Need advice on spring choice

[wordy777]

I dont know much about installed spring height, I wanted to get some good springs for .7 lift with titanium retainers.
Would these work with my Proaction alum heads?

Manley NEXTEK valve springs pt # 221440P-16
.700" (max lift) 1.570 (o.d) .760 (installed height / pressure) 255 @ 2.000 534 1.190= coil bind. double with damper 629 @ 1.300 (open pressure) they come complete with Delwest Titanium SUPER 7 retainers and locks
I will provide any additional info

[Mike Stark]

Take a look at Crane 96886-16 as well. 260 at 2" and 700 open. Works up to .750 real well. Comp 732-16 retainers fit 'em good too.

[wordy777]

I better post my engine and car since i need some help getting new valve springs, titanium retainers, roller rockers, and roller lifters.
I have 3200lb Corvette with 383 sbc, comp cams hyd roller 236/242@.050, Proaction alum 200cc heads, Yank 3500 stall, 700r4, and getting 3.54 gears, also have Demon 850 mech. I will post some questions as i dont really have a friendly machine shop near that can answer performance questions. I want to ditch the 1 5/8 longtubes and get new ones, what size tubes do you recommend

[Mike Stark]

Stay away from the springs I listed if you are running a hyd. roller. You will need much less spring for that. I have a nice conical package that will give you the right pressures without all of the extra weight. Call me if you like [phone]