The 510 Realm

My Carb has no vac port! I haven't touched or tuned the Carb.
I don't have a tach but it only happens on the freeway under a heavy load in 5 th gear. But it seems i get lower rpm on the freeway.

And yes I have a ignition module I have the matchbox dizzy and I got the timing at 11 btdc advanced.

Thank you ima try this tommorow if it works, hopefully

Thank you, I might send it to get a rebuild kit and clean haha idk the last time it got a cleaning.
By the way may i ask whats the difference about connecting the vacuum to the manifold or carb?

I havent checked or tuned anything in the carb, i was thinking it was running to rich, Where should i check leaks? I have the vacuum advance to the manifold but people told me to plug it cause it is retarding my ignition timing.

It gets the fuel fine. But it dies only on the freeway under a load but on the street its fine , iget home the top filter on the engine is ethier a 1/4 or 1/2 full and the one i got in the bottom is full.

have a 1970 2dr 510 L-16 , 5 speed dog leg tranny, Weber 2 barrel dcoe 45 9, Cannon manifold, 2 1/2 straight pipe, Matchbox Electric Igniton, 200sx electric coil(Wired right), Stock fuel pump(Had a new one but broke),New dizzy cap and rotor, New fuel line and vent line, New clear house filters(Gets ...

I need some information to keep my 70 510 on the road