hard combo to beat!
This again.... 4bbl on a 318 with a 2bbl
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How come the pistons have to be flat tops? I'd say that you have tons of experience and knowledge.
Because that is the way they came on the later years of
318s. I tried for years to get NHRA to supersede them to
them to the earlier years with the notches = They stated no dice!
Unfortunately all the years of 318s with the notch on came with 2 brl.
carbs.
318s. I tried for years to get NHRA to supersede them to
them to the earlier years with the notches = They stated no dice!
Unfortunately all the years of 318s with the notch on came with 2 brl.
carbs.
430 to 440 will get it done if you have a decent torque curve andHow
optimal everything else. Just the Pro Trans and converter alone are
$10,000 plus.
However, I am pushing 80 and I have never seen a U Haul trailer on
the back of a Hearse. In Heaven the streets are paved with Gold and
I will not need to funds to buy anything~
Pushing 80 and still turning wrenches, that's awesome. I figured that you would have to run a stock transmission and convertor
Brings up a question
I have a standard performer, not air gap or rpm, anything like that. It has a factory style choke well on it. Can I run a TQ. With a factory choke on the performer?
i think so. if anything you *might* need to tweak the choke rod for distance/clearance, but i doubt it.
Dartswinger70
Well-Known Member
In terms of the 1970s LA? the cam. Not so much that it would run like crap there just wouldnt be much of a performance gain. I could see doing it though especially if the 2 barrel was just worn out . Id even run a small 4 barrel maybe smaller than 600 CFM.
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The cam in my 56 Plymouth 277 only has .380 lift, same as the 2 barrel 277. CR is only 8 to 1. A hi-po 273 does have a higher CR than a 2-barrel 273, but only has a 248 degree cam
Chevy and Ford small motors ( 265/283, the Ford Y blocks and the early 260/289s) all had mild cams.
All manufacturers optionally offered 4-barrel carbs on these mild cammed small motors.
No, a four barrel alone won't make a 318 a hot rod, but there would be a definite 15-25 hp performance improvement. Whether you think that's worth doing is something you would have to decide.
Like in all the 318 hop up threads, A 4 barrel, a proper distributor advance curve, and dual exhaust are the first 3 things to do before a cam and headers. You may be so pleased with the performance there will be no need to go any further. Then comes a converter and rear gears. A little compression can help with performance any time along the way, but pistons or cylinder heads are needed for that. I could go on with that subject but we don't need to go there in a 2-4 barrel thread.
That '87 Pickup Carbureted 318 should be the roller cam engine. Already set up with the fuel pump and eccentric in the timing chain cover.
9.2:1 cr with flat top pistons .040 ths down in the hole, with the 302 closed chamber heads and roller cam valve train. Factory 230 hp engine, and that's with the 2 bbl.
Those factory roller cams do great for low end torque after adding the 4 bbl, and they won't float the valves on the upper rpm range with the roller valve train and factory roller valve springs.
Just needs some more fuel.
Then the whole tone of the engine deepens with a nice tone out the single 2.5" exhaust pipe too.
Big large port cast iron exhaust manifolds (same exhaust manifolds as used on the 360 truck engines), so it will breathe good non-restricted.
.
PRH
Well-Known Member
it would make for a relatively low effort dyno test.
Stock 2bbl 318 with manifolds and single exhaust.
Add dual exhaust
Add 4bbl using adapter
Swap to std performer
Add headers
Stock 2bbl 318 with manifolds and single exhaust.
Add dual exhaust
Add 4bbl using adapter
Swap to std performer
Add headers
MobileCustoms
You can twist perceptions, reality won't budge
Not to hijack this thread, but I believe in '87, the pickups were still the LA engine, from what I've researched. A whopping 150hp with the 318 2 barrel.
Dartswinger70
Well-Known Member
Stock LA 318 cam lobe luft is like .373/.400 or something like that. The stock 318 works well for what it was intended
Professor Fate
Push the button, Max...
Truck LAs '88 through '91 (318) and '92 (360) were roller-cammed LAs with TBI injection until '91/'92 after which they were superseded by the Magnum series.
Passenger car carbureted 318s got roller cams even earlier, like in '85/'86 ish. Some of the roller 318s may have found their way into light-duty pickups in that time, but the 360 remained SFT in the pickups until '88.
As always people will claim exceptions, which Ma Mopar was really good at.
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Just for a sidenote, I had a 89 Dodge van with a 360 TBI that was roller cam.
Professor Fate
Push the button, Max...
Yeah, I generally include vans under the "truck" category.
And yeah, '92/'93 for Magnums- my brain (what little is left of it) was thinking "last years of LAs" but typed to sound like first year of Magnums... I clarified my post. Thanks.
All the Performer intakes I've seen are square bore.
Did they make a spread bore version?
TQ has way too big secondary bores to fit on a square bore flange.
Professor Fate
Push the button, Max...
abcdefghii
Member
I swear, Craigslist search is designed to make me get excited about something and then instant disappointment.
Searching for Edelbrock 2176, zero local results but here are some from nearby. Literally only 1, but it looks in great condition and is $150 or best offer.
Look up the location, almost 500 miles away.
Yeah, that's not exactly local and a bit far to drive.
Searching for Edelbrock 2176, zero local results but here are some from nearby. Literally only 1, but it looks in great condition and is $150 or best offer.
Look up the location, almost 500 miles away.
Yeah, that's not exactly local and a bit far to drive.
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With the stock cam, the SP2P with a 650 AVS2 is a really happy combination on a stock early eighties 318 truck.
I would work that plenum and leave the "dividers" exposed below the mounting flange. [edit] I'm referring to the Street Master single plane. My apologies.
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Part number please?
Professor Fate
Push the button, Max...
performer RPM is square, the standard performer is spread.
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