Prior to running this Edelbrock four-hole adapter, I was using an open style adapter as the interface between my Edelbrock carburetor and the Quadrajet intake manifold on my 350 Chevy. The driveability was immensely improved when I installed the Edelbrock adapter. Before, I was experiencing hard-start conditions and had to keep pumping the throttle to supply enough gas to fire the engine. Now, I can simply turn the key and it fires up immediately. The throttle response is much better! The quality of the adapter and attaching hardware is great! Edelbrock even machines threads into this slick aluminum casting to securely mount the carb studs. The shape of the holes provides a smooth transition from the carb to the intake. I highly recommend this part!
Verified purchase: Yes | Condition: New
Worked perfect. Everything included for installation. Easy to understand instruction. Good quality. Made the transition real easy. A must to anyone making the switch from square bore to spread bore carbs.
Verified purchase: Yes | Condition: New
Fits well, smooth transitions for airflow (but has room for improvement if you so desire). Great carb swap adapter that I've used on several occasions prior to this purchase.
Verified purchase: Yes | Condition: New
Placing a Spread Bore Edelbrock On My Dodge 360 cast iron intake this plate helped with increased intake manifold pressure at idle and also improved horsepower and torque through the entire rpm range and responds allot better than the 750 Edelbrock did.
Verified purchase: Yes | Condition: New
Used this to put my Quadrajet on a square bore manifold. Use the 1/4 inch thick quadrajet gasket to get proper clearance. Nice quality, fits well.
Verified purchase: Yes | Condition: New
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