3rd gen k-member and lsx mounts
10-09-2014, 09:45 PM
#1
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Car: 1988 Pontiac Transam GTA Notchback
Engine: 2003 Chevy 5.3 Vortec (325 cu)
Transmission: 4L60E
Axle/Gears: 3.27
3rd gen k-member and lsx mounts
Hi, I have a question (obviously - lol)
I have a stock notched k-member and spohn adapter plates. I know how it is positioned on the k-member, but I want to know what bolts everyone is using. Meaning are there stock bolts, or is there something else, grade would help. Since it is a bolt and nut, what torque specs is everyone using? Also, when I get my engine, what torque specs should I use to tighten the mount to the block. Is there anyone that sells a complete bolt kit for the engines? The latter I have not looked into much, but I nevertheless would like a little advise.
Thanks guys.
ps: swap is near... my charcoal canister failed today and I took it on the highway at high speed, felt like the transmission was going to shake loose and come through the floor. I can't wait for the swap!
I have a stock notched k-member and spohn adapter plates. I know how it is positioned on the k-member, but I want to know what bolts everyone is using. Meaning are there stock bolts, or is there something else, grade would help. Since it is a bolt and nut, what torque specs is everyone using? Also, when I get my engine, what torque specs should I use to tighten the mount to the block. Is there anyone that sells a complete bolt kit for the engines? The latter I have not looked into much, but I nevertheless would like a little advise.
Thanks guys.
ps: swap is near... my charcoal canister failed today and I took it on the highway at high speed, felt like the transmission was going to shake loose and come through the floor. I can't wait for the swap!
10-09-2014, 10:11 PM
#2
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Car: 92 Firebird
Engine: Supercharged 6.0
Transmission: T56
Axle/Gears: 8.8 3.73
Re: 3rd gen k-member and lsx mounts
Mount bolts arent critical, use whatever is available, originals work fine. Torque values arent critical either, google the industry standard for whatever size/grade bolt you use if worried about it
I use grade 5 3/8" bolts with lock washers torqued as tight as my stubby spark plug ratchet can get them (30ish lb/ft)
I use grade 5 3/8" bolts with lock washers torqued as tight as my stubby spark plug ratchet can get them (30ish lb/ft)
10-09-2014, 10:18 PM
#3
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Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: 3rd gen k-member and lsx mounts
All the bolts are M10x1.5 so you can use the same 37 lb-ft torque for everything.
The large thru-bolt in the engine mount is 70 lb-ft.
Reuse the K-member bolts. You might need to get another set to make it four per side.
The large thru-bolt in the engine mount is 70 lb-ft.
Reuse the K-member bolts. You might need to get another set to make it four per side.
10-09-2014, 10:19 PM
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Car: 1988 Pontiac Transam GTA Notchback
Engine: 2003 Chevy 5.3 Vortec (325 cu)
Transmission: 4L60E
Axle/Gears: 3.27
Re: 3rd gen k-member and lsx mounts
well that's a start, thx Pocket .
10-09-2014, 10:23 PM
#5
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Car: 1988 Pontiac Transam GTA Notchback
Engine: 2003 Chevy 5.3 Vortec (325 cu)
Transmission: 4L60E
Axle/Gears: 3.27
Re: 3rd gen k-member and lsx mounts
thanks that's even better
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