flat tappets in a roller block early on ,so F100, Bronco Eccoline etc but till had 351 fireing order which is better, it takes some load off the front main bearing as with the old 289/302 order 2 cylinders fire on the front bearing simultaneously.

[barnett468]

,
push rod length for a stock 93 roller engine is 6.250 . . just measure them . . non roller push rods will be 6.886.

do i get a prize now...like maybe a cold tasty...Fosters Lager?