CamaroZ28.Com Message Board

LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

What springs do I need for a gm847?

Thread Tools
 
Search this Thread
 
Old Jan 23, 2005 | 12:48 PM
Share
  #1  
Kurt Crosbie's Avatar
Kurt Crosbie
Thread Starter
Registered User
 
Joined: Sep 2003
Posts: 1,726
From: Charlotte, NC
What springs do I need for a gm847?
The guy i bought the motor from told it has 1.6rr's, comp lifters, springs, etc., but he didn't give me exact specs.

I really need to know what springs to get. I think I have 977's but I'm not sure.
Reply
Old Jan 23, 2005 | 03:21 PM
Share
  #2  
94GreenZ28's Avatar
94GreenZ28
Registered User
 
Joined: Aug 2001
Posts: 154
From: Perrysburg, Ohio
Re: What springs do I need for a gm847?
987 should be good. I'm using them on my 306
Reply
Old Jan 23, 2005 | 04:40 PM
Share
  #3  
Spinner's Avatar
Spinner
Registered User
 
Joined: Jul 2003
Posts: 2,945
From: Fort Benning, GA
Re: What springs do I need for a gm847?
977s are biiiig springs, but will work. I'm having great success with 985s.
Reply
Old Jan 23, 2005 | 08:01 PM
Share
  #4  
Kurt Crosbie's Avatar
Kurt Crosbie
Thread Starter
Registered User
 
Joined: Sep 2003
Posts: 1,726
From: Charlotte, NC
Re: What springs do I need for a gm847?
yes, but what kind of lifters are you using?
Reply
Old Jan 23, 2005 | 09:09 PM
Share
  #5  
Spinner's Avatar
Spinner
Registered User
 
Joined: Jul 2003
Posts: 2,945
From: Fort Benning, GA
Re: What springs do I need for a gm847?
875s. At this point with spring pressure you kind of have to upgrade to the stronger lifter.
Reply
Old Jan 26, 2005 | 07:09 PM
Share
  #6  
ZPaul2Fresh8's Avatar
ZPaul2Fresh8
Registered User
 
Joined: Feb 2002
Posts: 1,106
From: Toledo, Ohio USA
Re: What springs do I need for a gm847?
Originally Posted by 94GreenZ28
987 should be good. I'm using them on my 306

Long time no see Nick
Reply
Old Jan 26, 2005 | 07:30 PM
Share
  #7  
camaroKid223's Avatar
camaroKid223
Registered User
 
Joined: Dec 2002
Posts: 457
From: Wilm, DE
Re: What springs do I need for a gm847?
im going to try the kmotion k-800's for my 847 i think
Reply
Old Jan 27, 2005 | 09:08 AM
Share
  #8  
Kurt Crosbie's Avatar
Kurt Crosbie
Thread Starter
Registered User
 
Joined: Sep 2003
Posts: 1,726
From: Charlotte, NC
Re: What springs do I need for a gm847?
Is there any telling what kind of springs this guy put in, given that he had the bottom end forged and was using a 250 shot of gas?
Reply
Old Jan 27, 2005 | 01:53 PM
Share
  #9  
atljar's Avatar
atljar
Registered User
 
Joined: Feb 2001
Posts: 3,068
From: Cincinnati, Ohio
Re: What springs do I need for a gm847?
Measure the pressure on them, coil bind etc. Nothing you can do without having some specialized tools. Any engine builder in the area should be able to help you out.
Reply
Old Jan 27, 2005 | 04:50 PM
Share
  #10  
Kurt Crosbie's Avatar
Kurt Crosbie
Thread Starter
Registered User
 
Joined: Sep 2003
Posts: 1,726
From: Charlotte, NC
Re: What springs do I need for a gm847?
thanks. i'll do that
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Spraying 95 z28
95z28man7
N2O Tech
3
Aug 16, 2015 10:58 AM
Day and Twilight racing @ Streets of Willow July 25th $90 @ Streets of willow - Jul
Louey
Pacific
0
Jul 21, 2015 10:06 PM
WTB: 1.6 Roller Rockers
9t4lt4z28
Parts Wanted
1
Jul 19, 2015 06:16 PM
Cam for 93 LT1
Z28amustangklr
LT1 Based Engine Tech
0
Jul 18, 2015 11:05 AM
Forged Lunati 383 crank, Mahle piston rings, Isky endurance dual springs
Catmaigne
Parts For Sale
0
Jul 14, 2015 05:17 PM
Back to Subforum
LT1 Based Engine Tech
View Next Unread
lt4 intake




Advanced Search

All times are GMT -5. The time now is 10:00 PM.