What's a good hydraulic cam for a mild 2v 351C?
How "crazy" can I go?
I have a mild 351c in my Cougar convertible, mild being defined as 9:1 compression (as far as I know), dual plane Edelbrock Performer intake, Crower Baja Beast hydraulic cam, Edelbrock 600cfm carb, Mallory magnetic breakerless ignition (mechanical advance), headers, and essentially stock 2v heads.
I’m getting some bad vacuum flutter which I think may be a burnt exhaust valve. The engine also seems to be considerably down on power. I’ll probably pull the heads off to give them a once over at the machine shop.
When the motor was rebuilt, it had a Baja Beast stump puller cam installed*, one that I was not very impressed with up top. I’d like something more, but I want to know how far I can go with the cam before everything is mismatched. A nice grind that pulls hard to 6k RPM would be perfect.
The car currently has a stock FMX transmission with stock stall converter too :(, and a 3.89:1 geared 9” rearend. Future plans will be an AOD swap with more stall (maybe 2500 or so)
The car is a street car so I know I can’t go too crazy. I don’t expect to hang with LS1s, but I’d like to make more power over 4k rpm.
My questions are:
1) What cam should I use?
2) Will I need new springs?
3) Is there any minor port work I could have done to wake up these 2v heads?
Thanks for your input.
*Existing cam specs:
Crower Baja Beast
Power range: 1200-3800rpm
Advertised duration: 258/264 (in/ex)
Duration @ 0.050”: 200/210 (in/ex)
Gross lift: .477”/.486”
1973 Cougar XR-7 convertible - 351C, 9:1 CR, 2V heads, Crower Ultra Beast, Weiand X–CELerator, 600CFM Edelbrock Performer, Dynamax long tubes, stock FMX, 3.89s w/ Detroit Locker