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**Steeveedee** · 09-10-2017, 06:08 PM

L47 on the SPID is 400 big block; at least mine came that way from the factory. As for the two-barrel, are you sure? Mine has a Q-Jet. If it really is a 454, the ID on the engine will be different.

Also, 2-jet Rochesters could be found on big block engines, so if the engine is a 454, it probably came that way, and was installed as a complete assembly.

And, yes, that is a nicely optioned truck!

09-10-2017, 06:08 PM	#7
Steeveedee Who Changed This? Join Date: Jan 2013 Location: Simi Valley, CA Posts: 10,076	Re: Nicely optioned cheyenne 20 i picked up L47 on the SPID is 400 big block; at least mine came that way from the factory. As for the two-barrel, are you sure? Mine has a Q-Jet. If it really is a 454, the ID on the engine will be different. Also, 2-jet Rochesters could be found on big block engines, so if the engine is a 454, it probably came that way, and was installed as a complete assembly. And, yes, that is a nicely optioned truck! __________________ ~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA Last edited by Steeveedee; 09-10-2017 at 06:13 PM. Reason: compliment