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View Full Version : 318 heads on my 4.7?


tuned93
01-19-2011, 02:20 PM
so a buddy of mine told me the other day that i could put 318 heads on my 4.7 block. is this true? would it get more power and/or run better?

Stealth Mode
01-19-2011, 02:34 PM
I personally have no clue...

I do have a set of 2000 360 Magnum head's F/S cheap... Which if you can use the 318 head's, you can use the 360.

BAD HABIT
01-19-2011, 02:36 PM
to me it would seem the 360 heads would be way to big, now the 318 heads is a good question....

Stealth Mode
01-19-2011, 02:47 PM
The 318 and the 360 are generally the same head. There were difference's in valve sizing between the Magnum and R/T line's.

I could set a set of 318MAG and 360MAG head's next to each other and you couldn't tell the difference.

Stealth Mode
01-19-2011, 02:49 PM
Hell, if you can use the 318 head's you can use the 3.9 Mag V8 head's too!

The 239ci/318ci/360ci engine's all used the same type of head. The 3.9s had really small CC's but also really small valves'.

Silverbullet08
01-19-2011, 03:46 PM
i would do other supporting mods before heads...

Stealth Mode
01-19-2011, 04:06 PM
Supporting mod's for a head swap are an intake, cam and header's... That's if you're doing some nice aluminum head's or a setup of that nature. Not a set of stocker's that may bump the hp/tq 10-25 and up the compression.

RamSport97
01-19-2011, 10:16 PM
How do you expect to get 318 heads which belong on a pushrod engine, to go on a 4.7l which is a Single overhead cam engine? The 4.7l has two cams (a cam in each head), and 2 timing chains, where the 318 magnum has 1 cam in the block, with push rods to actuate the valves. There are no push rods in a 4.7. There is no possible way that they will fit.

And by the way, 318/360 heads are exactly the same. No difference at all.

BAD HABIT
01-19-2011, 10:35 PM
Very true Patrick I did not catch that earlier.

tuned93
01-20-2011, 08:03 AM
well thats good to know. i had no idea about that. guess im gonna have to school my buddy on this one. thanks ramsport

BAD HABIT
01-20-2011, 08:16 AM
im gonna have to fix that sig for ya...

Stealth Mode
01-20-2011, 10:11 AM
I had no clue they were OHC engine's. I never seen one taken apart before or let alone seen one outta' the hole.

RamSport97
01-20-2011, 01:16 PM
All good.

BAD HABIT
01-20-2011, 04:48 PM
damn patrick nice sig i like the blue in it...sorry ot...

RamSport97
01-20-2011, 05:08 PM
Haha thanks Jay, it's been that way for a while, but i think it was hard to notice with the white background. Definitely digging the new skin.

BIG RED
01-21-2011, 01:58 AM
How do you expect to get 318 heads which belong on a pushrod engine, to go on a 4.7l which is a Single overhead cam engine? The 4.7l has two cams (a cam in each head), and 2 timing chains, where the 318 magnum has 1 cam in the block, with push rods to actuate the valves. There are no push rods in a 4.7. There is no possible way that they will fit.

And by the way, 318/360 heads are exactly the same. No difference at all.

man i like this guy some body who knows what the hell hes talkin abought

RamSport97
01-21-2011, 02:02 AM
man i like this guy some body who knows what the hell hes talkin abought

I like your truck :naughty:

BAD HABIT
01-21-2011, 10:40 AM
Yeah Joey some of us do know a lil bit about our engines, I didn't catch it cause I was at school and didn't really think about it with programming a batch maker on my mind... Besides where you been mr mechanic?

MikeHTally
01-22-2011, 09:24 AM
Hell, if you can use the 318 head's you can use the 3.9 Mag V8 head's too!

The 239ci/318ci/360ci engine's all used the same type of head. The 3.9s had really small CC's but also really small valves'.3.9 V8? The 3.9 is a V6. Guess you could just cap off the two back pistons.