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Old 02-15-2021, 02:42 PM
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Default 1970 LT1 #186 heads

1970 LT1 Heads. Removed from a running 1970 LT1 corvette. Owner was going to have rebuilt but decided to go with aftermarket heads and did not want to keep these. He had them magnafluxed and checked out. Looks like they never had any seat work or other done. Magnaflux called out two small cracks in seats marked and indicated in pics. Dates shown indicate early 1970. $200 OBO plus ride. Mark
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Old 02-15-2021, 11:15 PM
Spike Spike is offline
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Default 186 Heads

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Old 02-16-2021, 05:03 PM
wayoutz wayoutz is offline
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I thought all LT1 motors had the push rod guide plates?
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Old 02-16-2021, 05:15 PM
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Quote:
Originally Posted by wayoutz View Post
I thought all LT1 motors had the push rod guide plates?
Not sure. All i can confirm is that these heads came off a stock LT1 1970 Corvette. Neighbor owns the car and still has original block that came in the car that had these heads on it.
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Old 02-16-2021, 05:45 PM
wayoutz wayoutz is offline
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Quote:
Originally Posted by BlackL78M22Nova View Post
Not sure. All i can confirm is that these heads came off a stock LT1 1970 Corvette. Neighbor owns the car and still has original block that came in the car that had these heads on it.
I have a buddy of mine just found a pair the same with press in studs, 186 202 valves dated 4-26-0. maybe someone else here on the forum can tell us.
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1969 Z28 GLACIER BLUE ON BLUE X33 RS
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1966 CORVETTE 327/350 L79 BLOOMINGTON GOLD
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Old 02-16-2021, 07:37 PM
Hotrodpaul Hotrodpaul is offline
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Was the L-46 350Hp 350 available in 1970? If so it could have used the heads without guideplates.
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Old 02-20-2021, 05:00 AM
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1970 LT-1 186 heads came with 2.02 / 1.60 valves, screw-in studs and push rod guide plates from the factory.
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Old 02-20-2021, 02:24 PM
Hotrodpaul Hotrodpaul is offline
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The L-46 was available in 1970 and using the hydraulic cam, came with pressed in studs. These heads came off an L-46 1970 Corvette.
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