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Mertz · 09-20-2007, 11:00 AM

I have a 72 3/4 with 350/350 and pull a 5000 lb trailer once or twice a year. I have some trouble getting up a long 7% grade. I am thinking about going back to a Qjet from my Edelbrock 650. I have headers, MSD ignition, 1.52 roller tip rockers and Edelbrock EPS intake. Can I use the adapter to go from Square Bore to Spread Bore or should I change the manifold to get best performance? The carb guy I talked to said I might want to switch the jets and put the secondaries in place of the primaries. He also suggested adding spring loaded needles to help prevent fuel starvation on the hill.

09-20-2007, 11:00 AM	#1
Mertz Registered User Join Date: Aug 2007 Location: Reardan, WA Posts: 132	Back to Qjet I have a 72 3/4 with 350/350 and pull a 5000 lb trailer once or twice a year. I have some trouble getting up a long 7% grade. I am thinking about going back to a Qjet from my Edelbrock 650. I have headers, MSD ignition, 1.52 roller tip rockers and Edelbrock EPS intake. Can I use the adapter to go from Square Bore to Spread Bore or should I change the manifold to get best performance? The carb guy I talked to said I might want to switch the jets and put the secondaries in place of the primaries. He also suggested adding spring loaded needles to help prevent fuel starvation on the hill.