cobra21987

Whats the most boost you would run with the stock eaton supercharger?

Blackvenom01

i think there limited to like 10psi and 13 or 14 ported i could be wrong though

kbraklr

You can definitely get at least 12 psi out of a stock eaton. Up to 17psi on a ported one.

Timspony

...I was running 15 psi with a 2.76" upper with my Stock Eaton! ...No numbers yet with the POSI Race Port!!!

Schmalgar

The main thing with the Eaton is that it has boost drop off, right? So you may get say 16psi in the lower rpms but it's gonna drop off to about 10-12 at higher rpm. Porting helps with that some, right, as it reduces the heat some and improves the flow...

Timspony

^^ Not true...my boost remained right around 14.5 to 15 psi on the dyno ... If its dropping at higher RPM's, its most likely belt slippage!

... With the same pulley set-up as Stock, a Ported Eaton may see a little less Boost because it is more efficient!

Chieflikalotapus

12-15 is the most boost you can make that will be worth it even if it's ported. You can put more boost out of it but then it's gonna create more heat which will result in less power. So I would say keep it at 15 max

cobra21987

Okay cause i got the 8 and a half crank pully with a 2.76 upper and its running at 19 pounds of boost and one local shop told me i can run 19psi as long as i get a bigger intercooler. The other local shop said 15 to 16 max and he wants me to put the stock crank pulley back on. What would you guys do? How much extra horse would it be running 19psi instead of 15psi?

Chieflikalotapus

It's to small of a blower it just creates more heat , that's why they make big blowers , less effort less heat more power , that's why a big blower makes more power at the same boost levels than a small blower. Keep it at 15 max!!!!!! Or get yourself another blower

Timspony

19 psi on a Stock Eaton a little too much (Heat) .... tanks & HE do help!!

My Bay (I also have a AFCO HE)....I run ICE at the track!!