Hey guys,
I have been daily driving a 11 LML that I bought from original owner with over 600,000 miles on it, I am at 705,000 miles now. At 675 or so it needed head gaskets, so I did ARP studs, grade Cs, hsp piping kit couple other small upgrades and CP3 swapped (had original CP4 in it ). Anywho fast forward a bit and it hits 704,500 and breaks the crank at the back. Iām not complaining it lasted 700+ and Iād just added a pile more cylinder pressure too it etc. So found a āgood usedā 150,000 mile motor to swap. Ended up that one had one bad piston (cracked) so we swapped in one of the others and put it in. It went about 500 miles on this motor and this cranks now also brokenā¦ā¦..
Iām looking for a couple answers and I know Iāll get them here.
1 - Can I use a LB7 short block (I have a couple and they arenāt drug money like a LML) and swap the LML heads etc onto it.
2 - Is it just poor luck that the spare motor broke the crank also? Or is there anything specific truck side that anyone can think of that would cause the issues with cranksā¦
Thanks as always,
Rob
I have been daily driving a 11 LML that I bought from original owner with over 600,000 miles on it, I am at 705,000 miles now. At 675 or so it needed head gaskets, so I did ARP studs, grade Cs, hsp piping kit couple other small upgrades and CP3 swapped (had original CP4 in it ). Anywho fast forward a bit and it hits 704,500 and breaks the crank at the back. Iām not complaining it lasted 700+ and Iād just added a pile more cylinder pressure too it etc. So found a āgood usedā 150,000 mile motor to swap. Ended up that one had one bad piston (cracked) so we swapped in one of the others and put it in. It went about 500 miles on this motor and this cranks now also brokenā¦ā¦..
Iām looking for a couple answers and I know Iāll get them here.
1 - Can I use a LB7 short block (I have a couple and they arenāt drug money like a LML) and swap the LML heads etc onto it.
2 - Is it just poor luck that the spare motor broke the crank also? Or is there anything specific truck side that anyone can think of that would cause the issues with cranksā¦
Thanks as always,
Rob