I own a 1977 Chevy Caprice w/ a 305 sbc from what i beleve too be a 91 camaro. And the s.o.b is a pain to start when cold. It takes probably 3-5 min of cranking and pumping too start first thing in the morning. It gets down too about 10° at night where i live and the car only sits for about 12 hours at a time. It shouldn't be this hard.
The battery is new.
The starter is new.
The distributer is about 2 years old with new wires
The carb is a Edelbrock proformer 750cfm #1408 with matching intake. Manual choke, rebuilt about 8k miles ago And tuned correctly to my knowledge.
The timing is set to 8° last time i checked
And im going too replace the sparkplugs this weekend and double check the timing while im at it.
Im out of ideas on what could be causing it and hoping you can share some ideas on what i could do or check..