Quote:
Originally Posted by lindstromjd
You can get a stud kit to really help strengthen them up. I think ARP sells a kit for the main girdle on a 6.2...
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Both of those items are band-aids and not fixes to a weak bottom end design. They may work but I still would not trust it to hold long term on a high performance turbo 6.2L. Remember, the original red 1982 6.2 block which also is one of the strongest out there due to the high nickel content was only rated for 130 hp / 240 ft-lbs torque. It did not make much power but it got very good fuel economy and they lasted forever if maintained. Over the years, power increased and fuel economy and longevity nose dived. I've got a 1982 6.2L Suburban with nearly 500k miles on the original engine and if driven conservatively, it'll manage 30 mpg. Stock form, it was extremely slow so I installed headers and a free flow exhaust. The difference was like night and day and I gained a little on fuel economy as well. It has plenty of performance to maintain all the speeds on the highway including the 80 mph speed limits in Texas. I also tow a 26' Airstream behind it. It doesn't keep up with the big boys but it does get the job done.