Head Bolts

MechMan

MechMan

Apprentice
Sep 13, 2018
74
3
8
Long Island NY
#1
I am planning on building and LS3 and I think I have most of the big parts speced out. I am now turning mu attentio to the bolts and fasteners I will need. What head bolt or studs does everyone recomend for the LS3? I was lookinf at ARP but I can't find any for the 6.2 other than the LS9 and LS7. The LS7 should work on the LS3 right?
 
Turbolq4

Turbolq4

G-Body Guru
Sep 25, 2017
847
788
93
Boise Idaho
#2
Stock bolt work very well. I saw a breakdown of the clamping force generated by stock, arp, and some random studs. Not enough difference to warrant the trouble.

Pretty sure those blocks use the same head bolts.
 
MechMan

MechMan

Apprentice
Sep 13, 2018
74
3
8
Long Island NY
#3
Ok, Good to know. People were saying the studs were better than the bolts and I knew ARP is a good company. Not a big fan of TTY but I dont expect to be pulling the heads off very often so it really doesnt matter.
 
TURNA

TURNA

Geezer
Jul 24, 2009
5,281
3,183
113
Socialist NY
#4
Factory GM
 
Turbolq4

Turbolq4

G-Body Guru
Sep 25, 2017
847
788
93
Boise Idaho
#5
Studs actually have less clamping force than the stock bolts.
 
M

Michael Watts

Greasemonkey
Dec 12, 2017
233
77
28
#6
I have found that ARP is the best bolts out there.
 
Streetbu

Streetbu

G-Body Guru
Supporting Member
May 22, 2011
667
729
93
Central NY
#7
Factory, matter of fact, reuse the old TTY bolts. Torque to 72lb and you're good to go. Matt Happel, aka, Sloppy Mechanics reused his old bolts several times and made 1,092hp at the rear tires with used TTY bolts!
 
Turbolq4

Turbolq4

G-Body Guru
Sep 25, 2017
847
788
93
Boise Idaho
#8
I'm sure someone won't like this bit of advice either but that's ok.

I have reused the same LS7 head gaskets and two different sets of head bolts on four different engines, being apart and reassembled no less that ten times. 15 pounds of boost+rev limiter has to be really hard on them but I've had no issues. Factory head bolts.

I had some chinesium studs and had one of the small bolts stretch and refuse to torque.
 
Northernregal

Northernregal

Master Mechanic
Oct 24, 2017
373
676
93
Red Deer AB
#9
Even a new set of stock TTY bolts is dirt cheap. 55ft/lbs is about what the TTY spec ends up being. A quick google search with show lots of info on that. Matt Happel also proved it with a really fancy snap-on torque wrench.

That being said I went with ARP studs because.... well the 12 points look cool on instagram pics.
 
TURNA

TURNA

Geezer
Jul 24, 2009
5,281
3,183
113
Socialist NY
#10
Hope you removed the heaterA/C box cause there aint no way you are going to be able the get the head on or off with studs
 

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