Guys,

Firstly thanks for all the info on here. It's helped a lot over the last few years without me needing to ask a question !

Secondly. Sorry. I'm sure this has been asked a million times but I have looked and can't find it . . .

I'm at the final stages of putting a '93 LT1 into my '83 Z28.

The car was already hacked about before I got her so I've been part customising and part restoring as I've gone along . .

I've switched to a 600CFM Edelbrock Carb and the GM intake.
I've got HEI Dizzy, CC503 camshaft, 1.7 Rockers (+beehive springs).
Heads are stock ones but have been mildly ported.
Doug's LT headers into a (currently) completely unbaffled, dual exhaust.
Crank, rods and pistons are stock.
I'm running 3.73 gears, T56 trans, ally flywheel.

Electric water pump, manual steering (lowered alternator with short belt).
A/C removed (it rarely gets that hot in the U.K)

I've machined a keyway in the crank hub, added timing tape to the crank pulley, made-up a timing pointer and set TDC using a DTI.

My question is . . with this set up, what should I be setting my timing at ?

I've gone through the internet and came up with various answers but I'm not happy.
For now I've got her idling fairly happy @ 700RPM and throttle response is good but I want to be sure.
I'd say I'm 85% there at the moment. The carb isn't what I plan to run long-term but my experience with Edelbrocks has been good so It seems like a sensible place to start.

Economy has gone out of the window. I'm going for performance and she'll be running on the highest octane fuel I can find.

Comments and suggestions welcomed and appreciated.

It was great to hear her fired for the first time in years at the weekend.

 

36deg full mech all in by 2500 rpm, max around 52 w/ vac. adv. for cruise. See where it comes out @ idle if too high either get a crank retard or mod the curve.