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7
I went to get my 75's timing checked. But the timing degree indicator is not there, what can I do now? 
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Send PMCorydon, IN - USA
Joined: 4/20/2004
Posts: 62
Vette(s): 1969 Black Coupe,355ci,SRT Heads,Crower Cam,Edlebrock, Holley,Bowtie 1.6 rollers,Headman Hedders,4spd,3.55 rear.
If you are talking about the tab that attaches to the timming chain cover, you can buy a replacement that bolts directly to the cover.
Dave
Dave1969 Black/Black Coupe,355CI,4spd, One Owner since 1995.
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Send PMHot Springs, AR - USA
Joined: 4/24/2004
Posts: 3236
Vette(s): 69 Conv #'s match 427, TKO-600/.64, 3.36HD-Posi, HT, T/T, PS, PB, PW, SP, Leather, Comp XE264HR & Roller Rockers & Lifters, Air-Gap RPM intake, Holley St Av 770 VS, MSD 6AL+Dist+Blaster SS, K&N, Jet-Hot Hooker Side-Pipes, Steeroids, Al Rad, Spal Fans
time it by non ported vacuum (intake vacuum)
when the vacuum is peak leave it there.
when the vacuum is peak leave it there.
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Thanks Guys. ? When the vac is peak- What rpm? or just idle.
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s
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Send PMKaysville, UT - USA
Joined: 12/16/2003
Posts: 5
Vette(s): 1977 T-Tops L48 Skirted and Converted
It's at peak when the Inches of Mercury on a Vacuum meter connected with the intake manifold pressure is the highest STABLE on the guage, while the engine is idling. Of course, natural instinct says that non-stock cams will alter the field of play on that, but I could be dead wrong.
Joe Lewis
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in Forum: C3 Engines, Driveline and Handling
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