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View Full Version : "Shorty" header plugs? whats the Perfect Plug???



The T-man
06-30-2008, 10:15 PM
I finally am getting my SBC running
I have small chamber iron heads, 69' vintage
running around 9.5:1 compression

I need plug recommendation, one as a starting point anyway
AC delco #?

and plugs that are shorter than normal, to fit behind headers <<<<<
(and no Accels header plugs, those foul)

anyone found the perfect Plug???
thanks!

The T-man
07-01-2008, 01:36 PM
20 views and noone knows what plug they run?
C'mon you guys what's the good plugs?

The T-man
07-01-2008, 09:42 PM
anyone use plugs anymore?:confused:

formula
07-01-2008, 11:37 PM
haha nope, sorry, while you were prepping your SBC everyone else converted to diesel :throw:

I'm running the accel header plugs with no trouble... but das jus' me.

The T-man
07-08-2008, 08:15 PM
c'mon guys what plugs you run?

The T-man
07-08-2008, 08:16 PM
I finally am getting my SBC running
I have small chamber iron heads, 69' vintage
running around 9.5:1 compression

I need plug recommendation, one as a starting point anyway
AC delco #?

and plugs that are shorter than normal, to fit behind headers <<<<<
(and no Accels header plugs, those foul)

anyone found the perfect Plug???
thanks!

JEFFTATE
07-09-2008, 04:17 AM
Most of those older vintage iron SBC heads use an AC Delco R45TS.
I don't know of a shorty plug that AC Delco makes.
Sorry.
A lot of guys us an NGK or Motorcraft plug. Don't know why , or which number on these brands though.
Get another opinion besides mine.
I don't know that much.

HILROD
07-09-2008, 06:10 AM
Your plug selection can depend on a bunch of things. Those heads should use washer head plugs R43 OR R43S. Accel plug 137 crosses to that, I'm unsure if that's a sort one.

JEFFTATE
07-10-2008, 04:43 AM
Your plug selection can depend on a bunch of things. Those heads should use washer head plugs R43 OR R43S. Accel plug 137 crosses to that, I'm unsure if that's a sort one.

You're right about that.
I use the R45TS sparkplug in my Camaro , but I've got '71 heads and block. So they have the tapered seat.
I've also got one of the GM Performance Parts 350/290hp engines that uses the R45TS.

I think the older heads had a flat washer head sparkplug.