Loosing boost at high RPM

289 · 02-27-2009, 06:03 PM

I'm loosing my boost at high RPM. I have an 8 pound pulley on the SN93 and I drop to about 5 psi when I hit my shift point at 6k. The car does have a steeda 19 cam and 1.7 roller rockers so my lift is higher than stock. I also have a 65mm tb.
Is it possible I'm out breathing the supercharger
thanks guys

Brcuda · 02-28-2009, 09:26 PM

Sounds like belt slippage.

02-27-2009, 06:03 PM	#1
289 Registered Member Join Date: Jan 2000 Location: Mount Joy, PA , U.S. Posts: 198	Loosing boost at high RPM I'm loosing my boost at high RPM. I have an 8 pound pulley on the SN93 and I drop to about 5 psi when I hit my shift point at 6k. The car does have a steeda 19 cam and 1.7 roller rockers so my lift is higher than stock. I also have a 65mm tb. Is it possible I'm out breathing the supercharger thanks guys

02-28-2009, 09:26 PM	#2
Brcuda Registered Member Join Date: Feb 1999 Location: St. Louis,Mo. USA Posts: 37	Re: Loosing boost at high RPM Sounds like belt slippage. __________________ Just a SBF with blower :-) Donathen Racing (302MAN) Tuned by Bob Kurgan Motorsports AMT RACING ENGINES JEFFERS PRO CARS MUSTANG MUSCLE PERFORMANCE & DYNO SERVICE

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