Supercharger vs. N/A build!

[Phill Pollard]

Originally Posted by twobjshelbys

People put Paxton on the 289. Shelby put two on his 427. I don't think cobras except Shelbys were official but I know of a couple on 289 mustangs. Pretty low boost at 4-6 psi is about all you can do with a carb fuel delivery. A friend had one on his 66 gt350h 289 hipo and said it was noticeable

Huh? I put a Shelby-Spearco turbo kit on my 1967 Camaro with a 350 Target Master (i.e. "crate") engine in it and ran 12-14 psi of boost.

I'm not sure where the 4.6 psi limit comes from unless you're talking about one of the old tech/low tech blow-thru systems (mine was a suck-thru system). I've seen blow-thru's that seal the carb in a pressure box but you have to run foam floats in the carb because brass floats will collapse.

Even with the stock Target Master 350, it made a MONSTER out of that car. I immediately had to put disc brakes on it because it would get going SO fast, SO quickly. I did have to add a Edlebrock Vari-jection (simple water injection) system to my car because of the detonation created at that boost level but once that was on, I could hold full throttle until my balls shrunk. I had a blow-off valve for it but never added it after adding the H2O injection.

I became a BIG fan of super turbo charging after force feeding that car! The difference is amazing, like night and day.


Phill Pollard