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SC Nebraska | My 86’ Chevy C70 boomtruck has 366 that is getting awful weak. Runs on 6-8 cylinders depending on its mood.
While back I bought a 75’ model C 65 for a parts/project truck. Have no history on the engine (another 366) but son and I threw battery and fresh gas at it today, and it sounds decent.
Ran a compression check. Every cylinder hit 90psi on first stroke, then on up to 140psi on the next three strokes. Not sure how to read that?
I’m torn. Don’t really want to put another 366 in the truck, and don’t really want to swap engines for recreation. Had “planned” to get second engine freshened up, then swap, but now I’m tempted to skip the freshening.
Truck might do 250-500 miles a year, but gets lots of idle time running the crane. Don’t need much power, a clean smooth idle is my absolute priority.
In a perfect world a 6.0 fuel injected would fall into it, but not sure I’m up to it.
Thoughts?
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Attachments
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 B384C213-17AB-4CA4-9150-2493B0DA59F1 (full).jpeg (117KB - 87 downloads)
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- Compression test?? Rebuild, punt, fold….. - SVS : 6/7/2022 20:30
- RE: Compression test?? Rebuild, punt, fold….. - ccjersey : 6/7/2022 21:12
- RE: Compression test?? Rebuild, punt, fold….. - Brahamfiremen : 6/7/2022 21:16
- RE: Compression test?? Rebuild, punt, fold….. - PatCMO : 6/7/2022 21:25
- That’s encouraging - SVS : 6/7/2022 22:10
- RE: Compression test?? Rebuild, punt, fold….. - Dmzseia : 6/7/2022 22:24
- RE: Compression test?? Rebuild, punt, fold….. - School Of Hard Knock : 6/7/2022 23:46
- RE: Compression test?? Rebuild, punt, fold….. - D6Joe : 6/8/2022 05:12
- RE: Compression test?? Rebuild, punt, fold….. - coastalBend : 6/8/2022 05:32
- RE: Compression test?? Rebuild, punt, fold….. - seedcleaner : 6/8/2022 07:41
- Sea foam applied, mosquitoes died… - SVS : 6/8/2022 10:57
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Compression test?? Rebuild, punt, fold…..
