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'78 302 with 60k miles...

Old 05-21-2008, 05:35 PM
  #1  
coop7
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Default '78 302 with 60k miles...

My boss has an old mercury somethin or another with a 302 in it just sittin in his yard...
He said the body's all rusted out but the engine should be fine with a little work...
He'll give it to me free if i just tow the damn thing off his property...
Is a 302 that old any good?
Thanks,

-Coop
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Old 05-21-2008, 08:05 PM
  #2  
mjr46
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Default RE: '78 302 with 60k miles...

it's nothing special and it's a flat tappet with non h.o firing order so it'd need a h.o firing order on the cam to work in a efi fox...but it'd be a okay motor to put in any carbed stang with the right performance parts added
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Old 05-21-2008, 09:56 PM
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coop7
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Default RE: '78 302 with 60k miles...

Aight cool...
Appreciate the help man...
I joined cause I got a 6erbut I don't know **** bout carbedv8's...
Yeah I know...
hahahaha...
BUT...
In my defenseI AMbuildin a strokedand cammed4.2l from the block up...

But it's fuel injected...
Anythingelse special Ineed to know about the carbed302?
Does it have a compatible stroker kit and forged internals I can get for it?
Help please...
I'm not a noob to the forum...
But I am pretty clueless when it comes to older engines...
[&o]
Thanks again,

-Coop
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Old 05-21-2008, 10:39 PM
  #4  
mjr46
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Default RE: '78 302 with 60k miles...

ORIGINAL: coop7

Aight cool...
Appreciate the help man...
I joined cause I got a 6erbut I don't know **** bout carbedv8's...
Yeah I know...
hahahaha...
BUT...
In my defenseI AMbuildin a strokedand cammed4.2l from the block up...

But it's fuel injected...
Anythingelse special Ineed to know about the carbed302?
Does it have a compatible stroker kit and forged internals I can get for it?
Help please...
I'm not a noob to the forum...
But I am pretty clueless when it comes to older engines...
[&o]
Thanks again,

-Coop
if I were to build a stroker I'd use a roller block and or earlier 70's 302 like 74 and below and you can make a ton of stroker combos but 2 popular ones are 331 and 347
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Old 05-22-2008, 03:31 PM
  #5  
coop7
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Default RE: '78 302 with 60k miles...

Wuts the disadvantage of the flat tappet?
Andwut exactly ish.o firing order?
Wut would be some good mods to do?
Price is an issue,
but I can save...
I'm not in a rush to get it done.
I wanna do it right and I would prefer to do it to it's full potential.
How many horses am I lookin at bein able to safely push out of the block?
Blown or n/a...

-Coop
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Old 05-23-2008, 03:04 AM
  #6  
PJC Racing
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Default RE: '78 302 with 60k miles...

ORIGINAL: coop7

Wuts the disadvantage of the flat tappet?
Andwut exactly ish.o firing order?
Wut would be some good mods to do?
Price is an issue,
but I can save...
I'm not in a rush to get it done.
I wanna do it right and I would prefer to do it to it's full potential.
How many horses am I lookin at bein able to safely push out of the block?
Blown or n/a...

-Coop
The disadvantages of Flat Tappet cams are crappy shaft cores, lack of zinc in oil/assembly lubes now (guards against lobe failure), and the break in process (you can still have shaft failure even when the break in is done correctly)

H.O. firing order is the 351W firing order.

You are always better of with a roller, just like you said save and do it right once.
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Old 05-23-2008, 10:03 AM
  #7  
projectresto83
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Default RE: '78 302 with 60k miles...

I am running a flat tappet motor with a set of 78 heads and it runs pretty good. The compression is lower than a H.O. bc of the bigger combustion chambers and most likly the stock cam has a low lift (below .400). I would rather have a roller motor so I can use a trick flow cam I want. But for now I am just gonna buy a new cam and install my GT40 heads. Then I am gonna do everything the right way when I build my 351w!
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Old 05-23-2008, 11:11 AM
  #8  
stang2race
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Default RE: '78 302 with 60k miles...

Car craft magazine came out with an article about 6 months ago or so on a 78' 302 build up out of a ranchero. And using stock crank, cam, lifters and the smog dog heads built a 250hp engine which is respectable enough to wrap someone around a tree. All they pretty much did was dump all the emmisions b.s.
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Old 05-23-2008, 01:05 PM
  #9  
projectresto83
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Default RE: '78 302 with 60k miles...

Thats one thing I love about carbed motors. They build power very easy with more air and fuel.
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Old 05-23-2008, 06:30 PM
  #10  
coop7
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Default RE: '78 302 with 60k miles...

Aight cool...
Appreciate the help guys...
I like the 5.0 section...
U can ask a question without gettin flamed by 50 ppl...
lol
I'll look into that article...
Thanks again...

-Coop
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