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Ring sizes on stock l98 5.7 block?

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Old May 8, 2006 | 01:47 PM
  #1  
vortech35091RS's Avatar
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From: Yuma, Arizona
Car: 1991 camaro RS
Engine: 350,vortech heads,zz4 cam,3:73 posi trac,edelbrock carb,wiend stealth intake,raven mufflers,hooker supercomp shorty headers and y-pipe.
Transmission: th700r4
Ring sizes on stock l98 5.7 block?

I'm in a bit of trouble I just bought a re-ring kit. I kept the cylinderwalls and everything stock, I didn't bore or any of that. And the rings I ordered (I ordered Standard size) and the rings went in fine, EXECPT the LOWER COMPRESSION ring. So I'm going to call the company that I bought them off of and re-order the rings I will need, only I don't know what the size on the lower compression ring is? Would any of you happen to know the size on the stock L98 piston? Thanks
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Old May 8, 2006 | 05:20 PM
  #2  
Rob Wade's Avatar
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From: Windsor Ontario Canada
Car: 89 jaguar xjs convertable
Engine: 89 L98 5.7 TPI
Transmission: 700R4
Axle/Gears: 3.23 dana 44
4.0 is a standard 350 bore size
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Old May 8, 2006 | 05:58 PM
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Sonix's Avatar
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From: Calgary, AB, Canada
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
have you ever put on rings before? just curious, 'cuz the lower ring is huge and sloppy compared to the rest, has a bigger gap, and is a PITA to put in. (unless you know "the" technique.)
Seems strange that the tops rings in the box are right, and the oil ring isn't....
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Old May 8, 2006 | 07:01 PM
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Apeiron's Avatar
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Both compression rings are 5/64" thick. The oil ring groove is 3/16".
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Old May 9, 2006 | 01:28 PM
  #5  
vortech35091RS's Avatar
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Posts: 272
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From: Yuma, Arizona
Car: 1991 camaro RS
Engine: 350,vortech heads,zz4 cam,3:73 posi trac,edelbrock carb,wiend stealth intake,raven mufflers,hooker supercomp shorty headers and y-pipe.
Transmission: th700r4
Originally Posted by Apeiron
Both compression rings are 5/64" thick. The oil ring groove is 3/16".

Thank you so much, now I can re-order the new ones.
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Old May 9, 2006 | 07:55 PM
  #6  
Apeiron's Avatar
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
I like Sealed Power E251K. Pre-gapped, moly-faced top ring, available in overbored sizes.
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