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Tech Q & A

Technical questions about Mopar builds, repairs, and anything else Mopar.

Color Me Blue

My car (’73 Cuda 318) is in rough shape but is basically solid. The resto books and variouswebsites do not list a paint code for Petty Blue. The fender tag is there but in bad shape so I can’tmake out what it says. I just want to verify

Pattern Maker

I contacted you a few years ago about a noisy 741 pig I built using well used components. I swapped it out and I am finally getting back to the project for my 1966 Belvedere II. My first attempt had the pinion too far away so I tried

Car Tunes

I ’m helping my son finish dropping a 440 in his Dart Sport. New everything. All is great, except for little vacuum. We used a MP aluminum manifold—P4529118, and a MP cam P4120235 with 284° duration and 0484˝ lift. Vacuum at idle is around

Mileage Melee

A friend of mine bought aused ’95 Ram pickup withthe 5.9L Cummins turbo diesel.He’s getting almost 3 MPGbetter than my new 2010 5.7LHemi Ram, even though minehas the MDS .I say this is because the dieselhas a much higher compressionratio.

In Lieu Of Lube

Do you pre-oil Moparhydraulic lifters beforeinstallation? I mean, filling thelifter itself with oil? I am sure Iread in the M.P. Engine Manualnot to do that as it could causepiston damage. What’s thescore, E’Berg?Correct. Do not pre‑oil

Silver Special

Were any 1965 Plymouthsbuilt painted silver? Inquiring mindsneed to know.Only the Barracuda and Valiant Signet,the paint code was N – “Barracuda SilverIridescent”. No other ’65 Plymouths wereoffered in silver. It was an extra cost coloron

Reference Run-Around

I was lookingat getting copies of thoseschematics (engineering diagrams)for different systemsyou print from time to time fora 1969 ’Cuda 440 notchbackthat I am trying to do a highlevel restoration on. What otherreferences are out there

Wire Fry

I have an unmolested’75 Royal Monaco, 400 CID,46K. The sparkplug wires forcylinders 5 through 8 seem differentthan the front cylinders,but I see no evidence that theyaren’t original. What’s going on?Good eye! The rear fourcylinders, only,

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