Originally Posted by bck (Post 4439395)

Here is the quote from the Teague tech article that had me interested.

"Try the World Products Merlin X to accommodate a Holley 4500 series Dominator carburetor. The manifold works well out of the box and has brass inserts in the water passages to protect from corrosion. Select a two-circuit 1050 CFM carburetor. Three-circuit carburetors run rich in the midrange. Under the carburetor, install two 1-inch spacers. The top spacer should be a four-hole design, which lengthens the carburetor venturi and improves the booster signal.

This improved influence on the carburetor boosters will improve throttle response with the big carburetor. The spacer next to the intake manifold should be a cloverleaf design that improves the flow transition from the fourhole spacer to the intake manifold plenum..."

Originally Posted by Black Baja (Post 4439391)

The purpose of a 4 hole spacer is to protect the booster from the pulse that travels back up the intake port when the intake valve closes. If that pulse slams the booster you are in trouble. Fuel turns into a puddle in the bottom of the intake power goes down and detonation goes up. You really need a properly designed spacer to get the job done correctly. The HVH spacer looks cool but doesn't protect the booster.

Originally Posted by endeavour32 (Post 4439453)

What was the compression ratio and general cam spec's on your engine? Nice post by the way, lots of great info!

Originally Posted by SB (Post 4439665)

Yes, and it probably came with a free piece of a ham sandwich, if you ground it out.

Originally Posted by endeavour32 (Post 4439453)

What was the compression ratio and general cam spec's on your engine? Nice post by the way, lots of great info!