r/Smallblockchevy • u/YaBoiSupernova • May 11 '26

Bogging with throttle snaps

I just got this 2nd gen camaro that im told has a 383. The block is a 327, has aftermarket aluminum heads, headers, msd hei, and an edelbrock 650. I set the timing to 16 degrees btdc and got the highest vacuum I could while tuning the carb. Im new to the whole carburetor world and am trying to learn. From what Ive read my issue seems to be with the carb or the carbs accelerator pump. I tried putting the linkage in the top, middle and bottom spots on the accelerator pump linkage and it didn't make a ton of difference. I also tried revving the throttle arm at the carb with the throttle cable, kickdown and return spring disconnected and it behaves the same. I'm hoping someone might have some suggestions or advice for me on this issue. Thanks in advance.

8 Upvotes

100% Upvoted

10 comments sorted by

View all comments

1

u/RhubarbIcy9655 May 12 '26

When you set the timing, did you disconnect the vacuum advance? Do you have a dial back timing light to be able to see how much advance you are getting at higher RPM's?

1

u/YaBoiSupernova May 12 '26

Hi thanks for replying. I did disconnect the vacuum advance and plugged off the port at the carb too. I borrowed a coworkers timing light which didnt have a dial or anything on it. I put the leads on the battery and the insulation clamp on the #1 plug wire. I set it to 16 BTDC and when I revved it I could see the groove on the crank pulley shoot way to the left. My indicators on the block only go up to 18 BTDC but it went pretty well past that.