Well, I'm getting ready to install my T trim onto my 383 and see what it can do. Before I do that, I need to order a crank pulley from ASP to match my ATI damper. Which size should I order? 7 or 8 inch? I already have enough blower pulleys to do either.

7"/2.75" combo

or

8"/3.2" combo

*Edit* 8 or 10 rib also? Thinking 8 would be ok for street, but not sure. Not sure where to find 10 rib belts either.

 

I used a 6.66/2.75 combo on my aftercooled T-trim on a 383 with AFR 210's. It made 13 psi and ran 10.40 at 133 mph.

Mike

 

i don't think there is room for 8" crank ???? i have 7" crank & 2.65 6500 eng rpm 14lbs.....with my custom 4" piping

power in sig

 

Guess I'll have to get under the nose and take some measurements.

 

What Schurters said. An 8" won't fit cause it will come too close to the belt tensioner and also hit the passenger cooling fan motor. You may be able to squeeze a 7.25" in there. I'm running a 7"/2.75" 8 rib combo on my T. Works nicely. 14psi at 6k rpm. I would imagine it would make more at a lower altitude though.

Ken R.

 

Ok, I went ahead and ordered the 7"/2.75" combo for the blower and ATI damper. I guess we'll see how they work in 4 weeks.