Exactly Rex on the EV1
Second: The Camaro is a big piece of shit. Save your money and buy something older. - really.
The LT1 Optispark was a pain in the ass, but fairly reliable up to 150K miles. New replacement cap and rotors are available for around $50.
The pisser with the LT1 was the plug wires were buried underneath the manifolds, and it was not a fun job to change them.
Cramped engine compartments common across all platforms made tuneups more expensive as it was harder to get to the plugs.
When maintained however, this engine was very efficient, powerful, and capable.
Ken,
I'm looking at the GM manual for a 02-05 Trailblazer 4.2L.
Taking the entire body off for a valve change makes no sense.:bsflag:
Not sure where your getting your info from....
You take off:
Cam Cover - Mark Sprockets location to one another, and relation to crank position.
Exhaust Manifold
Front Cover
Cylinder head access plugs
tensioner shoe bolts and guides
Timing chain then is loose and comes off...
Pull out the cylinder head bolts (NO IMPACT GUN!!), Gently pry up with a wood hammer handle in an intake or exhaust port and voila, head comes off.
Hell, you can pull the entire engine out without touching the body, other than the grill.