Question for motor guys???? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Estanley · 08-13-2004, 09:04 PM

1995 LT1 from a Camero or Firebird. Pin drive distributor no visible wear on any parts. It keeps breaking the rotor off on the side of the distributer cap. It has had two or three new distributers and is still breaking them. Any ideas would be great.

thisolechevy · 08-13-2004, 10:34 PM

HMMMMMMM... I would usually call myself a motor guy and have dealt a bit with LT1's but this very unusual. I have no clue what it is, BUT I assure you that someone on here knows exactly what to do.
Good luck

NPilot1975 · 08-14-2004, 02:08 AM

I am also running a 95 LT-1 and have changed out the opti-spark distributer. The only thing that comes to mind to me is make sure the distributer is seated on the bub flat and straight on it. It may be cocked enough to throught the bearing inside the distributer out and allow the insides to move. Just a guess, never had this problem.

Sweet72 · 08-14-2004, 09:54 AM

I'm with NPilot1975 on this one, the opti has to be aligned and installed in the front cover seal squarely and make sure that the little drive pin in the camshaft is the lined up with the notch in the dist. drive. Just an idea, has the camshaft been replaced? The camshaft has a hole for that pesky little drive pin and maybe it isn't drilled to the correct depth, or the pin itself is too long... I've pulled out more hair working on our 4th gen. F-body LT-1.

08-13-2004, 09:04 PM	#1
Estanley Registered User Join Date: Nov 2001 Location: Eatonton, GA, USA Posts: 191	Question for motor guys???? 1995 LT1 from a Camero or Firebird. Pin drive distributor no visible wear on any parts. It keeps breaking the rotor off on the side of the distributer cap. It has had two or three new distributers and is still breaking them. Any ideas would be great.

08-13-2004, 10:34 PM	#2
thisolechevy Registered User Join Date: Jun 2004 Location: Gainesville, Fl Posts: 382	HMMMMMMM... I would usually call myself a motor guy and have dealt a bit with LT1's but this very unusual. I have no clue what it is, BUT I assure you that someone on here knows exactly what to do. Good luck __________________ Man I need another 67-72!!!

08-14-2004, 02:08 AM	#3
NPilot1975 Senior Member Join Date: Aug 2002 Location: Plymouth, MA Posts: 891	I am also running a 95 LT-1 and have changed out the opti-spark distributer. The only thing that comes to mind to me is make sure the distributer is seated on the bub flat and straight on it. It may be cocked enough to throught the bearing inside the distributer out and allow the insides to move. Just a guess, never had this problem. __________________ 1972 Blazer body...need to get a thread started for the rest of the story

08-14-2004, 09:54 AM	#4
Sweet72 Registered User Join Date: Nov 2003 Location: Alexandria, VA Posts: 1,534	I'm with NPilot1975 on this one, the opti has to be aligned and installed in the front cover seal squarely and make sure that the little drive pin in the camshaft is the lined up with the notch in the dist. drive. Just an idea, has the camshaft been replaced? The camshaft has a hole for that pesky little drive pin and maybe it isn't drilled to the correct depth, or the pin itself is too long... I've pulled out more hair working on our 4th gen. F-body LT-1. __________________ '72 GMC SWB C1500 Custom, frame-off in progress. 383 SBC, 9:1CR, Comp Cams XE262H, Scat internal balanced crank, Eagle SIR 6" rods, Keith Black dish pistons, Dart Iron Eagle 72/180 heads, Weiand Stealth intake, Stewart stage I water pump, Holley 4bbl vac sec, TH350 with B&M Shift Improver Kit. 12 bolt positraction.

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