i pull in the 2.6 class in my 97 cummins. i have a s400 charger and 5 by .016 injectors.

Same here

and yes it can be driven daily

ok that works, so oring it instead of fire ring how come? and do i need a different cam or use the stock cam and valve springs or change to 60lb? what about dv change them and make them bigger? and the last thing do i need to used 160hp injectors instead of 140hp to get the turbo spool up quicker? sorry its so long:humm:

It's not about more fuel to get a big charger to light. You have to feed it just enough to get it going to much and you'll drown it out. This is where proper afc tuning comes into play.

use o rings because they are more street friendly and can be reused. your stock cam will do fine for starters but I would use a bolt on retainer and better springs than the 60lbs springs.

For Dv's I have ran 131's, 181's, 191's and full cuts. by far my fav are the 191's they make good power and less heat then the full cuts ( which were my least fav set). your injector choice is going to mainly depend on the turbo of your choice, since you said your gonna pull 2.6 class it boils down to the housing choice, turbine wheel, and what frame charger your gonna buy.


Bingo on the dyno that is true. On the track I run with no afc, my charger lights very easy off the line.

so oring the heads, use the better valve spring then the 60lbs, keep the 140hp injector, use the 191 dv, and i thought about either a super b special turbo or a silver bullite series which would be better? what do you mean by a bolt on retainer?

about your charger choice ... the 2.6 rule states no bigger than 2.650 inducer. the super B is 64 mm which is smaller so that would work but you will be underturboed. The silver bullet is 66mm but is known not to pass the 2.6 plug. If you order a bullet make sure you tell them you want it to pass the 2.6 class plug.

I have ran a silver bullet and it is a blast on the street.

More fun than the 465?

pic of a cam retainer

it lit bout 100 rpm faster but did not pull as hard up top.

If I were to DD my truck I would have kept the bullet