Re: LS Swap: Introduction, newbie, planning...
Does the engine have 706 heads? If so, could be a set of Castech heads that were known for cracking.
Also, the '98 coolant temp sensor may move the gauge in a '72, but won't be accurate. Tried that 20 years ago on my '71 Nova, which I'm sure uses the same internal gauge parts and it didn't work.
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