Mallory Unalite
Thread Starter
Intermediate
Joined: Oct 2005
Posts: 43
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From: Yorktown VA
Mallory Unalite
My 72 vette (350) bogs at higher RPMs. If I slowly accelerate it performs OK, however if I kick it hard - it bogs around 3500 -4000 RPMs. I was wondering if I need to change the timing curve. I set the total timing (according to LARS) to 36 at 2500 RPMs which put it at 16 at idle. I have a mechanical unalite with no vacuum advance.
thanks
thanks
Tech Contributor
Joined: Aug 1999
Posts: 14,382
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From: At my Bar drinking and wrenching in Lafayette Colorado
If your timing curve is checking out fine (sounds like you did a good job setting it up and your numbers look good), start looking at fuel delivery. If the car flattens out and lays down at elevated rpm and open throttle, you may be leaning out. Check fuel supply (fuel filter and fuel pressure) and then take a look at carb issues. Are you running a Q-Jet? If so, check your secondary airvalve spring windup and make sure it's at 3/4 turn.
Pro
Joined: Nov 1999
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From: lantana,fl.
Originally Posted by c3t2
My 72 vette (350) bogs at higher RPMs. If I slowly accelerate it performs OK, however if I kick it hard - it bogs around 3500 -4000 RPMs. I was wondering if I need to change the timing curve. I set the total timing (according to LARS) to 36 at 2500 RPMs which put it at 16 at idle. I have a mechanical unalite with no vacuum advance.
thanks
thanks
Thread Starter
Intermediate
Joined: Oct 2005
Posts: 43
Likes: 0
From: Yorktown VA
Thanks - I'm using an edelrock 750 with an electric fuel pump at 6.5 si. I will check the rotor/cap this PM and let you know the results. What are the procedures for checking out the coil?
