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oilstainedjeans
Tribal Scout
USA
1 Posts |
 Posted - 21 Dec 2017 : 3:49:44 PM
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| I am new to Pontiac engines ,, I have what I was told is a 389 from a 1970 GTO but checking the numbers it appears to be a 1970 400 ,, the block casting on the rear passenger side reads 9799916 ,, the stamped numbers on the front passenger side are 20P272540 ,, YU ,, any assistance would be greatly appreciated |
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Bill Boyle
Horse Feathers (Charter Member)
USA
4993 Posts |
Posted - 21 Dec 2017 : 4:10:06 PM
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| Indications point to a 350 Pontiac, not a 389 or 400. 99916 indicates '70 block, YU shows it to be a 2 barrel version per Pete McCarthy's book. |
"Dedicated to keeping the classic Pontiac engine alive."
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400 bored +.030, forged TRW pistons, ported 62 heads, Hedman headers, 2.5 SS dual exhaust X Pypes, Comp 276AH10 cam, Scorpion 1.65 RR, 850 Q-jet, stock intake & tuned HEI; original owner. |
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engine id
