Spring Pressures

Chipper Chapman · 05-23-2017, 11:03 PM

New cam going into our 454/365/355 this week, and I'm wondering if we have enough spring pressure. Springs are testing the same as when I put them in, only about 50 passes on it but the cam was used and outdated when we built the engine. It's a .460/.480 lift with current springs setup to be 200# on the seat, 390/400# over the nose. I've recently heard of setting springs up so they are within .050 of coil bind over the nose which would net me around 460-470#. Also it is getting solid lifters. Does any of this seem to be in the ball park or should we be going for more?

Jim Hanig · 05-26-2017, 12:06 AM

If you have tool steel or smith lifters 200 should be good.

05-23-2017, 11:03 PM	#1
Chipper Chapman Member Join Date: Jan 2004 Location: Belmont N.S. Canada Posts: 473 Likes: 246 Liked 166 Times in 71 Posts	Spring Pressures New cam going into our 454/365/355 this week, and I'm wondering if we have enough spring pressure. Springs are testing the same as when I put them in, only about 50 passes on it but the cam was used and outdated when we built the engine. It's a .460/.480 lift with current springs setup to be 200# on the seat, 390/400# over the nose. I've recently heard of setting springs up so they are within .050 of coil bind over the nose which would net me around 460-470#. Also it is getting solid lifters. Does any of this seem to be in the ball park or should we be going for more? __________________ Chris Chapman 1969 Chevelle NHRA F-G/SA 1090

05-26-2017, 12:06 AM	#2
Jim Hanig Senior Member Join Date: Aug 2006 Location: Pukwana SD Posts: 860 Likes: 554 Liked 99 Times in 49 Posts	Re: Spring Pressures If you have tool steel or smith lifters 200 should be good.