Tunning For Better Throttle Response

[eutu1960]

Do you have the large cap HEI? If so you might check Spark latency table if it is included.

I do have the large cap, I will look for the spark latency table. thanks

[eutu1960]

I found a Spark Latency Correction table. from what I have read it is for "It corrects the timing based on the A/C alternator effect of the pickup/ reluctor." and thats about what I know at this point

[uncabob]

I found a Spark Latency Correction table. from what I have read it is for "It corrects the timing based on the A/C alternator effect of the pickup/ reluctor." and thats about what I know at this point

Try searching for spark latency tables for large cap on Corvettes over on third.gen. IIRC it has to do with the larger radius
and the time it takes the rotor to move from point to point. It made a big difference for me.
Bob

[eutu1960]

Try searching for spark latency tables for large cap on Corvettes over on third.gen. IIRC it has to do with the larger radius
and the time it takes the rotor to move from point to point. It made a big difference for me.
Bob

OK but I already have a large cap with the correct bin with the latency table for a large cap, are you saying I should switch to a small cap latency table or are you saying use the large cap latency table.

[uncabob]

OK but I already have a large cap with the correct bin with the latency table for a large cap, are you saying I should switch to a small cap latency table or are you saying use the large cap latency table.

Nope: Sounds like you should be good. Sorry if I side-tracked you.
Bob

[eutu1960]

Nope: Sounds like you should be good. Sorry if I side-tracked you.
Bob

Thats OK Thanks anyway, any input is better than no input.

[uncabob]

Thats OK Thanks anyway, any input is better than no input.

Mine appears to be different than your latency table. This one is for corvette with large cap.
The table you are using looks like my old one. My engine is basically a stock 84 corvette L83 5.7l.
Got this from 3rd Gen.

800 214
1200 275
1600 305
2000 244
2400 275
2800 244
3200 305
3600 320
4000 290
4400 305
4800 305
5200 305
5600 305
6000 305

Bob

p.s. My ecm is 7747 not the original. It came with a chip for a '87 van w/o large cap.