Re: Henry's 55 Constellation

Posted by Cli55er On 2011/8/15 11:33:25

some more progress has been made on the valve springs.

i need 100-110 lbs at 1.75" seated and 200-220lbs at 1.35" open to go with my new cam.

and the inside diameter of the factory spring is 1.1875

i cannot find an aftermarket spring with that inside diameter and those listed specs.

but i did find something very close that may work.

lunati 73949 http://www.lunatipower.com/Product.aspx?id=458&gid=189

its a dual spring setup with 120lbs at 1.650 seated and 265lbs at 1.250 open.

the inside diameter of the spring is .750 so i will have to cut the spring seat on the heads to match. i can buy a spring seat cutter with guage in 3/8" size and use my drill. the only one i can find is a .630" inside cut. they are about 65 bucks all together so i may just take my heads into the machine shop again. booo

but when they are installed a the height for Packard the lbs rates should drop some, creating what i need to go with this cam.

i have informed Jack about these springs and he is looking into them as well.

they have good keepers and locks that you can buy with them also.

lunati 75702 and 77004

the set is not cheap...coming in at just under 200 bucks, but they are a great alternative from the specs.

Hank