spark plug for 383 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

fdbdw · 11-05-2009, 05:06 PM

74 350 block rebuilt to 383 stroker 10-1 compression,

I found a thread that stated with 10-1 comp and using accel shorty plugs to use Plug # 0414s and now I am using the ones from my old 350 motor wich are 576s, here are the differences and my questions are, will these be better for my 383, will they fit and what do these specs mean, thank you

0576s- ..460in reach/ heat range 6/ tappered

0414s- .750in reach/ heat range 4/ gasket

11-05-2009, 05:06 PM	#1
fdbdw Registered User Join Date: Jan 2009 Location: colorado springs Posts: 479	spark plug for 383 74 350 block rebuilt to 383 stroker 10-1 compression, I found a thread that stated with 10-1 comp and using accel shorty plugs to use Plug # 0414s and now I am using the ones from my old 350 motor wich are 576s, here are the differences and my questions are, will these be better for my 383, will they fit and what do these specs mean, thank you 0576s- ..460in reach/ heat range 6/ tappered 0414s- .750in reach/ heat range 4/ gasket



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