Spark Plug Help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BigMike56-72 · 07-12-2016, 02:32 PM

Guys,

I need some help here. I just picked up a 72 with a 350 in it and I want to change out the plugs. It currently has some SplitFire SF2E plugs installed but when I look up online they are discontinued. I want to get new plugs that are as good or better than what it had installed. There are so many options to choose from and I don't want to order the wrong thing. Any mechanics on here that can point me in the right direction?

Also I have a question on oil weight. The mileage on this truck are really unknown at this time, so with that being said what weight oil would you use?

Again thanks again for your help.

Mike

trac209 · 07-12-2016, 06:00 PM

AC delco 45ts or equivalent will be fine for plugs and a decent 10/30 weight oil will be good enough for a stock engine in good working order.

BigMike56-72 · 07-13-2016, 10:36 AM

Trac209

Thank you for the info. I went to the auto parts store and they gave me some AC R43TS. I could not find 45TS plugs. Would these be OK?

LONGHORN1962 · 07-13-2016, 10:55 AM

43's are a little colder plug. If you can't fine 45 go 46 but no hotter, unless it burns oil.

GRX · 07-13-2016, 11:15 AM

At this point I will mention to make sure you get the right type plug. The seat was switched from gasket type to taper around this time. And you never know what has been done to a 44 year old truck.

BigMike56-72 · 07-13-2016, 11:27 AM

Quote:

Originally Posted by GRX

At this point I will mention to make sure you get the right type plug. The seat was switched from gasket type to taper around this time. And you never know what has been done to a 44 year old truck.

I agree that is what has me stumped and why I am so worried on getting the correct plug that is a direct replacement for the Split Fire SF2E. I am guessing if I find a direct replacement it will be correct. Not sure if this plug is tapered or not.

BigMike56-72 · 07-13-2016, 11:31 AM

Here is what one of the plugs looks like. The truck has been sitting for 7 years.

GRX · 07-13-2016, 01:53 PM

Tapered plugs. No metal gasket. Good to go.

GASoline71 · 07-13-2016, 06:48 PM

Stock points ignition or HEI conversion?

Gary

07-12-2016, 02:32 PM	#1
BigMike56-72 Registered User Join Date: Jul 2016 Location: Los Angeles/SGV Posts: 74	Spark Plug Help Guys, I need some help here. I just picked up a 72 with a 350 in it and I want to change out the plugs. It currently has some SplitFire SF2E plugs installed but when I look up online they are discontinued. I want to get new plugs that are as good or better than what it had installed. There are so many options to choose from and I don't want to order the wrong thing. Any mechanics on here that can point me in the right direction? Also I have a question on oil weight. The mileage on this truck are really unknown at this time, so with that being said what weight oil would you use? Again thanks again for your help. Mike

07-12-2016, 06:00 PM	#2
trac209 Registered User Join Date: Dec 2011 Location: winnipeg Posts: 1,107	Re: Spark Plug Help AC delco 45ts or equivalent will be fine for plugs and a decent 10/30 weight oil will be good enough for a stock engine in good working order.

07-13-2016, 10:36 AM	#3
BigMike56-72 Registered User Join Date: Jul 2016 Location: Los Angeles/SGV Posts: 74	Re: Spark Plug Help Trac209 Thank you for the info. I went to the auto parts store and they gave me some AC R43TS. I could not find 45TS plugs. Would these be OK?

07-13-2016, 10:55 AM	#4
LONGHORN1962 Registered User Join Date: Apr 2015 Location: Weatherford Oklahoma Posts: 53	Re: Spark Plug Help 43's are a little colder plug. If you can't fine 45 go 46 but no hotter, unless it burns oil.

07-13-2016, 11:15 AM	#5
GRX Registered User Join Date: Jul 2010 Location: MD Posts: 1,937	Re: Spark Plug Help At this point I will mention to make sure you get the right type plug. The seat was switched from gasket type to taper around this time. And you never know what has been done to a 44 year old truck.

07-13-2016, 11:31 AM	#7
BigMike56-72 Registered User Join Date: Jul 2016 Location: Los Angeles/SGV Posts: 74	Re: Spark Plug Help Here is what one of the plugs looks like. The truck has been sitting for 7 years. Attached Images

07-13-2016, 01:53 PM	#8
GRX Registered User Join Date: Jul 2010 Location: MD Posts: 1,937	Re: Spark Plug Help Tapered plugs. No metal gasket. Good to go.



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