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12-08-2009, 10:00 PM #1
- Join Date
- Aug 1999
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- Arizona
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- 51,364
Black- 383 Procharged & N20 Vert
The Return of The 4.6 Junkyard Jewel
The Return of The 4.6 Junkyard Jewel
In search of more power with a Junkyard Jewel 4.6L two-valve Mod motor, we try different headers, carburetors, and intake porting.We don't usually do updates or two-part features on our Junkyard Jewels, but we walked away a little dissatisfied with the first round of testing on our $400, 117,000-mile Crown Vic refugee in the Apr. '08 issue. We just didn't have enough dyno time to get to know the MSD 6 MOD ignition better and find the tune our mod motor was most happy with. We knew we'd left power on the table, so we went back to Dyno-Motive in Placentia, California, with a few different parts to try, along with master tuner Harvey St. Mary of HMS Performance in Whittier, California, as our secret weapon. We have a slightly revised parts list, but we won't be cracking a single seal on our long-block from the last round. Everything will be tuning or bolt-on in nature. Did we hit our goal of 1 hp per dollar of the original junkyard purchase price? Read on to find out.
Photo Gallery: The Return of The 4.6 Junkyard Jewel - Hot Rod Magazine
Photo Gallery: The Return of The 4.6 Junkyard Jewel - Hot Rod Magazine
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