I'm planning a rebuild for my 1990 dodge ramcharger. I will keep the TBI, stock heads, exhaust manifolds, and intake. However I want to put a little better cam in it. Im not lookin for a racer, but since I'm goin to the work of rebuilding it I want to feel a difference in power. Mabye pickup 10-20 hp. I will add dual exhaust from the manifold on out. I have considered takeing a little off the block and/or heads if it would help. I want it to run fine with 87 octane fuel as well as the 91.
My questions...
1. What cam would work well for me... gain a little low rpm hp, make for a nice daily driver, and handel 87 octane.
2. What would the compression of the 318 be in 1990 stock, and what compression ratio would handel 87 octane ok?
3. If I do grind a little off the block/heads which would be better? Could I compensate for the shortened length with shims on the rockers? If not what steps would work best?
That stock 90' 318 in a RC would have the hydrolic lifters but not the hydrolic roler cam right?
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for a street daily driver i recomend a cam of 268 duration not more this is the advertised duration, not the .05 lift duration. i had a 1965 chrysler 300 L with same duration. it realy worked good on the street. the 413 gained 20 hp over a new yorker, but no lose in mpg.
It should have a roller cam.
The only problem is the computer is limiting,you my need to add to/change your computer.
A mild cam may work with out help.
The heads on it are pretty good,but can be better with 360 valves,maybe some port work.
Shaving the heads is an easier option than decking the block.
Some questions about older 318
