Not exactly a high-rpm screamer, but it had the very good low-end torque you'd expect from a truck motor. Testing on Westech's SuperFlow 901 engine dyno revealed an output of 319 hp at 4,400-4,500 rpm and 424 lb-ft of torque at 3,700 rpm. A set of Hooker Super Comp 13/4-inch headers completed the engine package, and we were ready to run. To handle the ignition, an MSD distributor was dropped into place, although an alternative here is the excellent Mopar Performance electronic ignition system. For the induction combination, we used the same intake that came stock on Mopar's 300-hp crate engine-the M1 dual-plane-topped by a 750 Speed Demon carb. This is the minimum level of trim needed to shove a Magnum in place of the slant-six in your old Dodge Dart or Plymouth Duster. FULL 48RE Custom Tuning that others say is impossible My custom tunes are edited at the code level, not just with standard tuning software used by most tuners Most other custom tuners have to focus on keeping up with the new trucks year after year and rarely go back to develop improvements for earlier model year trucks 3rd Gen 5. We'd start with a dead-stock Magnum long-block engine assembly, adding a carburetor, a conventional distributor, and headers for the baseline. Our game plan was to equip the engine with the same basics any Magnum would require for a retrofit into an earlier application. Eventually the 360 earned acceptance from the Mopar crowd, and ironically its popularity has grown to become one of the favored powerplants for performance use, especially when the objective is high output on a real working man's budget. There really was no love for the 360 engine in the early years, and they developed an unflattering reputation as a low-performance "smog motor." It took decades for this impression to lose its hold. With the cancellation of the 340 engine option after the '73 model run, there were a few performance variants of the 360 in the early and mid-'70s, though these were all low-compression engines with the further disadvantage of add-on smog-control equipment. The 4.00-inch-bore-by-3.58-inch-stroke powerplant was originally designed to provide an economical alternative to the popular 383 two-barrel big-block, while the shorter-stroke and larger-bore (4.04x3.31) 340-cube engine carried the performance banner. Chrysler unceremoniously unveiled the 360ci (5.9L) LA-series small-block V-8 in 1971 as a low-compression engine with only a two-barrel carburetor.
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