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Classic Mustangs Talk General Discussions

General discussions specific to 1964-1967, 1968-1970, and 1971-1973 Classic Mustangs. Discuss all non-technical topics related Vintage Mustangs here.

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Unread 12-20-2003   #1 (permalink)
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Default difference between a 302 &302 HO?

I am fairly new to this site, and first thing first, I want to thank all of you for your valuable informations. It sure made my life a lot easier. I just got a 65 COUPE through EBAYmotors and I think it has a 302 engine, according to the ad. Is there a diffrence between a 302 and a 302 HO? where is the VIN and casting number on the engine The cae has two different VIN numbers one on the driver's side door and the other in front of the shock tower on the driver's side

ALL HELP NEEDED!!
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Unread 12-20-2003   #2 (permalink)
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ok, the 302 came out in 68, and the H.O. is basically, a higher output 302 (started in 82 I think for the 302, 72 for the 351).

As for your vin, pull off the door tag and throw it away. Some rookie cop might arrest you for a stolen car from that VIN, even though it says not for legal purposes on the tag. The VIN on the fender apron is the one for the car, if it isnt, the one on the paperwork, take the car back.
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Unread 12-20-2003   #3 (permalink)
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Quote:
Originally posted by Twister
ok, the 302 came out in 68, and the H.O. is basically, a higher output 302 (started in 82 I think for the 302, 72 for the 351).

As for your vin, pull off the door tag and throw it away. Some rookie cop might arrest you for a stolen car from that VIN, even though it says not for legal purposes on the tag. The VIN on the fender apron is the one for the car, if it isnt, the one on the paperwork, take the car back.
TWISTER, thanks for the info. The one on the front apron is the one on the tiltle. Where is the casting number on a 302 engine? Can I convert it a regular 302 to 302 H.O? if so, how do I go by doing so? What do I need ? Is there a special kit?
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Unread 12-20-2003   #4 (permalink)
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How can I tell wich engine I have on my car? where is the casting number located on the engine.
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Unread 12-20-2003   #5 (permalink)
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I'M SORRY. I feel that I should apologize for asking so many questions. You see, I am not sure of the type of engine it has. The car was advertised as a 302 but I am not sure . I think I got a raw deal.
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Unread 12-20-2003   #6 (permalink)
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the casting number will be located on the block above the starter. H.O. blocks for the earlier 302's are the same as the standard 302, however the 85+ H.O. used a roller cam, and the easiest way to tell if it is one is to pull the intake off and look at the lifters. As for the difference, it is mainly cam and heads (I assume you have a carb so I am not going to mention the EFI difference)

What are the casting numbers on your block? here is a shot of my 86's orrigional H.O. block's oil gally (I am NOT going to lift the engine out of my workbench) Note the XXX on the block, that shows that it has a roller cam
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Unread 12-20-2003   #7 (permalink)
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here is a casting number on the head, it is only visible if you remove the heads. I am not sure wht the 82-84 and 85 casting numbers are, but the 86 is E6SE and the 87-95 is E7TE. This head is a cast iron GT40 head that was used on 93-95 Cobra's
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Unread 12-20-2003   #8 (permalink)
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one last question, what are the first 5 digits of your VIN?
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Unread 12-20-2003   #9 (permalink)
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Quote:
Originally posted by Twister
one last question, what are the first 5 digits of your VIN?
5R07C129551
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Unread 12-20-2003   #10 (permalink)
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wow, you have a California car that orrigonally had a 289 with a 2 barrell
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Unread 01-20-2004   #11 (permalink)
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302 HO are those engines also designated 5.0L HO, used in Mustangs '87 to '95. The main differences are the heads, cam, and roller lifters. In comparing these engines to earlier 302 engines you'll find the following:

Lifter bosses in the engine valleys are taller owing to the fact the lifter bodies are taller. The cylinder skirts are longer to reduce piston slap. The heads are lower compression with higher air flow (bigger valves, bigger combustion chamber). The internal balance is changed to 50 oz-in and the firing order is 351w firing order. Thus, the harmonic balancer and flywheel used have to match, i.e. be 50 oz-in units.

Its possible to bring a 289/early 302 into close configuration but generally its not worth the bother. There's enough aftermarket speed shop items for any Ford small block engine so that any of them can be made about equal in performance.
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Unread 01-20-2004   #12 (permalink)
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THANK YOU JEFF65, I JUST WENT THROUGH YOUR GALLERY AND I MUST SAY THAT IS A WORK OF ART( YOUR ENGINE). ANY SUGGESTION AS TO GET MY 302 TO LOOK SOMEWHAT SIMILAR TO YOURS? I MEAN THE ENTIRE ENGINE COMPARTEMENT.
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Unread 01-27-2004   #13 (permalink)
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My car is a frequent trophy winner and the engine compartment is one of the reasons. While restoring the car I made several decisions about how the engine compartment should look:

Even though I was installing a 5.0L roller engine, I wanted it to have a "stock" look as if Ford built it on an assembly line. Thus:

a. engine color needed to be original (black).
b. hoses and wiring needed to be black.
c. engine compartment needed to be black.
d. all wiring needed to be removed and re-taped (black).

I wanted chrome to accent the black components. So I:

d. installed chrome air cleaner, polished carb, and polished aluminum valve covers.

e. installed ceramic silver covered headers.

The idea is to have a consistent appearance throughout...make everything match or contrast. I kept the colors down to three colors except for wiring. The three were black, silver (chrome) and red. Note: Red was a concession to Mallory whose distributors are always red. I used a red Mallory distributor and Mallory wiring.

Might add one last thing: detail is important, so all fasteners need to be correctly installed. Ex: if a bolt needs a washer, then the washer must be used; if a wire needs a clip, then it must be clipped in place. Don't shortcut anything...only pennies separate the trophy winner from the trophy loser. Like an artist doing a painting, you want everything right!
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