Vortec Head spark plug
Thread Starter
Junior Member
Joined: Dec 2009
Posts: 19
Likes: 0
From: Somewheres in SC
Car: 87 Iroc-z
Engine: 350 5.7
Transmission: 700R4
Axle/Gears: 2.73 / Stock
Vortec Head spark plug
Somehow i ended up thinking vortec heads used .750" reach spark plugs when in fact they use .708" reach plugs. Now the engine is running with the .750" plugs which are autolite 3923's. Any downside to running the little extra reach?
Junior Member
Joined: Sep 2009
Posts: 67
Likes: 0
From: Newport News, Virginia
Car: 1985 Chevrolet Camaro
Engine: V8 lb9 i believe..
Transmission: 700r4
Axle/Gears: 10 bolt posi
Re: Vortec Head spark plug
this is just a guess, and forgive me if thats not good enough.
but if it were a horrible problem, the worst thing you would have to worry about, would be the pistons punching the crap out of them
asside from that you really only have to worry about premature fouling due to the plug being more exposed in the cylinder.
but if it were a horrible problem, the worst thing you would have to worry about, would be the pistons punching the crap out of them
asside from that you really only have to worry about premature fouling due to the plug being more exposed in the cylinder.
Thread Starter
Junior Member
Joined: Dec 2009
Posts: 19
Likes: 0
From: Somewheres in SC
Car: 87 Iroc-z
Engine: 350 5.7
Transmission: 700R4
Axle/Gears: 2.73 / Stock
Re: Vortec Head spark plug
this is just a guess, and forgive me if thats not good enough.
but if it were a horrible problem, the worst thing you would have to worry about, would be the pistons punching the crap out of them
asside from that you really only have to worry about premature fouling due to the plug being more exposed in the cylinder.
but if it were a horrible problem, the worst thing you would have to worry about, would be the pistons punching the crap out of them
asside from that you really only have to worry about premature fouling due to the plug being more exposed in the cylinder.
Thanks for the reply! The engine is running great so the piston issue isnt a problem but maybe i will switch to the correct plugs just to be safe!. Thanks vamp
Supreme Member
Joined: Sep 2001
Posts: 6,111
Likes: 53
From: Ontario, Canada
Car: 1988 Firebird S/E
Engine: 406Ci Vortec SBC
Transmission: TH-350/3500stall
Axle/Gears: 7.5" Auburn 4.10 Posi-Traction
Re: Vortec Head spark plug
get the right .708" reach plugs. The end of the theads are exposed in the combustion chamber will casue hot spots /detonation.
Use champion RS12YC or equal in vortec heads.
Use champion RS12YC or equal in vortec heads.
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