Author Topic: 302 small block fire order  (Read 5663 times)

samanatoo

  • Member
  • ***
  • Posts: 129
  • 69 Z28 Hugger Orange/Orange Houndstooth
    • View Profile
302 small block fire order
« on: January 03, 2009, 11:58:30 PM »
Does the 1969 302DZ motor have the same fire order as other 350 and small blocks?? 

Steve Shauger

  • Hero Member
  • *****
  • Posts: 633
    • View Profile
    • Vintage Certification
Re: 302 small block fire order
« Reply #1 on: January 04, 2009, 12:10:36 AM »
Yes the firing order is the same as all small blocks 18436572
Steve Shauger
Vintage Certification™ Program, Providing Recognition And Status To Unrestored Vehicles.  The Supercar Registry-www.yenko.net-

RAfbody

  • Member
  • ***
  • Posts: 222
    • View Profile
Re: 302 small block fire order
« Reply #2 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. 
Russ

firstgenaddict

  • Hero Member
  • *****
  • Posts: 2882
  • caretaker of 1971 LT1's 11130 & 21783
    • View Profile
    • Groome Family Automobiles
Re: 302 small block fire order
« Reply #3 on: January 05, 2009, 01:42:02 AM »
Do they run smoother with that firing order?
James
Collectin' Camaro's since "Only Rednecks drove them"
Current caretaker of 1971 LT1's - 11130 and 21783 Check out the Black 69 RS/Z28 45k mile Survivor and the Lemans Blue 69 Z 10D frame off...
https://plus.google.com/photos/112392262205377424364/albums?banner=pwa

69Z28-RS

  • Hero Member
  • *****
  • Posts: 5778
  • owner since 4-Apr-1976
    • View Profile
Re: 302 small block fire order
« Reply #4 on: January 06, 2009, 04:48:29 PM »
Your first gen engine wouldn't..   :)
09C 69Z28-RS, 72 B 720 cowl console rosewood tint
69 Corvette, '60 Corvette, '72 Corvette
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55-'56-'57 Nomads, '55-'57 B/A Sedan

JohnZ

  • CRG Member
  • *****
  • Posts: 4365
    • View Profile
Re: 302 small block fire order
« Reply #5 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.
'69 Z/28
Fathom Green
CRG

tom

  • Hero Member
  • *****
  • Posts: 1146
    • View Profile
    • Discount Internet Services
Re: 302 small block fire order
« Reply #6 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.
69 X11 Z21 L14 glide
looking for a 69 export model (KPH) speed
o