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Cam & Intake Manifold Replacement

I will be doing a little surgery on my 351C this winter as I suspect I have a compressed lifter (I have always had a "ticking" noise/ hot or cold, typically at lower RPMS. Since I will be taking the intake off, I was considering replacing it. I may also replace the cam, as the one I have is pretty "mild" and I'd like something with a little more PUNCH. Here are the specs on my engine (reported by previous owner):

4-Bolt D1 Block
Boss Rods
Boss 351 Heads (D1-2X)
SpeedPro 0.030" over 10:1 Pistons (Boss design)
Crank cut 0.010"
Crane 272H10 grind cam
Crane Gold Roller Rockers and roller lifters
700 CFM Holleyw/Mech Secondaries
Edelbrock 4V Performer Intake
Headers with 2" Stainless Mufflers (similar to PI Power Packs0

DynoJet Chassis Dyno showed:
312 BHP @ 5700 RPM
327 ft-lb Torque @ 4000 RPM

I think I have a solid base for a much higher HP engine and was thinking about a Blue Thunder Intake and changing the cam.

I would like a "streetable' engine with 400+ HP.

Any suggestions?

Swen
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