Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

Ever heard of these Valve Springs?

Thread Tools
 
Search this Thread
 
Old 10-12-2009, 06:23 PM
  #1  
Launching!
Thread Starter
 
VerdeZ28's Avatar
 
Join Date: Nov 2008
Location: Pembroke pines FL
Posts: 284
Likes: 0
Received 0 Likes on 0 Posts
Default Ever heard of these Valve Springs?

I just bought 2 sets of springs im not sure which they are:

The first is a dark grey single beehive springs with a blue stripe on the side I suspect these are Comp 918s

The others are these:
http://cgi.ebay.com/ebaymotors/PSI-1...item5d2661c9e6

I could post up pics of the others, so any help would be great
Old 10-12-2009, 06:55 PM
  #2  
Launching!
Thread Starter
 
VerdeZ28's Avatar
 
Join Date: Nov 2008
Location: Pembroke pines FL
Posts: 284
Likes: 0
Received 0 Likes on 0 Posts
Default

Actually i think the ones with the blue stripe are these:
http://cgi.ebay.com/ebaymotors/LS1-B...Q5fAccessories
Old 10-12-2009, 08:47 PM
  #3  
Launching!
Thread Starter
 
VerdeZ28's Avatar
 
Join Date: Nov 2008
Location: Pembroke pines FL
Posts: 284
Likes: 0
Received 0 Likes on 0 Posts
Default

anyone knows?
Old 10-12-2009, 09:01 PM
  #4  
TECH Fanatic
iTrader: (9)
 
massls1guy's Avatar
 
Join Date: Nov 2005
Location: Mass
Posts: 1,311
Likes: 0
Received 0 Likes on 0 Posts

Default

I guess I'm not answering your question. But why buy questionable springs off ebay when you can get new high quality springs like these PAC 1218's for a good price:
http://www.sdparts.com/product/PAC12...veSprings.aspx
Old 10-12-2009, 09:05 PM
  #5  
Launching!
Thread Starter
 
VerdeZ28's Avatar
 
Join Date: Nov 2008
Location: Pembroke pines FL
Posts: 284
Likes: 0
Received 0 Likes on 0 Posts
Default

I already bought a set of comp 918, im just wondering about these cause i got them also preatty cheap...
Old 10-12-2009, 09:09 PM
  #6  
Launching!
Thread Starter
 
VerdeZ28's Avatar
 
Join Date: Nov 2008
Location: Pembroke pines FL
Posts: 284
Likes: 0
Received 0 Likes on 0 Posts
Default

I dont think the duals are questionable since they are tested, and the others seem preatty good as well...
Old 10-12-2009, 09:11 PM
  #7  
TECH Fanatic
iTrader: (65)
 
adam1803's Avatar
 
Join Date: Jun 2006
Location: OKC
Posts: 1,188
Likes: 0
Received 0 Likes on 0 Posts

Default

PSI is a well known spring, but i've never seen them used on an LS1. The others i didn't look at too closely, but under item details it says the manufacturer part # is 26918, which would be 918's.
Old 10-12-2009, 11:31 PM
  #8  
Launching!
Thread Starter
 
VerdeZ28's Avatar
 
Join Date: Nov 2008
Location: Pembroke pines FL
Posts: 284
Likes: 0
Received 0 Likes on 0 Posts
Default

Anyone else know of these?
Old 10-13-2009, 07:35 AM
  #9  
TECH Senior Member
iTrader: (4)
 
vettenuts's Avatar
 
Join Date: Jul 2004
Location: Little Rhody
Posts: 8,092
Likes: 0
Received 9 Likes on 9 Posts

Default

For starters, PSI are excellent springs. However, these are used off of a NASCAR engine? Holy crap, if that is the case they are beat. Also, the OD look to be very large, larger then will fit an LSx head. The PSI 1511ML is a beehive valve spring made for the LS motor. They came standard on the Dart heads.
Old 10-13-2009, 09:39 AM
  #10  
TECH Fanatic
iTrader: (2)
 
TooLateVTEC's Avatar
 
Join Date: Apr 2009
Location: FredVegas, Va
Posts: 1,445
Likes: 0
Received 2 Likes on 2 Posts
Default

PSI makes kick *** springs man...but you need to read that whole auction.....they are USED.

F that, buy a new set man...vettenuts gave you the PN for the ones you need.
Old 10-13-2009, 10:49 AM
  #11  
10 Second Club
iTrader: (10)
 
5.3LJimmy's Avatar
 
Join Date: Jun 2004
Location: Napoleonville, LA
Posts: 2,279
Likes: 0
Received 1 Like on 1 Post

Default

I'm not sure what retainer and seat you would use to install those PSI springs and that may be a problem. But the most notable issue is the listed coil bind of the spring in the ad is 1.250. The installed height on an LS1(without machining or longer valves) is usually in the 1.750-1.800 range, which limits that spring to 0.500-0.550 lift.
Old 10-14-2009, 12:10 AM
  #12  
Launching!
Thread Starter
 
VerdeZ28's Avatar
 
Join Date: Nov 2008
Location: Pembroke pines FL
Posts: 284
Likes: 0
Received 0 Likes on 0 Posts
Default

I asked the guy about the single springs and he said they are manufatured by comp cams and are slightly better than the 918, what do you guys think? when i get them in the mail ill take pics and show u guys




All times are GMT -5. The time now is 09:19 AM.