Clifford twin weber kit
Printed From: TheAMCForum.com
Category: The Garage
Forum Name: AMC 6 Cylinder Engine Repair and Modifications
Forum Description: AMC-made I-6 engine mechanical, ignition and fuel from basic repair to high-perf modifications
URL: https://theamcforum.com/forum/forum_posts.asp?TID=89753
Printed Date: Apr/19/2024 at 9:02am
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Topic: Clifford twin weber kit
Posted By: Stormogdis
Subject: Clifford twin weber kit
Date Posted: Sep/13/2017 at 2:29pm
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Think i want to save up for a kit. But do i order for the 258 or 4.0l kit? Is the 4.0l head swap worth the time and dollars? |
Replies:
Posted By: Ollie
Date Posted: Sep/13/2017 at 7:23pm
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Be a VERY BAD mistake to spend money with Clifford. Just my opinion. Having AMC Fun, Ollie ------------- 1966 American Convertible -- "The Rambler"..SOLD 1974 Postal Jeep -- "Rapid Delivery"...SOLD 1969 Rambler 220 post car--"Road Warrior" 1989 Jeep Comanche Pioneer, 4.0L, auto, 2wd |
Posted By: 232jav3sp
Date Posted: Sep/13/2017 at 8:11pm
| While you will get a more even fuel distribution with dual carbs, a single four barrel will make the same power. Getting a nice, used single four and dropping a small 4 barrel on it will work fantastically. |
Posted By: Gelalthedamned
Date Posted: Sep/13/2017 at 8:17pm
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People are boring Get the twins Dual the exhaust Drive it like a hot rod ------------- Calamity - 73 Gremlin X zombie rod (daily driver) |
Posted By: amcfool1
Date Posted: Sep/13/2017 at 10:37pm
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hi, twin Webers would be great, unfortunately there is no proper manifold for them. A forum member here made his own, and it is fantastic, but it is custom. Look closely at the Clifford manifold, it is a twin 4bbl with adapters. Why not try a single Weber 38/38 first? good luck, gz ------------- george z |
Posted By: tyrodtom
Date Posted: Sep/14/2017 at 6:31am
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Every Clifford intake uses a adapter. It's always been the same intakes, with a different adapter plate if you chose to go 2 bbl or 4 bbl, but in this case 2x2bbl, or 2x4bbl. Before you make a decision on buying from Clifford you would be advised to check around on the various forums about their recent reputation. ------------- 66 American SW, 66 American 2dr, 82 J10, 70 Hornet, Pound, Va. |
Posted By: farna
Date Posted: Sep/14/2017 at 6:47am
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Twin carbs will work, and the Clifford intake is as good as any other twin carb intake. Personally, I'd use three sidedraft Webers if I really wanted to be impressive. Look for posts in the six cylinder area by member NOSIGMA. He put three sidedrafts on a 232 in a 65 or so American convertible. Rear carb is tight -- had to make some mods to get an air filter on with power brakes. The Webers in general are really adjustable and work well once tuned. Different than what most are used to. You need a tuning manual and a tuning jet kit, but worth the effort according to everyone I've talked to (I haven't done it myself). TomJ on here has done it and praises the Webers. Moneywise, you'd be better off with a single four. The Clifford and the Offenhauser intakes are great. I'd use an Offy Dual Port for street performance and a 390-450 cfm carb (390 for stock or mild cam, 450 for a bit more cam, and even a 500-600 for a race motor). A pair of the smallest Motorcraft 2100s might be good, but the Webers would probably be a better choice. Use a pair of 32/36, maybe? Two 38s will probably be a bit large unless it's a full on race motor. A single 38 is a good performance choice for a mild 258. Weber says the 32/36 will increase performance on the 258, but that's when replacing the 1V carb. A pair ought to be nice! ------------- Frank Swygert |
Posted By: Stormogdis
Date Posted: Sep/14/2017 at 10:45am
Thanx for all the replays  I want a car thats a little more funn to drive.. so i want a little more hp and torque 
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Posted By: Kensey
Date Posted: Sep/14/2017 at 4:50pm
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How hard are the 4bbl intakes to find? And are they a direct bold on for an early 70's 258? ------------- Gremmy Power!!! |
Posted By: 232jav3sp
Date Posted: Sep/15/2017 at 9:17pm
They are readily available; new or used.
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Kensey wrote:Posted By: farna
Date Posted: Sep/16/2017 at 11:22am
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The intakes bolt on, but you might need to modify it or use a header, which is costly for a pre 80 engine. Offy still makes a DP intake that will bolt to the stock exhaust manifold. Most you will find are 1980+ and won't work with the early (pre 80) exhaust manifold that bolts to the intake. You can use a 1981-89 258 (4.2L) Jeep exhaust manifold on the earlier head though. That's a much less costly solution than a header. While a 4.0L head won't do a lot by itself, if you really want a header and you have a plastic valve cover 258 and want to get rid of that plastic cover too, get a used 4.0L head, factory header, and valve cover. Not hard to fit to the older engine head. Lots of articles on 4.0L head swaps. You can use a 1981-89 2V intake or any of the aftermarket 4V intakes on a 4.0L head easily. The head/exhaust/VC from a junkyard will be no more than a header alone (new) for the 258... and maybe even if the head needs rebuilding. I'd get a head while I could -- stopped making the 4.0L in 2006, so they will start drying up in junkyards over the next 5-10 years, pretty easy to find now. ------------- Frank Swygert |