b16gsr

Revisiting this as my setup went from a D1 to and F1C

Setup:

5.3L Truck motor
5.3L 799 Casting with intake gasket match, deck and valve job
Tick Performance Custom Blower cam package
Procharger F1C with ????" pulley
A&A 8 rib bracket with Procharger 8 rib pulley's
Innovators West 10% OD balancer
Custom piping to Treadstone intercooler
Custom fuel system for E85
SD 80lb injectors flow matched

I am looking for help on pulley size/boost levels and what my belt options are. Looking at the impeller calculator probably looking at:

Crank Pulley 8
Blower Pulley 4.25
Step up Ratio 5.4
RPM-Engine 6400

Impeller RPM 65054

or

Crank Pulley 8
Blower Pulley 4
Step up Ratio 5.4
RPM-Engine 6400

Impeller RPM 69120

F1C has 74000 RPM max, and I am not looking to max it out. Leaning more towards 4.25.

I will be running the 5.3L truck motor with a cam package spinning it to maybe 6400 or a little more, as I want it to live for a while.

I will be running E85 and am looking for stout power numbers(would be happy at 650whp or above)

Any help appreciated.

joshtownsend

4.0 pulley and 91in belt i believe

helga203

Wow 6200rpm's is a walk in the park for that motor. I would under pulley it if you set your rev limit to that and stick with it(yeah right).Go to this site http://ls1tech.com/forums/attachment...calculator.zip. Your going to want max impeller speed at 6200rpm so what ever pulley that is in the calculation will get you there.
Just did calculation if your spinning motor to 6200 then 3.25 if your going to spin to 6400 then 3.5 pulley get you max efficiency out of pro charger.

b16gsr

Thank you for that. I will probably go with the 3.5 and work it out from there. Sounds like it is where I want to be.

joshtownsend

I run a 3.55 and an od amd i make 21 psi..far more the 600...

fotoboy

8 in balancer / pulley size x 6200 x 4.1 (step up ratio) should equal about 64000ish. Anything less you will be board with.
I also agree 6200 rpm is chump change for a 5.3 IVe been spinning my 5.7 to 6600 for years and I feel Im too safe.

p1bz

5.3 and 5.7 are identical except for bore.

b16gsr

Yea, probably spinning it higher though. These are conservative numbers, trying to be safe.

I am thinking 6400. Not sure I owuld be bored with it, just having fun and don't want to blow it up.

I knew that, but the 5.3 I am using is iron. Bore distortion is less on the 5.3L with boost too.

joshtownsend

go put a 3.5 pulley on it and report back...

b16gsr

bumping for different setup