I have 600cfm Holley 4160 Quad barrel carb feeding my 302 recently fitted with a Comp Cams H282 hydraulic roller cam, Edelbrock RPM Performer heads & Inlet plus roller rockers.
I had the car up to the (only) rolling road in Cumbria and it is now running well but the chap who has the rolling road is very familiar with Webers - but not Holley's so is struggling a bit. At present the carb is running a bit rich below 4500 but more crucially running a little lean from 4500 to 6250 (as the cam, head and inlet really start to work together!). If we increase the fuel jet size we will run in to 'overly rich misfires' below 4500.
On a Weber you would reduce the size of the air bleed but this is fixed on the 4160 Holley - can anyone give some guidance on what to work with on the Holley to richen things up above 4500 rpm?
Many thanks in advance!!!
Dave
I had the car up to the (only) rolling road in Cumbria and it is now running well but the chap who has the rolling road is very familiar with Webers - but not Holley's so is struggling a bit. At present the carb is running a bit rich below 4500 but more crucially running a little lean from 4500 to 6250 (as the cam, head and inlet really start to work together!). If we increase the fuel jet size we will run in to 'overly rich misfires' below 4500.
On a Weber you would reduce the size of the air bleed but this is fixed on the 4160 Holley - can anyone give some guidance on what to work with on the Holley to richen things up above 4500 rpm?
Many thanks in advance!!!
Dave