351W questions

Hey guys, im on stangnet quite often reading the fourms and such, dont post a whole lot, but heres my question last year my motor 351W had a holley street dominator single plane intake, 1.6RRs unknown cam. 1970 W heads etc

i switched over to my mods in my sig, but i reused the same pushrods and rockers, took the car out and it does have balls, but it doesnt seem to run as strong as last year, i was told to buy the recommned valve springs for the cam, so i have them waitng to be put in.

last year at the track i ran a 13.6@ 103.94 on street tires, a few years back the car ran 12:80s on slicks owner before me. It had solid lift cam and lifters, i beleive the cam was a comps cam 282 S or somethign along those lines, i know if i put slicks on my car it wont go to 12:80s i was wondering whats so much better about solid lift, i was going to put them back in but its my DD too, and i was told you have to adjust them often.

these are my cam specs also, i was thinking maybe it has something to do with the cam
Int Exh
ADV Dur: 272 286
Dur @ .050: 230 236
Valve lift: .519 .523
Lobe sep: 110.

i was wondering if that is enough cam for the 1.6's

first races for the year are june 23/24th im going to run the car on all motor on slicks, and then run with the 150 shot, should be fun

sorry for the post i know it might not make sence, im not good with wording stuff proerply, bare with me..! thanks alot

i can deal with adjusting 2-3 times a year, it isnt that hard....my 60 fts last year were 2.1's on street tires best was a 13,6@103.94 and a 13.8!

do you need to change the valve springs from solid to hydrolic? maybe the guys never ever did this when they swaped to hydrolic lol

also my valve springs, which im not even sure if they were replaced when the guy owned the car, but if so they would be about 8 years old, and the car was not driven easy