Why do i have large main well tubes also???

[Mr.Pontiac]

I ve only seen main well tubes with restrictions on the end but my top has the same size main well tubes as secondary main well tubes, All 4 tubes o.d. are same size. Will huge main well tubes hurt anything?

[Cliff Ruggles]

Sounds like a 69-70 Pontiac carb with the primary POE system, they use 4 tubes the same diameter....Cliff

[Mr.Pontiac]

I see it mentioned page 106 looking quickly thru your book, so what does POE stand for and whats its function please. Thanks always for your input

[Mr.Pontiac]

I found it on page 85 but really don,t know how it works, pass along some info please??

[Cliff Ruggles]

POE is Pull Over Enrichment, supplying fuel thru the tubes into the engine on the primary side with some airhorns, just like it does for the secondary side.

Primary side POE was used to allow for leaner jetting at cruise.  POE adds in fuel with quick throttle movements much like an accl pump to avoid a lean condition......Cliff