Hello all! I just aquired a '83 Ram 150 custom, slant 6, 4 spd manual trans. After driving this truck I've decided the 1 bbl carb has to go. I think if I put a 2 bbl carb/intake on it should make it a little more "driveable."
It will definitely do that. A deeper (numerically higher) rear axle ratio will also be a very large help. But before you make any engine mods -- does this truck have to pass an exhaust emission test? Where are you located?
What intake/carb applications fit this engine?
All slant-6 manifolds fit all slant-6 engines. The manifold you want is the *IRON* 2bbl intake found in North America on '76-'80 cars and trucks with the "Super Six" engine. Take a magnet with you to make certain the intake you get is iron and not aluminum; the aluminum ones were hideously prone to leakage not only due to warping but also *through* the castings and sloppy EB welds, which were porous.
Your conversion is simplified by the manual transmission; you won't need to futz with kickdown linkage. Here is your shopping list:
Intake manifold (may as well get the exhaust, too, as a spare, if it's not cracked)
Carburetor (Carter BBD 2bbl)
Choke thermostat (bolted to number-5 exhaust manifold runner -- different for 2bbl)
Air cleaner
Throttle cable (shorter than 1bbl -- a V8 truck cable may work)
Throttle cable bracket (bolted to exhaust manifold)
Throttle return spring bracket (bolted to intake manifold)
You'll want to go through the carburetor and rebuild it -- they're not hard to rework with a quality kit.
The truck doesn't have A/C. The "Lean Burn" system has been bypassed, so it has just standard electronic ignition.
Guess this answers the smog check question with a "No"! Check and see which distributor is installed -- if they just yanked the lean burn and left the LB distributor in place, you'll pick up a great deal of driveability and performance with a thoughtfully-selected distributor such as the 3755042 units regularly sold on Ebay.
There are all kinds of other ways to spend money wisely (camshaft, clutch fan, Dutra Duals, for example) and foolishly (4bbl, headers, for instance) in your quest for better performance out of your 225. Suggest you go sign up for
www.slantsix.org and start posting questions and reading past answers.
DS