LT1 issue

John Nechiporchik · 07-13-2014, 09:54 AM

OK....The Optispark cap bolts are E4 Torx. Not a socket found in regular tool or auto parts stores. Apparently Snap On and Matco carry them.
However, on another forum A guy posted that the throttle body cover screws are the correct size torx. As I had a spare throttle body, I removed one of the screws, chucked it up in a vice grips and got a tool (however crude) that works.

Rob Petrie E395 · 07-13-2014, 10:18 AM

That is basically what MSD sends you with a new cap and rotor or complete Optispark. Its just a screw with a thick nut on it. As far as taking the stuff out of the inside (wheel and sensor). I have always left mine in with no problems. Glad you found the problem and are back on track.

John Nechiporchik · 07-13-2014, 10:36 AM

Thanks Rob.

07-13-2014, 09:54 AM	#1
John Nechiporchik Member Join Date: Mar 2007 Location: Grosse Ile Mi. Posts: 316 Likes: 84 Liked 13 Times in 7 Posts	Re: LT1 issue OK....The Optispark cap bolts are E4 Torx. Not a socket found in regular tool or auto parts stores. Apparently Snap On and Matco carry them. However, on another forum A guy posted that the throttle body cover screws are the correct size torx. As I had a spare throttle body, I removed one of the screws, chucked it up in a vice grips and got a tool (however crude) that works.

07-13-2014, 10:18 AM	#2
Rob Petrie E395 VIP Member Join Date: Dec 2007 Location: Woodlawn IL Posts: 1,092 Likes: 162 Liked 216 Times in 77 Posts	Re: LT1 issue That is basically what MSD sends you with a new cap and rotor or complete Optispark. Its just a screw with a thick nut on it. As far as taking the stuff out of the inside (wheel and sensor). I have always left mine in with no problems. Glad you found the problem and are back on track.

07-13-2014, 10:36 AM	#3
John Nechiporchik Member Join Date: Mar 2007 Location: Grosse Ile Mi. Posts: 316 Likes: 84 Liked 13 Times in 7 Posts	Re: LT1 issue Thanks Rob.