Rebuilding an early Hemi engine
(→Parts interchangeability) |
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*All '51-'53 Chrysler front covers will fit all DeSoto engines. | *All '51-'53 Chrysler front covers will fit all DeSoto engines. | ||
*All '56-'58 Chrysler front covers will fit all Dodge engines. | *All '56-'58 Chrysler front covers will fit all Dodge engines. | ||
| − | *Dodge high block | + | *Dodge high block connecting rods may be used in the DeSoto high blocks despite wider side clearance, but DeSoto rods must be narrowed slightly for use in Dodge engines. The lengths are close enough to be compatible: Dodge 6.618", DeSoto 6.625". |
*Distributors, oil pumps, and bellhousing/starter mounting flange plates will interchange, except for the extended block versions. Keep in mind that these flanges vary in thickness depending on the transmission used. | *Distributors, oil pumps, and bellhousing/starter mounting flange plates will interchange, except for the extended block versions. Keep in mind that these flanges vary in thickness depending on the transmission used. | ||
*Valve stem diameter is the same in all engines and length is very close, so the larger diameter valves from the bigger engines can be used to improve the breathing of the smaller motors. | *Valve stem diameter is the same in all engines and length is very close, so the larger diameter valves from the bigger engines can be used to improve the breathing of the smaller motors. | ||
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*Hemi heads will fit poly blocks of the same family, but will not fit "A" series poly motors. | *Hemi heads will fit poly blocks of the same family, but will not fit "A" series poly motors. | ||
*Chrysler 331 hemi heads can be used on the 301 and 331 polys, and 354 Hemi heads can be used on 354 polys. | *Chrysler 331 hemi heads can be used on the 301 and 331 polys, and 354 Hemi heads can be used on 354 polys. | ||
| − | *No camshafts will interchange between low and high blocks of any engine family because of differing lifter bore angles. | + | *No camshafts will interchange between low and high blocks of any engine family because of differing lifter bore angles. The incorrect cam can be installed, but the engine will run badly. |
I recently discovered that the low deck dodge early hemi (241 and 270 CI) will accept a later small block distributor with no modifications. This may be true of the other dodges, but I do not have one to confirm with. | I recently discovered that the low deck dodge early hemi (241 and 270 CI) will accept a later small block distributor with no modifications. This may be true of the other dodges, but I do not have one to confirm with. | ||
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