I have these heads: Material: A356-T61 aluminum Combustion Chamber Volume: 64cc CNC-profiled Intake Port Volume: 195cc Intake Port Dimensions: 1.28" x 2.09" Intake Port Location: Stock Intake Valve Diameter: 2.02" Intake Valve Angle: 23° Intake Valve Seat: Tungsten alloy Intake Valve Length: 4.96" Intake Valve Stem Diameter: 11/32" Exhaust Port Volume: 72cc Exhaust Port Dimensions: 1.35" x 1.5" Exhaust Port Location: Stock Exhaust Valve Diameter: 1.60" Exhaust Valve Angle: 23° Exhaust Valve Seat: Tungsten alloy Exhaust Valve Length: 4.98" Exhaust Valve Stem Diameter: 11/32" Valve Guide Material: Bronze alloy, intake Bronze alloy, exhaust Valve Guide Length: 2.0" intake, 2.25" exhaust Valve Guide Clearance: .0012" intake, .0016" exhaust Valve Guide Spacing: 1.910" Valve Seals: Viton, .500" i.d. x .700" o.d. x 11/32" stem Valve Seat Angles: 37° x 45° x 52° Valve Spring Pocket Diameter: 1.615" for valve springs with spring cups 1.500" for two center valve springs using locators Valve Spring Cups: 1.48" x 1.61" x .060" Valve Spring I.D. Locators: Used on two center valve springsfor bolt clearance Valve Spring Retainers: 7° x 1.437"-1.50" o.d. chromemoly steel Valve Stem Locks: 7° + .050" machined steel Valve Springs, Option 2: 1.470" o.d. single with damper 120 lbs. @ 1.780" installed height 300 lbs. @ 1.280" open 360 lbs. per inch rate .540" maximum valve lift Guideplates: For use with 5/16" pushrods Rocker Arm Studs: ARP 3/8"-24NF x 7/16"-14NC x 1.895" Rocker Arm Type: Stud mount roller rocker arms recommended Weight: 22 lbs. each, bare I am currently running the LT4 Hot Cam with Crane Gold Race 1.6rr. I want more power. Now I was thinking I could use these Trickflow springs: Valve Springs 1.460" o.d. double with damper 125 lbs. @ 1.780" installed height 376 lbs. @ 1.180" open 420 lbs. per inch rate .600" maximum valve lift To get my valve lift up to .600. These are a more expensive option on the heads I have from Trickflow. I was also thinking about using this Trickflow cam #31402002: Cam Style Hydraulic roller tappet Basic Operating RPM Range 3,500-7,000 RPM Intake Duration 050 inch Lift 246 Exhaust Duration 050 inch Lift 254 Advertised Intake Duration 308 Advertised Exhaust Duration 316 Intake Valve Lift with Factory Rocker Arm Ratio 0.558 Exhaust Valve Lift with Factory Rocker Arm Ratio 0.558 Lobe Separation (degrees) 112 Now with 1.5 ratio rockers the cam's lift is .558 on I/E. With 1.6 ration rockers I figured it would be .595 lift on I/E. Is this correct and will the springs be able to take that? I am also goning to replace the timing chaig since I am there and I decided to use this one: CompCams 3116 Hi-Tech Roller Race, Double Roller, Steel Sprockets, Chevy Small Block V-8/90 Degree V-6, Set Now my question is...Now my question is will these parts work well together with the motor/setup in my sig? Are any of these parts not a good deal as far as quality? Is there something better from Comp, Crane, etc. as far as springs and such. Also I am just figuring that I will just swap the spring out with the new ones using the same hardware on the heads. Do I need to reshim or can I just swap them in? Thanks!!

or maybe that might be a bit to much cam....this one looks a bit better with 1.6 rocker.
Vendor Trick Flow Specialties
Product Line Trick Flow Track Heat Camshafts for Small Chevy
Cam Style Hydraulic roller tappet
Basic Operating RPM Range 2,800-6,300 RPM
Intake Duration 050 inch Lift 230
Exhaust Duration 050 inch Lift 234
Advertised Intake Duration 292
Advertised Exhaust Duration 296
Intake Valve Lift with Factory Rocker Arm Ratio 0.528
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.539
Lobe Separation (degrees) 110
With 1.6rr it would be .563/575
I would really like a 112LSA tho so it would be a bit better at idle on the computer???