And 440+6 packs were supposed to have special cranks too. You can read about it here (Section 8 "Engine" of the Service Training Manual, Page 5, 2nd bullet): http://www.e-bodies.org/resources/service-manuals-parts-catalogs-tsb/ "All 440 engines have same crankshaft, except 440-6 BBL, which has shot peened journal fillets. This is identified by surface texture of fillet and portions of counterweight."
1970 Challenger T/A 4-Speed 1970 Challenger T/A 4-Speed 1970 Challenger T/A Auto 1970 Challenger R/T Auto 1970 Challenger Auto 1970 Challenger RT 440+6 4-Speed 1970 Challenger RT 440+6 4-Speed 1970 Hemi Challenger 4-Speed 1970 Hemi Cuda 4-Speed 1971 Cuda Auto 1971 Cuda 4-Speed LOOKING to BUY 1970 & 1971 E Body J, V and R Code project cars
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