5_LTR_ETR

I ordered ARP bolts part number: 100-1201. These are 12 point 3/8" bolts with 3/4" threads. are these going to work or do I NEED to get 1 inch bolts? the headers are the ebay LPP copies with a 3/8 flange. I'm considering safety wiring the bolts, so will this be at least good enough until I can get 1 inch locking bolts shipped? or if I wire them do i even need the 1 inchers? auto parts store up here in canada wants $93 for the set screw type locking bolts... not quite in my budget range.

RamAir95TA

iTrader: (2)

Just get a standard 1" ARP 12-point bolt (with a 5/16" head) and call it a day. They are 3/8"x16.

5_LTR_ETR

well if i get new bolts I would like to order locking bolts just to be safe. However the headers on going on wednesday/thursday one way or another so should I take what ever 1" bolt I can find locally or are the 3/4" bolts gonna get me by till i cant have the locking ones shipped? The option of just driving down the road and getting arp bolts isnt realistic for me.

hitmanws6

iTrader: (20)

Im using off the shelf 1 inch grade 8 header bolts from Autozone with no issues

wrd1972

iTrader: (12)

97lt1camaro

iTrader: (3)

I wouldnt bother with the locking header bolts. They are a pain in the *** to work with. I spent the money on them and ended up just using the factory bolts my pacesetters came with. After one heat cycle, i never had to tighten them again, and i check them every oil change

5_LTR_ETR

Ok thanks everyone I'm convinced I'll go with the 1" ARP bolts. Can anyone tell me if the 3/4" bolts will get me by till I can get my hands on the new bolts?

Rob

iTrader: (6)

Yes, they will get you buy. You just might have to keep tightening them until the 1" bolts come.

5_LTR_ETR

Thanks Rob. Just what I wanted to hear.

GREGG 97Z

iTrader: (4)

Much less chance of stripping the threads in the head going with a 1" over 3/4". Plus more grip, less chance of them backing out. I used 1" ARP's with my SLP mids and they rarely ever need tightening, no locks.

RamAir95TA

iTrader: (2)

Same here Gregg. I have the ARP 1" bolts and installed them when I did my motor. They have remained tight for the past year and a half.

LarsV8

I used the stage 8 one inch locking bolts. I found the Allen heads to be extremely useful in such a cramped space.

97pontta

iTrader: (10)

I'm not sure what major fastener chains are in Canada but I used Stainless Steel 3/8-16 X 1 Socket Head Cap Screws from Fastenal and they worked great. Had them in since 03 and after the first few heat cycles and tightening them they never backed out. Price was cheap too, around $30 total. I also like the socket heads over the hex as well.

Fazz73jr

iTrader: (3)

I originally bought arp 3/4" header bolts for my eBay headers. They'll work but did not grab enough meat to where I felt comfortable. So I snatched my dads stage 8 1" locking bolts cause I was to impatient to order 1" arp's. The stage 8's are nice and I've never had to retighten them, but what a PITA! Get some 1" IMO.

5_LTR_ETR

This is exactly what I found earlier today. Picked them up for 33 dollars. Not the best deal but Nobody in town can get ARP bolts before I head outa town to my uncles shop. Just gotta hope I can find a ball end hex driver that will reach the angle needed to get past the tubes on the headers. One of them is gonna be almost 45 degrees and as far as I know these drivers only work upto 25 degrees. I have a heavy hand so I hate the thought of trying to torque these things with an allen key. For anyone else in the same situation... Do Not use 3/4" long bolts. After actually putting one through the flange theres no way I would risk stripping the head threads with the few threads that came through. Even without the washer and gasket added to the mix

97pontta

iTrader: (10)

What worked out really well for me is those open end wrenches with the ratcheting closed end. I used a 5/16 ratcheting wrench and had a few different lengths of allen wrenches. I went to the hardware store and purchased 5/16 allen wrenches individually and cut the 90 degree portion off and cut them to a few different lengths. This allowed me slide the ratcheting wrench over the allen hex and use the wrench to drive the allen to tighten the bolts. I was able to get them much tighter this way and easier due to the ratcheting wrench having a much shorter stroke.

5_LTR_ETR

Thanks! this is a great idea. i went to fastenal today and bought the same bolts in a pack of 25 for 13$... took the first 12 back for my $33 dollar refund.

85CamaroZ28

iTrader: (7)

Do you guys have the part number from fastenal? There is a local shop nearby that I would like to pick them up from.

5_LTR_ETR

donno the part number. 3/8 - 16 x 1" Hex socket cap screws is wut you need. in hind sight i would strongly recommend that you do not use allen head type bolts. it made things much more difficult for me.

quik95lt1

iTrader: (7)

yep im just running a regular old bolt in mine with no issues........long as they are tight they shouldn't back out......