Thank you all very much for your advice on my gsk and timing questions. Now I have another question about fuel plates. As you see in my profile I have a #6 plate in my truck. I thought I had a bone stock truck so when I bought the injectors and such I also bought a #10 plate. PDR says I should still put in the #10 plate. What do you suggest? Also, how do I know where the stock position is? PDR suggests I put the #10 in .030" forward but I don't know if the #6 is in the stock position or slid forward. I think I am happy with the #6 but I don't know since I have never used the #10. Please advise.

 

If whoever installed the #6 did it right they should have scribed a line even with the plate front in the stock position on top of the housing. If they didn't you're out of luck, the stock position is different on every engine, set by Cummins when they initially tune the engine. Start out in the middle and plan on opening up the housing a few times to slide where you like it.

You'll like the #10 better especially on a '94

 

just install it all the way forward and only open the housing once

 

Go with the #10 - it's the smoothest plate and has huge bottom end power. IMO, it is superior to the #6. Be careful, though........the #10 is a converter eater full forward - even on a 94. The stock converter will not put up with alot of the big bottom end torque increase that a full forward #10 will offer. Budget a good converter at the very least if you have a heavy right foot. I would install the plate where the previous one was and go from there (assuming the existing plate is not full forward). Be prepared to experiment with the plate position and AFC to get it where you want it. You would benefit well from swapping to a lighter AFC spring, also. I have seen 1 example of an owner who was disappointed with the power of the #10 in a 95 auto because he was not interested (or didn't know how) in adjusting the plate and AFC to get the results he wanted. The truck was a dog because he didn't set it up properly. Don't pay attention to the power #'s TST shows - they assume the plate will be in the stock position.

Good luck, you will love the results!

 

Oops! - didn't notice you had the 191 DV's. Don't go with the lighter AFC spring - you will already get more than enough fuel quick enough without it! I am speaking with experience

 

Thank you very much for your help guys. I did not have time this weekend to put in the #10 but it looks like I have all day next Saturday to tweek and tune!! How do I go about setting the AFC? I think I will start with the #10 in the same location the #6 is currently in (somewhere in the middle, definitely not full forward).

 

After you install the #10 where you want it, reinstall the AFC housing full-forward. Slack your star wheel all the way forward and go for a test drive. You will likely get alot of pre/low boost smoke but very fast spool-up. It is personal preference how much low boost smoke is acceptable. Tension the star wheel until you get the desired compromise of smoke and power. If mid and full thottle don't meet your expectations, slide your plate forward about 1/16" and try again.

One thing about the 191 DV's: You will not be able eliminate smoke on the bottom end without pulling the housing back and losing lots of power. You are going to get a fair bit of low boost smoke if you want to maintain reasonable power. I found that it was much easier to keep the smoke down and keep some of the power without the 191's but the power levels just aren't comparable on a 94. 191's and a #10 are a VERY powerful combo on a 94!

Keep us posted on your progress

 

I will keep you posted. I bought the 370's and 191 DV's fully expecting smoke...I like it Thanks again for the help. I will post a new thread after this weekend.

 

Once I get my tranny up to par, along with the other goods in my sig, what would be the best choice for injectors and delivery valves with a 3gsk and #10 plate. I am looking to get the truck to 400hp eventually. Will these bring me there without killing my fuel mileage? Thanks.

-Jared

 

To take care of the low end smoke you can adjust the AFC pre-load or zero boost setting once you have the housing full forward.

J-eh

 

Good luck eliminating low boost smoke with 191's - with the housing full forward and the star wheel in a reasonable location that does not limit rack travel it's impossible to "eliminate" low boost smoke. 191's with the 370's are going to smoke for sure!