Over 100K users of S&S® carbs are believers in the addition of ThunderJet® fuel circuits and the difference it makes in stabilizing a fuel curve to S&S® carburetors. This transformation allows the tuner the ability to obtain a tune for a more stable air fuel ratio.  We offer complete new carbs kits with ThunderJet® and other specialty features https://www.zippersperformance.com/g-carb-thunderjet/

Zipper’s offers services to your carb core with several stages of complex modifications to improve performance and drivability for all types of engines including 124-131 CI engines.

Please note the following-

• Due to the damage to carbs by todays gasoline we cannot give estimates over the phone or email
• Average shop time for carb service is 4-6 weeks
• If you can’t wait consider the purchase of a G-1, G-2 or G-3 carb only

https://www.zippersperformance.com/e-g-carb-ss/

G-1:  Best use on small displacement 88”95 and moderate Output 103” engines. Includes installation of a high volume ThunderPro ThunderJet system, fixed air bleed is now adjustable bleed and external bowl vent machining.

G-2:  For High Output 103-113 CI engines w/Ported Heads, Cams. Includes high volume ThunderPro adjustable air bleed. Flow rate is increased on main discharge tube and venturi is altered and enlarged to change signal rate of specific circuits. This package quickly remedies typical over-fueling problems at specific throttle positions and RPM from the main jet circuit associated with larger displacements.

G-3:  Designed specifically for large displacement engines.  This system allows for a balanced fuel curve on the most difficult to tune large displacement engines.

All fuel circuits are re-configured for the required signal rate in large displacement engines.  This carb system will yield excellent results at any RPM or load making it easier to enhancing lower E.T.’s thru a stable AFR. Engine stability is greatly improved at light load cruise operation.