some of you know of my truck by now. 1980 4X4 dually with a 520 torque 460 motor. do you guys know if a 514 stroker crank would affect smog at all? i already have a problem with smog.

 

Thread moved to "385 Series-370, 429, 460" Forum. Should be able to have more responses to your question here.

Thanks

 

unless they check CID the emissions should be based on external equipment, and emissions out the exhaust, and thats a matter of tune rather than displacement.

 

Where in the "middle of nowhere" do they have emissions testing? I live less than 40 straight line miles from Seattle and there are no emissions are any teting at all.

 

in this truck, it originally came with a 400, and the previous owner swapped it with a 460 without taking it to a referee station and getting it checked out. every time i took it to get smogged, they always ask me if its a 400 or a 460. none of them checked it though. it failed smog twice. 1st time it was too rich, 2nd time it was too lean. the metering block is all messed up. i put 4 carbs into 1 and i thought it would work. guess not. Summit wants a new smog legal carb for $280, and i think thats a hella good deal. what do you think?

 

I think an emissions carb is not the way to go. A good Holley 4 barrel 600 cfm carb with a list number of 1850 will adjust better and you will probably need to retard the initial timing a bit. I used to get my 428CJ to pass with ease with a 406 six-pack on top of the engine and the smog pump disconnected (attually it was gutted. They were looky loos about that sort of thing. Of course all they saw was a big air cleaner. You still didn't say where the "middle of nowhere" is that requires emission testing.

 

i live in Knightsen, Califorina. a small drinking community with a farming problem. the carb Summit wants is a Holley 600. thats what carb goes on that truck for smog. as soon as i get it to pass smog, my sisters boyfriend is giving me his Edelbrock 750 off his 68` Charger. that 600 is starving my truck, so i think that 750 will be fine