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Thread: TQ converter bolt help....
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08-05-2013, 07:23 AM #1Senior Member
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Black/ Silver- 98 TA WS6/ 01 C5 Corvette
TQ converter bolt help....
So I got under my car to remove the tq converter bolts via the flywheel and I was under the impression that they were hex style bolts. However these are allen key bolts and I was wondering if anyone has come across this and what their size is.
1998 Trans Am WS6 - Phantom
421 CI LQ9, Tick Performance Custom Cam, TFS 255cc LS3 heads, Kooks 2" LT headers, Kooks 3" True Duals w/ high flow cats, FTP 104 lid, Speed Density Tune, 4" silicon tube, LS6 VCT, FAST 102 Intake, NW 102 TB, Oil Catch Can, SLP Bilstein Shocks w/ Vogtland Springs, CTS-V 4-piston Calipers w/C6 Z06 rotors, Stainless Steel Brake Lines, R1 concepts premium rotors, Hawk HP+ brake pads, VFN WSQ Hood, C5-R timing chain, SLP oil pump, E85 tune, Walbro 450 fuel pump, Deatschwerkz 95# injectors, Breathless performance headlights, Frost Tune, !HVAC.
(Coming Soon) BMR DSL, UMI TQ Arm
421 LQ9 14.8:1 on E85 Build/
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08-23-2013, 08:06 AM #2Senior Member
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Black/ Silver- 98 TA WS6/ 01 C5 Corvette
Anyone?
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08-23-2013, 10:28 AM #3Veteran
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98 Formula- 06 duramax
been a long time since I've done converter bolts.....pretty sure it's an 8mm metric allen wrench. I know the 98's got the allen bolts and the others got regular bolts.
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08-23-2013, 10:35 AM #4Spaz is My Mentor
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Navy Blue Metallic- 98 T/A w/ mods, 00 FBVert
why would they use allen head bolts?
my other question is, can you swap them out?
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08-23-2013, 11:09 AM #5Senior Member
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Black/ Silver- 98 TA WS6/ 01 C5 Corvette
Alright thanks!
Originally Posted by 0rion
Probably the same reason on my 85 corvette the fender was held on by an extremely odd torx bolt size. I am pretty sure you can and that ARP sells replacement hex headed bolts. Originally Posted by SMWS6TA
Last edited by 98TransAmWs-6; 08-23-2013 at 11:11 AM.
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08-23-2013, 11:28 AM #6Veteran
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98 Formula- 06 duramax
not sure...GM has had a love affair with allen bolts and torx bolts for years. I've done countless brake jobs where the caliper was mounted with allen bolts. What a shitty bolt to use in that application too. The last one I did was on my neighbors 1500 series truck. Of course the allen rounds out so I had to break out the welder and tack beads around the bolt head until I could get a pipe wrench with a piece of pipe on it to break it loose. GM got called many many unthinkable words that afternoon. Originally Posted by SMWS6TA
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08-24-2013, 04:56 PM #7Veteran
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Black & Blue- '02 WS.6 / '07 Suburban
Had regular bolts in our '02 -- wasn't aware of the '98s being different. I used ARP's when I installed the new trans and torque converter. Cheap insurance.
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08-24-2013, 05:21 PM #8Senior Member
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Black/Black- 98 WS6/04 Sierra Dmax
I'm pretty sure my 98 had regular bolts, but i might be wrong that was 6 years ago I took them out. ARP bolts in mine to.
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08-25-2013, 05:15 PM #9Senior Member
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Black/ Silver- 98 TA WS6/ 01 C5 Corvette
Well it had its Transmission replaced with a new GM unit in 2008, so maybe the newer one used allen key bolts? Originally Posted by cpop98ws6
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09-10-2013, 06:54 AM #10Senior Member
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Black/ Silver- 98 TA WS6/ 01 C5 Corvette
Update....the 8mm allen key socket fits. I just need to get the long enough extention since my 10" isn't long enough.
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