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timing procedure 350 L-48 question

Tepot

Well-known member
Joined
Sep 13, 2005
Messages
307
Location
Moncton, NB, Canada
Corvette
1974 Metalic Blue L-48 Coupe 4 speed
Hi,

Can someone tell me the complete procedure to set timing on a L-48 engine. I have a timing light but want to make sure I do everything right. I would need all the details. like what degree should it be timed too, should i unplug vacuum advance first, wich RPM the car should run for tunning. Should I set Idle RPM before unhooking the vaccum advance or after? if someone could provide me detailed procedure, that would be apreciated.

Thanks
Daniel
 

Tepot

Well-known member
Joined
Sep 13, 2005
Messages
307
Location
Moncton, NB, Canada
Corvette
1974 Metalic Blue L-48 Coupe 4 speed
I've checked the above link. it's all good but it doesn't give me what I need. On my demper I have -8 degrees, - 4 degrees, 0 degree, 4 degree and 8 degree. I need to know what is the degree I need to set my timing at on my 350 L-48 engine. And id that link. I don't have it. And no I don't have any books with that info in it.
 

petes74ttop

Well-known member
Joined
Oct 22, 2006
Messages
392
Location
Mount Holly N.C.
Corvette
1974 T-Top
There should be a label in the engine compartment with the timing information. The 74 Service Manual list it as 8 degrees BTDC at idle with the vacuum advance disconnected and plugged. Hope this helps, PG.
 

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