73 nova stock engine9/17/2023 ![]() Also note that many cars equipped with factory airĬonditioning and/or heavy duty cooling systems had wider radiators than cars without AC regardless of the engine. ![]() Cooling SystemĪll V8 Novas had radiators with more cores than 6 cylinder ones. Swap so long as they're used along with the corresponding frame perches. I believe either style can be used for an engine They can be identifiedīy measuring the width between the mounting ears that mate with the frame perch. Note that there were two different engine mounts used on small block V8's during the 68-72 year range. ![]() When doing an engine swap in a pre '73 car, the V8 frame halves (perches) will bolt into the same frame holes that were used by Most parts catalogs sell these type of mounts. Therefore, both halves need to be replaced during an engine swap. To the engine (L6, small block V8, or big block V8). These mounts (perches) are made of steel and the engine halves are made of steel/rubber. These years used non-interlocking engine mounts (aftermarket interlocking replacements are available). Through-bolt hole located about 2-1/4" (on center) away from the side of the bracket that faces the engine block. The correct ones for Novas have the large Through-bolt holes are located in slightly different positions on some of these mounts. Note that many 73 - 90's GM rear wheel drive vehicles used very similar looking engine mounting brackets. GM #334971 might also be interchangeable with the #334970 mounts. Well as the LH side of 82-89 F-body (Camaro). I believe the #334970 mounts were also used in many 73+ A-body (Chevelle, ElCamino, GMC Sprint) and B-body (Impala, Caprice) as The original GM numbers for these engine mounting brackets were: Unlike theįrame halves, these brackets are only available new through GM (might be discontinued now) or used (salvage yard, parts vehicle, or The engine halves of these mounts are "U" shaped steel brackets that are specific to the engine type (L6 or V8). Spot welds that hold the shells together). Suspension sell replacement polyurethane cores for use inside the existing metal shells (installation requires drilling out the However, the metal shells on the replacement mounts are Some parts catalogsĪnd local auto parts stores sell replacement frame-halves of these mounts. ![]() Simply leave them bolted to the subframe when doing an engine swap in a 73 - 79 Nova. They are the same for both L6 and V8 engines and (if the rubber core is good) it is possible to The lower (frame halves) of these mounts consist of a rubberĬore surrounded by a metal shell. These years used an interlocking "clam shell" type engine mounts. In other words, the mount-to-bellhousing distance is the same for both L6 and V8 The mounts forward during the engine swap. Since the extra length of the inline 6 engines (as compared to a V8) is in front of the engine mounts, there is no need to move Other sources (junk yards, swap meets, or parts catalogs). ![]() that would otherwise have to be obtained from It provided all of the necessary brackets, wiring, etc. Doing the swap from one '74 Nova to another The 350 for this swap came from a low mileage (25,000 mi) but very rusty '74 Nova. (the former owner didn't use antifreeze one winter) The replacement 350 ![]()
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