81 368 carb swap from injection also elderbrock carb/intake

73eldoconvert

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Re: 81 368 carb swap from injection also elderbrock carb/int

That is why I said 26x. I was pretty sure it was not 260 or 265. 262 was in my head, but apparently that was not the chev v8, must have been one of the V8 derived V6's? I don't remember which of those engines I worked on one time but it was sad. Seems like there was more deck area between cylinders than there was bore area and to fit that tiny bore the valves were smaller than my 3.5 Briggs lawn mower. I have never had a 368 that far apart but I assume its the same deal.
 

Monzallac 425

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Re: 81 368 carb swap from injection also elderbrock carb/int

They also made a 262 V8 for the 75-76 Monza also ( 4.3 liter)
262
The 1975–1976 262 was a 262 cu in (4.3 L) 90° pushrod V8 with an iron block and heads. Bore and stroke were 3.67 in (93 mm) by 3.10 in (78.7 mm). Power output for 1975 was 110 hp (82 kW) and 195 lb·ft (264 N·m) at 3600 rpm. The 262 was replaced by the 305 for the 1977 model year.

This was Chevrolet's second 4.3 L-displacement powerplant; three other Chevrolet engines displaced 4.3 L: the Vortec 4300 (a V6 based on the Chevrolet 350, with two cylinders removed), the original 265 V8 in 1955, and a derivative of the GenerationII LT engines known as the L99 (using the 305's 3.736-inch bore, 5.94-inch connecting rods, and a 3-inch crankshaft stroke).

267
The 267 was introduced in 1979 for GM F-Body (Camaro), G-bodies (Chevrolet Monte Carlo, El Camino, and Malibu Classic) and also used on GM B-body cars (Impala and Caprice models). The 267 CID engine had the 350's crankshaft stroke of 3.48" and the smallest bore of any small-block, 3.500 in (88.9 x 88.4 mm). The 3½ in bore was also used on the 200 cu in (3.3 L) V6, which was introduced a year earlier. (The 200 was a Chevrolet V6 engine based on the small block with the #3 and #6 cylinders removed).

It was only available with a Rochester Dualjet 210 – effectively a Rochester Quadrajet with no rear barrels. After 1980, electronic feedback carburetion was used on the 267. The 267 also saw use in 1980 to 1982 Checker Marathons.[12]

While similar in displacement to the other 4.3L(265)–4.4L(267) V8 engines produced by General Motors (including the Oldsmobile 260 and Pontiac 265), the small bore 267 shared no parts with the other engines and was phased out after the 1982 model year due to inability to conform to emission standards. Chevrolet vehicles eventually used the 305 cu in (5.0 L) as their base V8 engine.

Doug in P.R. :quoties:
 

73eldoconvert

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Re: 81 368 carb swap from injection also elderbrock carb/int

There was a guy that used to frequent this board that put the system on the 500 in his Fiero. I don't remember the details but it looked to be a very similar build to the above link. I know he did the stud rockers. I remember helping him find some of the materials and telling him when I saw one in a junkyard because he always seemed to need parts. Last time I saw him and the car in person it was still apart but I have heard he got it running and has occasionally been spotted around town.
 

shiftless

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Re: 81 368 carb swap from injection also elderbrock carb/int

Simon, I would recommend buying the 500 and using that, above all other options. You'd need to track down some 472/500 RWD exhaust manifolds, if it's an Eldorado motor, but that isn't difficult and would be well worth the effort. Would probably cost you $75 - $100 plus shipping. Fitting the 472/500 manifolds in the later cars is simple; you just have to grind off (shorten) a long bolt that sticks out from the suspension on each side. There may be one or two other small clearance issues to resolve but nothing that could not be overcome in a day's work. The outer physical dimensions and mount points of all these motors is the same. I understand gasoline is not cheap in the UK, but the 500 will have close to the same economy as the 368, while putting out far more power. Regardless of what you decide, we will definitely be interested in hearing more about your project and following your progress. Do you have pictures of the car? :listen:
 

johngcarr

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What vehicle(s) do you drive?
1979 Cadillac Phaeton Coupe
Re: 81 368 carb swap from injection also elderbrock carb/int

I have a 368 intake. Factory single plane aluminum
I know this is a very old post, but is there any chance that you still have this intake? :D I'd be interested.
 
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