The Ford Barn

Popastruck · 09-23-2024, 07:18 AM

Hey all. I need some help. I have a 1953 8ba rebuilt 30 over with 4” crank Max 1 cam Offy aluminum heads and Speedway three duece intake with 3 super 97 carbs and progressive linkage. Timing is 6 degrees initiall and 32 total all in by 2900 rpm. When I hook up the vacuum gauge the needle is erratic at idle (600 rpm) if I increase the rpm to say 900 the gauge evens out around 18. If I increase idle to 750 the needle waves between 14 and 18. There seems to be a slight miss sound at the tail pipes. Sorry about the long explanation but I don’t know what to do next?

09-23-2024, 07:18 AM	#1
Popastruck Junior Member Join Date: Oct 2020 Location: Ontario Posts: 4	Flathead tuning Hey all. I need some help. I have a 1953 8ba rebuilt 30 over with 4” crank Max 1 cam Offy aluminum heads and Speedway three duece intake with 3 super 97 carbs and progressive linkage. Timing is 6 degrees initiall and 32 total all in by 2900 rpm. When I hook up the vacuum gauge the needle is erratic at idle (600 rpm) if I increase the rpm to say 900 the gauge evens out around 18. If I increase idle to 750 the needle waves between 14 and 18. There seems to be a slight miss sound at the tail pipes. Sorry about the long explanation but I don’t know what to do next?