CRG Discussion Forum

Camaro Research Group Discussion => General Discussion => Topic started by: samanatoo on January 03, 2009, 11:58:30 PM

Title: 302 small block fire order
Post by: samanatoo on January 03, 2009, 11:58:30 PM

Does the 1969 302DZ motor have the same fire order as other 350 and small blocks?? 

Title: Re: 302 small block fire order
Post by: Steve Shauger on January 04, 2009, 12:10:36 AM

Yes the firing order is the same as all small blocks 18436572

Title: Re: 302 small block fire order
Post by: RAfbody on January 05, 2009, 01:07:42 AM

The firing order is the same on all older small blocks but when GM came out with the 3rd gen small blocks (1997 LS series engines) the firing order was changed to 18726543. 

Title: Re: 302 small block fire order
Post by: firstgenaddict on January 05, 2009, 01:42:02 AM

Do they run smoother with that firing order?

Title: Re: 302 small block fire order
Post by: 69Z28-RS on January 06, 2009, 04:48:29 PM

Your first gen engine wouldn't..   :)

Title: Re: 302 small block fire order
Post by: JohnZ on January 07, 2009, 06:07:06 PM

The revised LS firing order swaps 4&7 and 2&3, which evens out the firing pulse forces on the crankshaft and reduces cooling "hot-spots" between adjacent cylinders; results in more stable idle and reduced crankshaft torsional deflection.

Title: Re: 302 small block fire order
Post by: tom on January 07, 2009, 09:10:44 PM

I expect the firing could be changed with little more than a cam swap, and moving the wires. MANY years back a friend of mine had a sbc in VW Beetle. He had a cam that allowed the engine to run backwards, and drive the VW transaxle.