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#1
07-04-2020, 07:45 PM
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97 Tahoe with spun rod, what to do?
My friend has a nice rust free 97 Tahoe that I found him couple years ago for $3,200. Truck now has 114k miles and is used to run from Denver up to the mountains for ski/fishing trips. Has been well maintained. Upon return from the mountains yesterday the truck has a rod knock. I'm thinking it was probably over-revved. It was full of oil (just changed it not long ago). It still has good oil pressure but certainly has a rod knock. I was pretty shocked considering the mileage...
Options are: Sell truck for next to nothing Rebuild existing engine Find a crate/reman engine Install Pontiac 455  What is the best option for replacement and a ballpark for cost? If we are going to put the $ into another motor I'd like to get something with more power. The stock 5.7 is a PIG. I see there are reman motors out there in the $2k range but those are not getting me too excited..
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************************************* 1968 Lemans. 37,000 original miles. GTO clone. 462ci/KRE 290 heads. UltraDyne 280/288 Solid/850 Qjet by Cliff/Performer RPM/TSP 9.5" in TH400/8.5" 3.42 gears/3950# Race weight/12.58@106 at Bandimere speedway high altitude |
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#2
07-04-2020, 08:29 PM
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Verify it’s not the flywheel. I have replaced a few cracked ones in mid 90s Chevy trucks. Not sure if a common issue but sounds similar to a rod knocking.
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#3
07-04-2020, 08:31 PM
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Quote:
Sent from my SM-G973U using Tapatalk
__________________
************************************* 1968 Lemans. 37,000 original miles. GTO clone. 462ci/KRE 290 heads. UltraDyne 280/288 Solid/850 Qjet by Cliff/Performer RPM/TSP 9.5" in TH400/8.5" 3.42 gears/3950# Race weight/12.58@106 at Bandimere speedway high altitude |
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#4
07-04-2020, 09:01 PM
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Hard to tell from your video but if you YouTube cracked flexplates you will notice it has a similar tap as well more rapid similar to yours.
Good luck. |
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#5
07-04-2020, 09:35 PM
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Quote:
Sent from my SM-G973U using Tapatalk
__________________
************************************* 1968 Lemans. 37,000 original miles. GTO clone. 462ci/KRE 290 heads. UltraDyne 280/288 Solid/850 Qjet by Cliff/Performer RPM/TSP 9.5" in TH400/8.5" 3.42 gears/3950# Race weight/12.58@106 at Bandimere speedway high altitude |
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#6
07-09-2020, 09:45 PM
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What about rebuilding the engine using a stroker crank and a little more cam?
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#7
07-09-2020, 10:14 PM
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Repair the existing engine, not rebuild.
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#8
07-10-2020, 04:51 PM
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Withdrawn please remove
Sent from my SM-G973U using Tapatalk
__________________
************************************* 1968 Lemans. 37,000 original miles. GTO clone. 462ci/KRE 290 heads. UltraDyne 280/288 Solid/850 Qjet by Cliff/Performer RPM/TSP 9.5" in TH400/8.5" 3.42 gears/3950# Race weight/12.58@106 at Bandimere speedway high altitude |
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