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Discussion Starter #2
Unless someone changed the engine, a GT of that vintage will have a 1.9 litre engine as standard.
 
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Discussion Starter #3 (Edited by Moderator)
Look directly below the second sparkplug from the front. Most likely you'll see "19S"; followed by six or seven digits, stamped there on the block. "19" indicates the 1.9 litre cam-in-head engine we all know around here, the "S" indicates the use of premium fuel. IF this is the original engine, that is. Chances are that it is.
 
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Discussion Starter #4
How can I identify which engines I have??

I have 2 engines in my garage..a grimey 1.9 w/4spd from an Ascona or Manta or something and a clean 1.9 from an automatic GT. i want to start saving goodies to build a mean 9.0 compression or higher, ported head engine for my car. i want to get rid of these engines, but need to find out 1st if they are early or late, high or low compression, solid or hydraulic lifters... is there a way to read the casting #s on them too see? one has weird circles the sizes of nickels and dimes on the right side of the block and the other doesn't. what should i look for??? :confused:
 

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I have 2 engine blocks and it seems that the year is
stamped on the block. From what I have read the 69
are the high comp. motors and the 70's are the low comp.
motors. I quess the only way to be sure is to pop off the
head and look at the top of the pistons.

Good Luck,
Stanley P
 

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Engines for the US market before 1971 (and a few 1971 vehicles) were solid lifter, high compression engines. All Manta/Ascona engines were SUPPOSED to be low compression engines, but a few have slipped by otherwise (rare). So basically all 1971-1975 US-spec engines are lower compression engines with hydraulic cams. Stay away from late 1972-1975 heads, they are prone to crack. Also, some 1974 and all 1975 blocks used cast connecting rods instead of forged rods like the earlier engines, so these should be avoided for performance use.

Bob
 
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