I've got an ex-Indy Lights (non-turbo) Stage II engine for road racing. Ultimately I'll use the unique cast magnesium intake trumpets (one per cylinder) and high pressure fuel injection but for starters and to make life easier I'm thinking of using a Holley 4bbl same as or similar to the NASCAR V6s. Once the car is running OK we can fiddle with the injection and mapping etc.
Anyone know what carb they used for the NASCAR V6s?
I just visited the Holley web site and after plugging in my parameters they recommended a 4150HP series - in one of two specifications - one rated at 390 cfm, the other at 600 cfm, and the range goes up to 1000 cfm. That's quite a range!! How does one choose a flow rate? I calculate 252 CID at 7200rpm red line to be 1021 cfm. Why would I not need a carb that flows that amount?
Any help or advice appreciated - Derek
Anyone know what carb they used for the NASCAR V6s?
I just visited the Holley web site and after plugging in my parameters they recommended a 4150HP series - in one of two specifications - one rated at 390 cfm, the other at 600 cfm, and the range goes up to 1000 cfm. That's quite a range!! How does one choose a flow rate? I calculate 252 CID at 7200rpm red line to be 1021 cfm. Why would I not need a carb that flows that amount?
Any help or advice appreciated - Derek