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There are a lot of good replies here already but I'll put in my 2¢. While flat-tappet engines require ZDDP, those with oem-style valve trains don't need huge amounts. The thickness of the ZDDP layer doesn't depend on ZDDP concentration. Since the layer is sacrificial, more ZDDP really just...

Last year, I was working on tuning the Quadrajet and, with a #73 primary jet, my best highway fuel economy so far has been 26 mpg with the APT turned out 4 turns from the bottom. I started to get a lean surge at 3.5 turns. This year, I upgraded to HEI from the Mopar orange box I had been...

I just updated my signature to show my setup but its a 225 slant six with a TorqueFlite and 2:76 axle. About 30 years ago, I put in a Direct Connection high lift, short duration cam (PN 4120243), 318 valves, 340 valve springs, some mild porting, and a Carter AFB. I upgraded to a Quadrajet last...

I regularly do a 500 mile round trip from Fort Erie to Kingston, ON, which takes usually about 12 hours by the time I get home. The only thing I don't enjoy is Toronto traffic and take the NYS Thruway whenever possible.

When I had my AM radio in the shop for repairs, I had them add an Aurora FMC-1 FM tuner. The write-up is here: Radio Upgrades

I wrote the following article up for the Rods & Relics club members: Winter Storage

I've been using Sunoco Gold Diesel as it costs 2¢/L more than regular diesel.