are the stock head bolts on an ls1 torque to yield? the gm bolts on summit say torque to yield. regardless i need to buy new head bolts, i was just wondering if anyone else would be able to use them
Just curious - you say ARP. Can you still pull the heads on a motor that has APR studs installed while the motor is still in the car? Is there enough room to clear the studs?
__________________ 2000 TA, fresh rebuild w/ 230/230 600/600 113lsa, weiand LS6 intake, 243 heads, LT & ORY, TransGo Stage 3, Yank 3600SS, 3:42 out back and a 125 shot for good luck .
Just curious - you say ARP. Can you still pull the heads on a motor that has APR studs installed while the motor is still in the car? Is there enough room to clear the studs?
I have ARP studs and I have removed and reinstalled the heads with the moter in the car.
I reused head bolts on my 6.0, I didnt see a real big problem with it but I would recommend replacing them
__________________ http://i271.photobucket.com/albums/j...uck/720092.jpg
LQ4//Lunati//241's//80e//LT's//Tuned? R.I.P.
Your heart will live on...
'68 C-10 RCSB-350/4L60e/LTs/Slow-SOLD
'04 Gix 6-Passion not fashion
'99 T/A T-56//LS1//Fun
Yep, as stated they are in fact TTY bolts. Some people have re-used them but it's not suggested. You also have 2 options with ARP, studs or bolts. If you dont wanna mess with the studs, just buy the bolts. But yes, heads can be removed with studs installed.
__________________
1999 Trans Am Ws6 6-speed--12.9 @ 108.7 w/2.1 60' (street tires)(before H/C/I no new times yet) MODS: MTI Lid--Hooker Muffler--Pacesetter 1 3/4" race LT's--TSP 3" ORY--LS7 clutch kit--LS2 flywheel--224/.581 114--5.3 Bo White heads port/polished & milled .018"--Bo White port/polished TB--Patriot Gold dual spring kit--7.4 TR chromemoly pushrods
__________________ http://i271.photobucket.com/albums/j...uck/720092.jpg
LQ4//Lunati//241's//80e//LT's//Tuned? R.I.P.
Your heart will live on...
'68 C-10 RCSB-350/4L60e/LTs/Slow-SOLD
'04 Gix 6-Passion not fashion
'99 T/A T-56//LS1//Fun
That is a VERY VERY bad idea. You may snap a bolt the next time you go to take the heads off. You also dont have the right torque on you heads currently because of the bolt stretch.
__________________ 98 TransAm WS9 Raim Air – MRK-Motorsports Stage 4 4L60E Trans -3:90 Rear -1.8 HS Rockers - UMI Suspension – QA1 Rear Shocks - 85MM Lid – 85MM Z06 MAF - FAST 92MM Intake - 224/230 Comp Cam - 7.350 Push Rods - 243 TEA Stage 2 LS6 Heads 61cc - Melling 10296 Pump - Caddy Lifters - SLP Underdrive Pulley - 160 Thermo - 42# Green Top - HPT - SLP Line lock - Pacesetter LTube Headers - Yank SS4000 - Lingenfelter 2 Step -MRK-Motorsports LS1 Engine - NEW 1/4 TIME TO COME
DON'T reuse your factory headbolts like bigboykilroy said. At the very less, purchase a new factory head bolt kit (one kit per head) from your GM dealer or summit racing. They run about $25 per set. part number GM - 12498545.
__________________ 2000 TA, fresh rebuild w/ 230/230 600/600 113lsa, weiand LS6 intake, 243 heads, LT & ORY, TransGo Stage 3, Yank 3600SS, 3:42 out back and a 125 shot for good luck .
torque to yield head bolts? 
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