Rebuilt 302 casting heads available through Rockauto
- Thread starter toolmanmike
- Start date
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Pardon my ignorance, what makes this head desirable
Cuda416
Well-Known Member
I believe it's the chamber. Small and swirly.
nm9stheham
Well-Known Member
The small chambers are a direct way to get higher static CR which is a challenge for most LA 318's. Plus they are closed chambers, so you can get quench/squish benefit with flat top-piston near zero deck.
Cuda416
Well-Known Member
Well, I mean, yeah, that's why I pointed out small and swirly.
Are there any other benefits, like port shape etc? Anyone?
Shows cast numbers
302,646,and 714 on the spec page
302,646,and 714 on the spec page
Well, I mean, yeah, that's why I pointed out small and swirly.
Are there any other benefits, like port shape etc? Anyone?
Bigger ports than the 318s from the 60s-70s. But yet still a 318 casting.
Cuda416
Well-Known Member
Safe to say these would really only be a benefit on a 318 then?
are you sure the ports are bigger? Ones I've seen were the same...
273/318 yes. There have been a few that have put them on 360's but the chambers and ports are too small to be effective.
The ports are almost identical in size to the other 273/318 heads. I think they do flow just a bit better than most of those heads though.
dartfreak75
Restore it, Dont part it!
It's a closed chamber head which can really boost a low cr 318. I cced mine they came out around 64 iirc. The factory 360 596 heads cced at 71-72
dartfreak75
Restore it, Dont part it!
Only one remaining now! Hopefully they got some good cores and these will come back that's a great price for factory heads. But one has to think what kind of cores are they rebuilding?
Here's 3 closed chamber heads. THe nearest is a #302, the middle is the Magnum head and the furthest is a Edelbrock.
They look better machined
You will have to set the 302 heads along side the 60s-70s 318 opened chambered heads and you will see the bigger ports on the 302s. Not bigger like the 340/360 large port heads, but yes bigger than the original 318s.
I have one set of stock take off 302 heads and one new reman set from RockAuto. They both have the better port flow design.
You can read up on this if you do a little digging.
Also the 302s have much larger push rod holes too, very obvious.
714, 646, and 302 castings are all the same heads.
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I would say by all of our FABO members submitting notification interest when the 302 heads become available with RockAuto. They are going into production on them again and will more than likely be available as soon as they are made up.
This is a campaign we started a couple months ago to let RockAuto know we want the 302 heads available again. Good work everyone !!!
It is a first class reman job that they are doing, exceeded my expectations.
Those sure are pretty George.
Our unsung 318s are going to get their day in the Sun now with the Reman 302 Heads coming back on line. Power, Performance and Efficiency !
Pretty you say, Pretty Cool Too !!!
So if I have a stock 67 273 and I put these heads on, approximately what would the final compression ratio be?
It's like 450.00 complete shipped to your door in nice plastice containers, don't have to return any cores either.
A friend of mine sold me all of his small block parts a year or so ago, when he got a hemi cuda.
There was one set of J heads he, at my best caculations milled .125" off of...
I have never used them, but the chambers are small, never CC them. If you notice, the milling was taking the casing numbers off.
Yes he ran them on a radical 318 engine in drag car that he got down to the low 6's in the early 80's, on nitrous.
Everything he ever built for that old duster was low buck, but it stayed together.
There was one set of J heads he, at my best caculations milled .125" off of...
I have never used them, but the chambers are small, never CC them. If you notice, the milling was taking the casing numbers off.
Yes he ran them on a radical 318 engine in drag car that he got down to the low 6's in the early 80's, on nitrous.
Everything he ever built for that old duster was low buck, but it stayed together.
clifftt
Well-Known Member
Just to muddy the waters, this thread ran about a year ago about the 302 vs. The earlier 920 (another closed chamber head).
920 vs. 302 Heads
920 vs. 302 Heads
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