Quote:
Originally Posted by BigBlocksRule
If your tranny isn't computer controlled, it's a 700R4...
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he thanks man for all the info. They showed me the old lifter als they are flat. I know remember.
so flat tapped they are. the engine is old, but running fine. Is there a big cost difference in rollers and flat tapped? I might rebuild the engine within the next 2-3 years. So would rollers be a good investement?
problem is I cant find any real good info on the cam selection for propane.
found some info in my cam search:
Quote:
Here are some basics for choosing a cam from your range:
Large cars: Use short or medium duration, exhaust can be longer. Wide lobe seperation is better.
Small Cars: Use long intake duration, exhaust can be longer. Lobe center seperation can be short.
Propane and Natural Gas: Use short or medium duration single pattern. Wide lobe seperation is required.
Trucks: Use short duration. Wide lobe seperation is better.
Nitrous or Supercharger: Use long duration. Wide lobe seperation is required. Supercharger compression must be lower than shown in the guide.
Turbos: Use short or medium duration, exhaust can be shorter. Wide lobe seperation is required. Compression for turbos must be lower than shown in the guide.
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but I dont know really how this info helps me. Summit already offers several choices and lifts for each type of the cams...HELP?
as for the tranny.
http://en.wikipedia.org/wiki/Turbo-H...al_Description
Quote:
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In 1990, the Turbo Hydra-Matic 700R4 was renamed the 4L60. Under the new designation, the "4" stands for the number of forward gears, the "L" for longitudinal applications (rear-wheel-drive), and the "60" is the strength rating (less than the 4L80). "60" is the relative torque value.
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since I have a 1991 model its a 4L60....
after 1992 electronics were added and they changed it into 4L60-E