Stop in for a cup of coffee

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I don't know about that. It could be made to be efficient. If it is, not by much!
actually, its quite substantial. Head flow stock for stock features a huge advantage to the poly over the LA. In stock form, they flow over 220 cfm, ported, they can reach 300 cfm. with the port spacing and heights to have a good to great velocity as well. compare that to a stock 318 LA head that maybe 150 cfm max out of stock, 302 style LA heads, 135 cfm out of other swirl port heads. For comparison, a Eddy Victor set of LA heads flow 295 fully ported and polished per Hughes Engines.
 
the cool thing about the poly was that it was really supported in the late 50s as a go fast engine, until the Hemi came along and spanked it, plus cost cutting. The factory had a 2 barrel intake, 4 barrel intake, dual quad and a 6 pack intake, all offered from the factory from 1958-1960. What was weird is the cams stayed the same regardless of intake choice
 
actually, its quite substantial. Head flow stock for stock features a huge advantage to the poly over the LA. In stock form, they flow over 220 cfm, ported, they can reach 300 cfm. with the port spacing and heights to have a good to great velocity as well. compare that to a stock 318 LA head that maybe 150 cfm max out of stock, 302 style LA heads, 135 cfm out of other swirl port heads. For comparison, a Eddy Victor set of LA heads flow 295 fully ported and polished per Hughes Engines.
They should be easy to port with the valve angle and layout. I think the biggest downfall with the LA heads is the shared/dual ports and the pushrod pinch.
 
yep, that's what's keeping me from doing it. However, I'm fully set up to setup to a big block pushbutton set up in a matter of hours if I wanted. Personally, I kind of enjoy the WTF is that look I get when people see those scaolloped valve covers.

There's the little B Block option too for the :wtf: effect. Friend had a Fury with a 361. He would put a $20 bill on the dash board and tell the disbelievers to "grab it if you can" and then nail it. He didn't lose a 20 that I know of :lol:
 
There's the little B Block option too for the :wtf: effect. Friend had a Fury with a 361. He would put a $20 bill on the dash board and tell the disbelievers to "grab it if you can" and then nail it. He didn't lose a 20 that I know of :lol:
Someone put a 361 in this car. I added headers, intake, carb and ignition. It ran pretty good.

My 69 coronet 1a (2).jpg
 
They should be easy to port with the valve angle and layout. I think the biggest downfall with the LA heads is the shared/dual ports and the pushrod pinch.
yeah. the other thing, the runner and port lengths are exactly the same on the poly
There's the little B Block option too for the :wtf: effect. Friend had a Fury with a 361. He would put a $20 bill on the dash board and tell the disbelievers to "grab it if you can" and then nail it. He didn't lose a 20 that I know of :lol:
I have a 383 as well. its stuck but has 13:1 pistons haha.
 
I agree with the poly getting better mpg, all three that I owned as daily drivers in the '80's did, and I even remember as a kid, a friend of my Dad's who owned one said the same thing.
 
I agree with the poly getting better mpg, all three that I owned as daily drivers in the '80's did, and I even remember as a kid, a friend of my Dad's who owned one said the same thing.
How much difference? My LA teen gets 20/hwy.
 
How much difference? My LA teen gets 20/hwy.

17mpg for the '72 was the number I used to track my fuel usage since the gas gauge would not function :lol:. Most of that was just goofin' off around town. When it was the daily driver, trip to work was country roads and not real good for fuel efficiency :lol:
 
Thats purty. And the valve covers wont leak.
speaking of leaks, I've let that RTV on the intake manifold gasket cure now for 10 days, think it'll be ready to top the radiator off and look for leaks?
 
Coffee. Good.
Warming up the f150,back it in and pull diff apart. See whats causing the 60 mph howl.

customer caught a glimpse of my
Ethyl gas pump signs, offered me cash. I declined, might stick one on the fargo near the filler neck..
 
speaking of leaks, I've let that RTV on the intake manifold gasket cure now for 10 days, think it'll be ready to top the radiator off and look for leaks?
It wont cure any more after 24 hours. Rtv is room temperature vulcanizing.
I would
216191E0-C1BB-4CF3-AEA0-D377AD475295.png
 
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