Spark Plug suggestion.
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Spark Plug suggestion.
A search here yielded nothing, so I thought I'd post. I'm going to be changing plugs soon and was wondering what you guys are using. My engine is a '71 383. Heads are cut a bit to yield about 10:1 comp. 284*/.484 Purple Shaft cam. Dual plane intake, Holly 750 DP,Hooker Super Comps, 3k stall speed converter w/4:10 axle rear. Car usually driven a mixture of around town cruising with some highway use. What would you guys suggest. I don't recall whats in the car now, but probably Autolites. Thanks.

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- GTX (RS)
- Posts: 1394
- Joined: Tue Dec 27, 2005 10:22 pm
- My Cars: 1971 Plymouth Satellite Sebring
- Location: Colfax, IA
Re: Spark Plug suggestion.
I've used autolites, but normally i just get champions.....hoping to try out the accel shorty plugs when it gets time to change, though
lots of guys use NGK

Re: Spark Plug suggestion.
Thanks Landon, what plug numbers would I be looking for as far as heat range goes?

Re: Spark Plug suggestion.
I use Accel 134, works good with a double pumper.
BRIAN
BRIAN
Its not numbers matching
It doesn't run on pump gas
And it doesn't purr like a kitten
11.73 at 115mph
It doesn't run on pump gas
And it doesn't purr like a kitten
11.73 at 115mph