AMC 360 Engine Build - Headers and Carb Swap

Combo Two: Hooker Long Tubes, Holley HP 750 Carb
We went directly for the long tubes on this one to see how much we were giving away with the shorties. As predicted, the long tubes made more torque higher in the powerband and added horsepower at 6,000 rpm. We also noticed the vacuum reading at WOT was 1.8 inches, an indication that the 600-cfm carb was becoming a restriction. We installed an HP 750 carb and picked up 5 lb-ft of torque and a couple of horsepower at the top while improving the WOT reading to 1.4 inches.

Power
Headers
Peak HP: 467.4 @ 6,000
Peak Torque: 451.4 @ 4,600

Carb Swap
Peak HP: 468.9 @ 5,900
Peak Torque: 454.7 @ 4,500

We've seen the long-tube 1 5/8 Hooker Headers on a few AMCs but never on a Rambler. They make power, but we might use the Edelbrock shorties in the car. A recent redesign enlarges the opening near the bottom of the exhaust port that eliminates power loss and cooked gaskets.
We've seen the long-tube 1 5/8 Hooker Headers on a few AMCs but never on a Rambler. They m
The 750 HP carb has been updated with smoothed venturi transitions lacking choke horns and screw-in air bleeds for tuning. There was a gain in throttle response that you could hear and a couple of bonus horsepower. The real gains are going to be on the track with tuning and 60-foot times.
The 750 HP carb has been updated with smoothed venturi transitions lacking choke horns and

Combo Three: Intake Swap Torker
We see these intakes at every AMC event and every adjoining swap meet. The Torker is a single-plane design from back when the single-plane meant everything. We bolted it on expecting the RPM Air Gap to kick it around. Down in the lower-rpm range, it did. The Air Gap beat it by about 12 lb-ft on average and nearly 800 rpm lower in the band. But after 5,300 rpm, the Torker managed to pull away by 12 hp all the way to 6,000, proving for pure WOT, it's still hard to beat a single-plane. Looks cool too.

Power
Peak HP: 480.7 @ 6,000
Peak Torque: 448.3 @ 4,900

We used the MSD Ready-to-Run distributor set at 35 degrees total. It doesn't need a separate box to run, just a couple of wires to power and ground.
We used the MSD Ready-to-Run distributor set at 35 degrees total. It doesn't need a separa
Indy Cylinder Head makes arguably the best valve covers for the AMC. They have no provisions for an oil-fill tube or a PCV, but if you are using an Edelbrock manifold, it takes care of those for you.
Indy Cylinder Head makes arguably the best valve covers for the AMC. They have no provisio