327 (5.3) to replace 305
#3
RE: 327 (5.3) to replace 305
If the 5.3 was rebuilt and it worked/ran correctly afterwards, than you'll be ok. I would toss all the old EFI stuff from your 5.0 and use 5.3 sensors, PCM, wiring, etc. Unless you are using just the 5.3 block without the intake, fuel system and heads and using the ones from your 5.0, then you'll need a custom tune for the engine to comp for the difference in ci. Everything should bolt from the 5.0 to the 5.3 but Im not 100% on that.
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floridastatenolefan
Chevy Silverado/ GMC Sierra Forum
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06-26-2006 01:09 PM