"I will be testing intakes this year,I'm swapping a rpm on to see what spacers it likes.Removing the water crossover from both intakes.Both intakes will be port matched to my heads.Then after I have the rpm dialed in for spacers I will test both on the same day at the track."
I'll be looking for those results. I found that my CNC ported HO intake from Dave at SD is just as quick if not a tad quicker than the RPM intake I removed, at least thru the 1/8th mile.
I didn't back to back them, but have compared a lot of runs in similar weather and track conditions, and the car hasn't slowed down anyplace with the HO intake in place, and it's a LOT better fit than the taller RPM intake.
I still liked the RPM and ran well with it, but like using the stock air cleaner, filter, lid and Shaker assembly better, which is all drop on with the HO intake. Using the RPM required a different Shaker and a custom air filter in the opening of it, which I never really liked......Cliff
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If you can read this, thank a teacher. If you can read this in English, thank a Veteran!
https://cliffshighperformance.com/
73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile),
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