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12:30:04 - 04/19/2024
V8 Dakotas
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Matt01RT
Dodge Dakota
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11/30/2003
16:08:31
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 Subject: 1.7 RR or Cam?
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I am thinking about buying the 1.7 RR for my 2001 dakota rt. I have done alot of other mods...from the cold air induction...throttle body...intake...headers...cat back exhaust...hyptertch computer...thermostat...plugs, cap and rotor. I was wondering which i should go for and which would better help my performance...the 1.7 or a cam. Thanks, Matt
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R/T
Dodge Dakota
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11/30/2003
16:33:27
|  RE: 1.7 RR or Cam?
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If I were going to go with a cam, I would do the R/T heads and a M1 along with the tear down.
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gen1dak
Dodge Dakota
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11/30/2003
18:30:16
| RE: 1.7 RR or Cam?
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Getting a good cam is always a great place to start. If you feel you need a bit more, you can then boost the cam performance with an increase in rockers to 1.7:1. If you go with 1.7's on a stocker, you will improve the performance some, but the overall character of the cam will still be there, and it's pretty tame. The early Magnum cams are more aggressive than the later ones, despite being the same lift. If you go with 1.7's, you may be taxing the valvesprings (318 or 360?) The springs are the same, but 318's have valve lift of .432, 360's are only .410. Factor in the 1.7's and the 318 is over .450 lift and that's exceeding the spring lift rating. It'll run, but the springs will not handle high speeds as well, and they will fatigue much quicker. The 360 cam will bump up to around .430 with 1.7's, so it'll be okay in the spring dept. Keep in mind that if you do add 1.7's, and later decide to change the cam, you will need to factor the increased ratio into your cam selection. Naturally, the rockers are easier to swap, but you'll get a lot more with the cam, and you still have the roller rocker swap option for later. The stock (unported) heads will produce 400hp on a carbed engine, so I don't think you're hurtin' for flow with the stock heads. If you have a high-mileage engine, you really should freshen it up, but around 50k in mileage (give or take), I'd just hop it up and hang on.
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