Which bolts should I replace?
Thread Starter
TECH Fanatic
Joined: Jun 2011
Posts: 1,343
Likes: 8
From: Katy, TX
Which bolts should I replace? I searched with no real answers, hopefully someone can help.
I bought an LM7, tore it down and sent the block for machining. Engine should make 450-500hp at the flywheel with no nitrous or FI.
The following fasteners are already being replaced with ARP:
-main cap studs
-head bolts
-rod bolts
My question is, can these OEM fasteners be re-used:
-Cam bolts?
-Crank bolt?
-valve cover bolts?
-intake manifold bolts?
-front/rear engine cover bolts?
-oil pan bolts?
Any help is appreciated, Thanks!
I bought an LM7, tore it down and sent the block for machining. Engine should make 450-500hp at the flywheel with no nitrous or FI.
The following fasteners are already being replaced with ARP:
-main cap studs
-head bolts
-rod bolts
My question is, can these OEM fasteners be re-used:
-Cam bolts?
-Crank bolt?
-valve cover bolts?
-intake manifold bolts?
-front/rear engine cover bolts?
-oil pan bolts?
Any help is appreciated, Thanks!
Some people spring for the ARP balancer bolt, but it's not a big necessity.If you ever plan on pulling the heads off again I'd go head studs instead of bolts. No cleaning the holes for an hour if you have studs. Just my .02 though.
The other bolts aren't necessary.
The other bolts aren't necessary.
It's only $6 for new ARP cam bolts, I'd recommend them!
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Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
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TECH Senior Member
Joined: Feb 2009
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get a new crank bolt.talk to the engine builder about main bolts.use arp main bolts instead of main studs,main studs require honing the crank bore.studs destorte the mains more then just bolts.arp main bolts can handle slot of power.
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I don't see where ARP makes main bolts for LS engines...only studs. I hope I'm wrong though because for the HP level I am going for, bolts would be fine.
Last edited by br408408; Aug 7, 2011 at 02:17 PM.
Thread Starter
TECH Fanatic
Joined: Jun 2011
Posts: 1,343
Likes: 8
From: Katy, TX
thanks for the replies.
main bore has already been honed and ARP studs installed. I don't know if ARP makes main bolts or not, but the machine shop (HKE) recommended the studs.
Thanks for the heads up on the 27mm socket, my tool drawers are already filled with one time use tools, so looks like I'll be adding another.
main bore has already been honed and ARP studs installed. I don't know if ARP makes main bolts or not, but the machine shop (HKE) recommended the studs.
Thanks for the heads up on the 27mm socket, my tool drawers are already filled with one time use tools, so looks like I'll be adding another.
