J1MMY
Well-Known Member
Well I’m guessing these aren’t KB167s like the now folklore surrounding this engine once suggested. I’ve done some searching but the eyebrows and centre relief doesn’t match anything…
No that just the basic summary of those 4 400 hp 318 builds.When you said ‘magazine’ I thought I’d put the wrong link!
Your mostly there depending how well your heads are ported.Headers - tick.
Air gap - no problem, will order.
750 - no problem, will order.
Cam - happy to make what I have work
Here's all the 318 plus for the 318 guys
318 Engine Build - A Parts Book 400HP 318 - Mopar Muscle Magazine
Mopar 318 Engine - Car Craft Magazine
Chrysler 318 Engine - Popular Hot Rodding Magazine
318 Small Block Build - How To - Hot Rod Magazine
318 Long Block Bolt Ons - Tech Articles - Mopar Muscle Magazine
https://www.hotrod.com/articles/0901phr-mopar-318-magnum-engine/
https://www.hotrod.com/articles/mopp-0311-318-engine-buildup-and-dyno-test/
How To Install A Hotter Camshaft - Mopar Muscle Magazine
https://www.hotrod.com/articles/mopp-0009-1985-dodge-dart/
Vintage Mopar Power! 550HP Chrysler Poly 318 V8 on the Dyno
318 head porting for the average joe
Porting small block 915 j-heads
Magnum head porting for the beginner
360 Engine Head Porting - Mopar Muscle Magazine
https://www.hotrod.com/articles/mopp-0002-porting-exhaust-smog-heads/
https://www.hotrod.com/articles/mopp-0507-cylinder-head-porting/
https://www.hotrod.com/articles/mopar-small-block-intake-manifold-flow-test/
https://www.hotrod.com/articles/0601em-intake/
https://www.hotrod.com/articles/10-critical-mopar-engine-building-specs/
https://www.hotrod.com/articles/mopp-0309-mopar-engine-rebuild-intro/
https://www.hotrod.com/articles/mopp-0308-adding-magnum-to-a-360-short-block/
Sealed Power. Good slugs. They look real close to zero deck.Well I’m guessing these aren’t KB167s like the now folklore surrounding this engine once suggested. I’ve done some searching but the eyebrows and centre relief doesn’t match anything…
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Well that’s nice to knowSealed Power. Good slugs. They look real close to zero deck.
I am not knowledgeable enough to judge in all honesty and I’ve not seen a set of unported ones up close to be able to compare meaningfully.No that just the basic summary of those 4 400 hp 318 builds.
Your mostly there depending how well your heads are ported.
I was looking at the cost of heads on the Summit app this afternoon. I did notice that Trickflow are quoting higher flow rates than Edelbrock so could be more of a goer straight out of the box?having built the fabled 400hp 318 (twice, natch) your make or break is going to be the heads. to note, that 400 was just barely and everything has to be dress-right-dress to get there. and i honestly don't know if the air gap will do it over the single plane. i can tell you that i took the single plane off and wound up putting on an airgap the second time (it wasn't available the first time i built one) and that made the car much more driveable.
anyway, onto what you've got cooking. if you're not looking to spend a ton of dough or re-engineer the whole enchartio, i'd say you probably have enough cam to get there. those sealed power slugs aren't a bazillion miles in the hole and are up to the task.
so, heads. either you work the F out of your 915's or... flip for some eddy's, speedmaster or trick flow. given your locale i think by the time you splash the pot for some magnum heads you're pounds ahead just biting the bullet and getting something aftermarket that'll support your cam (or the air flow requirement) needed to hit the number without a bunch of additional work.
with that combo, plus an airgap and 750 i say you'll tickle just shy of 400