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Post by ninepoundhammer on Sept 12, 2017 21:12:05 GMT -6
How's she goin guys and gals. i'm in the midst of tearing down and rebuilding my 350. I've found a few different issues while tearing it apart, and just want to make sure i'm not nuts for thinking it's harmless. it's an 89' block out of a 3/4 ton, the block casting number is LG GSI - 14093638. while i was tearing it down, i realized the thing had 2 different heads on it. drivers side was a 14102191, or in other words, a junk swirl port head with 76cc chambers. passenger side was a 14102193, which I've always known as a 305 head. 64cc chambers. would these two different heads fuck up the motor bad, since it'd be two different compression ratios? as well, once i tore the heads off, i discovered it was rebuilt and bored out .040. there's no sign of anything wrong in the bottom end or on the cylinders, and it's getting new heads anyways, but is there anything i should look for before putting new heads on, that might signify a full rebuild is in line? the motor seemed to run fine, you'd never know there were 2 different heads on it. I've never seen this before, any help would be great.
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Post by Dcving on Sept 13, 2017 15:12:43 GMT -6
How's she goin guys and gals. i'm in the midst of tearing down and rebuilding my 350. I've found a few different issues while tearing it apart, and just want to make sure i'm not nuts for thinking it's harmless. it's an 89' block out of a 3/4 ton, the block casting number is LG GSI - 14093638. while i was tearing it down, i realized the thing had 2 different heads on it. drivers side was a 14102191, or in other words, a junk swirl port head with 76cc chambers. passenger side was a 14102193, which I've always known as a 305 head. 64cc chambers. would these two different heads fuck up the motor bad, since it'd be two different compression ratios? as well, once i tore the heads off, i discovered it was rebuilt and bored out .040. there's no sign of anything wrong in the bottom end or on the cylinders, and it's getting new heads anyways, but is there anything i should look for before putting new heads on, that might signify a full rebuild is in line? the motor seemed to run fine, you'd never know there were 2 different heads on it. I've never seen this before, any help would be great. check the rods for play in the bearings and pull a main cap off or two to see how the crank journals and bearings look and for the different heads fucking the motor up, nah not really you can run a SBC with a head missing and it wont even care |
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Post by LMB on Sept 16, 2017 21:58:25 GMT -6
and for the different heads fucking the motor up, nah not really you can run a SBC with a head missing and it wont even care This. A SBC will run on bubblegum and duct tape, iirc the TBI 350's like that are the swirl port from the factory though. |
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Post by Dcving on Sept 17, 2017 14:05:03 GMT -6
yep the "vortec" or 2nd gen SBC is what it means the ports are swirled on em
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, This place has a lot of memories for sure.
