625 CFM Street Demon Carburetor

Replaced a dead Q-Jet on a 1986 350 in a Chevy P30 stepvan. Installed it on the original spread bore manifold. Needed a minimum 3/8" spacer to clear the throttle blades and the manifold. For the record, I was concerned with how much the new throttle primary's were shrouded, and expected problems. Spoiler, there were none. Minor tweaks to the original air cleaner and throttle cable bracket, hooked up the fuel and vacuum advance, and it fired right up. Fast idle was dead on, choke worked properly, and kicked off the fast idle. Idle probably needs to come a bit, and I have not done any tuning yet. I'm not kidding when I say it is like having a new engine. Truck is a stick, and the Demon has made the idle so smooth and the transitioning of the various circuits make for a joy to shift it now. Pulls in second gear like a banshee. Don't need to downshift on long grades either. I had planned this carb to be a transition unit until I stepped up to Fuel Injection, but if this is how it runs with the Demon, I'm just going to leave that Demon right where it is.

Bought this Street Demon Carb two weeks ago to replace my old Edelbrock 1406. The street demon looked awesome right out of the box. Installed it in my 69 C20 with 5.3 LS1 hot cam. Insulation was easy, it came with everything I needed to hook up to my 4L60 trans, turned the key, fired right up..., This carb made my motor sound and run awesome... I will be purchasing another one for my other trucks... Thank you Holley for making a awesome and affordable carburetor...... #shopjegs..