[Brent Flynn]

Originally Posted by 67cruiser

Believe me guys i know and wish i can get it to 102or3 mph. I am told by alot of racers a hydralic cam slows you down like big time but to be truthfull i like the low maintanance issue. Now im not lazy but i love starting the car driving it on the trailer take it off and if i had to drive it home. My Grower cam 60916 with 1.5 rockers MAY be the issue here. Also i personally fill my car shoots straight out without spinning as far as i can tell. I have adj. upper arms in back and boxed lowers with air bags no air. Lobe separation is 112 degree,s.
I really want to change my headers after my new axles come in and new 90/10 shocks are on the car. Im open for ideas and thoughts and read them all. Rich

Hydraulic cams work just fine... the cam that's in my '62 , is an Ultradyne, around .497/.507 lift... 230/240ish duration...it ran over 120 in my brother's GTO, with Iron Dport heads... and we didnt degree it... its in the 62 ,now, with stock #48's, and its not been degreed, either... not saying that it wouldnt help... Yours could be off a tooth(on the chain), possibly.... I know that i have a 455 in the 62, but im carrying almost 500 more pounds , than your car, and it runs 108-109 in Spring and fall...i managed 107 at Norwalk 2012... It has trws, 3 tube headers, unported heads, stock rockers and pushrods, cloyes chain, 3.90 gears, 28.5x9'' slicks, shift at 5300...it was a throw together, spare parts deal... it shouldnt run as good as it does... It 60fts 1.57-1.58 in good air...1.62 in really bad air... First two things i'd check(assuming that total timing is set around 36* : 1) THrottle open all the way 2)Cam timing(could possibly be off a tooth, or just several * off, due to stack up, from crank keyway to gear key to cam key to cam gear(its worth checking, i know this 1st hand)... and if all that checks out, I'd be trying to get on a GOOD track, work on 60fts and maybe put some richer rods in the secondaries... Is there a choke on this carb? Are you sure its not causing some sort of problem? Or is there some other restriction(air)? I believe you should be in the 1.7-1.8 60ft range, to run 13.20s(remember, i saw that pass, and you spun way out in low gear)... I believe you have the torque to get there, but for some reason, you are losing HP, or not able to take advantage of the HP that you have, on further down the track... thus, the missing 3-4mph...