shorty plug for vortec heads? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

hesaw00 · 02-24-2016, 02:38 PM

1st of all, in my 1st post I would like to say that this is an awesome collection of knowledge. I just bought my 1st C10 a few weeks ago and this is the 1st old/v8 ride i've had in a long time. Thanks for all of the great knowledge.

I have been searching high and low for shorty spark plugs for my crate motor. It's the standard 350/330hp i see commonly advertised. Just searching for regular plugs for vortec heads is a challenge...lots of talk about .715 depth vs .708, etc. and even with seasoned moderators there seems to be no consensus.

With that said...
Does anyone make a shorty plug for vortec heads? I just put headers on the truck and regular plugs are super tight.

67 chevelle · 02-24-2016, 03:15 PM

Welcome to the board , I found this
"9:1 compression - AC - 45 heat range - I think the plug is a R45TS
9:75-10:1 - AC - 44 heat range - R44TS
"

I had the same engine in a camaro , and vortec heads on a chevelle , great running engines , they like 32 degrees total timing which is low , but what is suggested the 350 330 makes 350 horse with headers and a good carb ,, Remember they need a heater bypass to cool , are different in that way from other small block heads

Bigdav160 · 02-24-2016, 03:32 PM

I think the vortec plugs require a longer reach. I've seen this one recommended

MR43LTS

hesaw00 · 02-24-2016, 05:28 PM

Thanks. Truck has R44LTS plugs in it. And I ended up putting some R44LTS6 plugs back in it. I believe the "6" plug is the save as the R44LTS, just a wider gap of .60

But i'm looking for a shorter plug on the ceramic end...that will allow a little more clearance from the header tube. If your original suggestion is, in fact, a short plug...then I will check it out.

More VORTEC confusion - seems there's also no consensus on gap settings for these heads either... i've read .045 up to .065

hesaw00 · 02-24-2016, 05:29 PM

Quote:

Originally Posted by Bigdav160

I think the vortec plugs require a longer reach. I've seen this one recommended

MR43LTS

Yes - definitely a longer reach, but I'm also looking for a shorter reach on the ceramic end of the plug

02-24-2016, 02:38 PM	#1
hesaw00 Registered User Join Date: Feb 2016 Location: Athens, GA Posts: 6	shorty plug for vortec heads? 1st of all, in my 1st post I would like to say that this is an awesome collection of knowledge. I just bought my 1st C10 a few weeks ago and this is the 1st old/v8 ride i've had in a long time. Thanks for all of the great knowledge. I have been searching high and low for shorty spark plugs for my crate motor. It's the standard 350/330hp i see commonly advertised. Just searching for regular plugs for vortec heads is a challenge...lots of talk about .715 depth vs .708, etc. and even with seasoned moderators there seems to be no consensus. With that said... Does anyone make a shorty plug for vortec heads? I just put headers on the truck and regular plugs are super tight.

02-24-2016, 03:15 PM	#2
67 chevelle Registered User Join Date: May 2013 Location: WEST PALM FLORIDA Posts: 1,174	Re: shorty plug for vortec heads? Welcome to the board , I found this "9:1 compression - AC - 45 heat range - I think the plug is a R45TS 9:75-10:1 - AC - 44 heat range - R44TS " I had the same engine in a camaro , and vortec heads on a chevelle , great running engines , they like 32 degrees total timing which is low , but what is suggested the 350 330 makes 350 horse with headers and a good carb ,, Remember they need a heater bypass to cool , are different in that way from other small block heads __________________ 68 Long Fleet , ly6 , turbo 350 , 3-5 drop , original paint , front discs 67 Small window , 7 foot bed , tweaked 6.0 LSX 2004R Medium Olive 58 Apache fleet , 235 , offy intake , dual exhaust , 4 on the floor , red/white 69 Long Fleet , Custom , 6.0, 4l60 , AC , Medium Olive

02-24-2016, 03:32 PM	#3
Bigdav160 Registered User Join Date: Apr 2011 Location: Klein Texas Posts: 3,852	Re: shorty plug for vortec heads? I think the vortec plugs require a longer reach. I've seen this one recommended MR43LTS __________________ My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe

02-24-2016, 05:28 PM	#4
hesaw00 Registered User Join Date: Feb 2016 Location: Athens, GA Posts: 6	Re: shorty plug for vortec heads? Thanks. Truck has R44LTS plugs in it. And I ended up putting some R44LTS6 plugs back in it. I believe the "6" plug is the save as the R44LTS, just a wider gap of .60 But i'm looking for a shorter plug on the ceramic end...that will allow a little more clearance from the header tube. If your original suggestion is, in fact, a short plug...then I will check it out. More VORTEC confusion - seems there's also no consensus on gap settings for these heads either... i've read .045 up to .065

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