Switching out my 850dp w/Edelbrock performer RPM for the Weiand B tunnel ram w/dual quad top.
I was thinking reading good stuff & thinking about the 450 Holley mechanical secondaries w/o secondary acc plumps but have also read bad stuff saying they are horrible to tune & over come the secondaries not having acc pumps & that basic 600 VS are better. My thought is the 600 VS doesn’t have a acc pump on the secondaries either & but slowly open & with the mechanical secondaries you could bring them on slowly.

The car is very responsive & I drive it on the street & to work often & doesn’t bog with the 850dp & has run a best of 12.6@110mph but I’ve only had it down the track 6 or 7 times, hope to get many more runs this summer. Hoping to get a little more out of it with the tunnel ram & I am going to run a 125hp nitrous set-up under the dual quads. Just looking to know what you guys have used with tunnel rams & what got the best results.

The car is a ‘67 Barracuda fastback, 3,090 lbs
68 383 B motor w/10:1 compression
Edelbrock E-Street(out of the box w/3 angle valve job)
75cc chambers
210cc intake runner volume
70cc exhaust runner volume
2.14" intake valves
1.88" exhaust valves

Cam - Comp XE274H
230/236 @ 0.50 duration
LS of 110*
Intake CL 106*
Crane ductile iron 1.6 rockers to achieve
.510 lift @ intake valve
.523 lift @ exhaust valve

1 7/8" Hooker fender well headers
727 w/stock style high stall converter
8 3/4" 4.10 sure grip