96 LT1 valve spring pressure

Mike Savelle · 11-11-2017, 05:37 PM

What’s the minimum spring pressure for a stocker with roller cam ?

Rich Biebel · 11-11-2017, 08:04 PM

It’s been a while since I had one but I think I had no more than 140lbs on the seat on the LT-1 I built. Probably less but I can’t recall. Single stock diameter spring with a dampener. Replaced springs after some time after finding brown dampners one day on some springs. Springs choices today are probably better. I am not even up on what’s legal in Stock as far as spring size.

Dan Fahey · 11-11-2017, 10:30 PM

Quote:

Originally Posted by Rich Biebel

It’s been a while since I had one but I think I had no more than 140lbs on the seat on the LT-1 I built. Probably less but I can’t recall. Single stock diameter spring with a dampener. Replaced springs after some time after finding brown dampners one day on some springs. Springs choices today are probably better. I am not even up on what’s legal in Stock as far as spring size.

I like Howard Electropolished drop in spring the best.
PN 98215

Lee Valentine · 11-12-2017, 06:49 AM

I used to run 175# minimum on my stocker.

Rich Biebel · 11-12-2017, 08:45 AM

Quote:

Originally Posted by Dan Fahey

I like Howard Electropolished drop in spring the best.
PN 98215

I may have used those myself. That was 10 years ago. Can't really recall...

Mike Savelle · 11-12-2017, 09:45 AM

does anyone know the spring rule in stock now ?

JHeath · 11-12-2017, 12:38 PM

Any valve spring, as long as head isn't modified.

Rob Petrie E395 · 11-12-2017, 08:25 PM

The heads I have (96 LT1) I bought used. They had the Howard's Springs on them when I bought them. I have the PAC 1409X on it now. They are probably better but I can't say for sure one way or another. I have something wrong somewhere in the car and can't figure it out. Wish I could be more help.

I'm at 180 on the seat.

tomcraig · 11-14-2017, 08:54 PM

185 on the seat. Pac 1409.

11-11-2017, 05:37 PM	#1
Mike Savelle Member Join Date: Dec 2001 Location: Ontario Canada Posts: 358 Likes: 101 Liked 6 Times in 4 Posts	96 LT1 valve spring pressure What’s the minimum spring pressure for a stocker with roller cam ?

11-11-2017, 08:04 PM	#2
Rich Biebel VIP Member Join Date: Jun 2007 Location: Northern New Jersey suburbs Posts: 2,275 Likes: 25 Liked 510 Times in 200 Posts	Re: 96 LT1 valve spring pressure It’s been a while since I had one but I think I had no more than 140lbs on the seat on the LT-1 I built. Probably less but I can’t recall. Single stock diameter spring with a dampener. Replaced springs after some time after finding brown dampners one day on some springs. Springs choices today are probably better. I am not even up on what’s legal in Stock as far as spring size. __________________ Rich Biebel S/C 1479

11-12-2017, 06:49 AM	#4
Lee Valentine Senior Member Join Date: May 2004 Location: Brookfield, CT Posts: 708 Likes: 13 Liked 322 Times in 68 Posts	Re: 96 LT1 valve spring pressure I used to run 175# minimum on my stocker. __________________ Lee Valentine 1661 STK

11-12-2017, 09:45 AM	#6
Mike Savelle Member Join Date: Dec 2001 Location: Ontario Canada Posts: 358 Likes: 101 Liked 6 Times in 4 Posts	Re: 96 LT1 valve spring pressure does anyone know the spring rule in stock now ?

11-12-2017, 12:38 PM	#7
JHeath Senior Member Join Date: Jul 2004 Location: Minneapolis Posts: 788 Likes: 2,890 Liked 370 Times in 102 Posts	Re: 96 LT1 valve spring pressure Any valve spring, as long as head isn't modified. __________________ Jerry Heath I/S '93 Cobra FS/J 2010 Mustang "Ebay CJ"

11-12-2017, 08:25 PM	#8
Rob Petrie E395 VIP Member Join Date: Dec 2007 Location: Woodlawn IL Posts: 1,093 Likes: 162 Liked 219 Times in 79 Posts	Re: 96 LT1 valve spring pressure The heads I have (96 LT1) I bought used. They had the Howard's Springs on them when I bought them. I have the PAC 1409X on it now. They are probably better but I can't say for sure one way or another. I have something wrong somewhere in the car and can't figure it out. Wish I could be more help. I'm at 180 on the seat. Last edited by Rob Petrie E395; 11-20-2017 at 05:38 PM.

11-14-2017, 08:54 PM	#9
tomcraig Junior Member Join Date: Sep 2013 Posts: 16 Likes: 0 Liked 0 Times in 0 Posts	Re: 96 LT1 valve spring pressure 185 on the seat. Pac 1409.