needing to buy a new carb
#11
like everyone else has been saying a 4barrel is only more fuel efficient if you can keep you foot off of it but speaking from experience it is extremely hard. when i got my 81 it had a holley 850cfm double pumper which could dump gas quick. never actually drove it on the road with that 850 on there but i am glad someone gave me a 570cfm holley. on average i only get about 10mpg with it on there. i got a carter carb sitting in the basement that i am thinking about trying next.
#12
#14
#15
the truck came with the intake but from the numbers on it i think it might have came off of a 360. since the engine is from a 85 i was not too worried about the ports on the heads being smaller than the ones on the intake. i think in the 80's they started using the same heads but different size valves between the 318's and 360's. not too sure where a 77 318 falls. there is an adapter on my intake to go from carter 4barrel to Holley 4 barrel but that is it.
#16