Ok just to let you guys know the vauxhall went 13.6 @ 99mph.

What is a slightly stronger valve spring i can just chuck in as any time under 14.5 for the day i had a terminal speed of 99mph due to valve float!

Don't know what your cam specs are but John Mummert has various rates from 95# to 115#. Scroll to bottom of page.

"The Master Cylinder"

Enjoying life at the beach in SOCAL

Thats looks awsome! Where do you run? Chuck

Y's guys rule!
Looking for McCullouch VS57 brackets and parts. Also looking for 28 Chrysler series 72 parts. And early Hemi parts.

MoonShadow, 292 w/McCulloch, 28 Chrysler Roadster, 354 Hemi)
Manchester, New Hampshire

We have revved our turbocharged Y up to 7000 rpm with single springs without damper springs that came with the set of these. These are for Small Block Ford, but work ok with Y.

Comp Cams 942-16

Batch number 38822

seat load 115 lbs @ 1.700"

open 284 lbs @ 1.200"

spring rate 339 lbs/in

coil bind 1.125

 Seppo from Järvenpää, Finland
www.hollowheads.net (just click the hole in the head to proceed)

 

Same springs I use and go to 7000 and beyond all the time.

   God Bless.   Tim                           http://yblockguy.com/

350ci Y-Block FED "Elwood", 301ci Y-Block Unibody LSR "Jake", 312ci Y-Block '58 F-100, 338ci Y-Block powered Model A Tudor

tim@yblockguy.com  Visalia, California    Just west of the Sequoias

Tim, do you mind to reveal how far beyond you have gone? With or without damper springs?

 Seppo from Järvenpää, Finland
www.hollowheads.net (just click the hole in the head to proceed)

I leave the dampers in and have run it up to 7300 in first or second, not much point to it though, it doesn't pull real strong after 7000. .585" lift if you want to know.

   God Bless.   Tim                           http://yblockguy.com/

350ci Y-Block FED "Elwood", 301ci Y-Block Unibody LSR "Jake", 312ci Y-Block '58 F-100, 338ci Y-Block powered Model A Tudor

tim@yblockguy.com  Visalia, California    Just west of the Sequoias