I used this on my 455 with a ta413 cam and 10:1 compression. It had some mods done to it by a local q-jet guy to work with my setup and was rebuilt at that time. I don't know what was done- q-jets are not my thing. 7044240 800 cfm. It's been sitting for a couple years with my spare parts so im Selling it as is. I will take $130.00 shipped (us only)based on the fact it has sat and I'm not sure if it would need to be opened up. I have a lot more than that into it. I will take Paypal(buyer covers fees).
