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  #1  
Old 06-23-2016, 07:39 AM
1979birds 1979birds is offline
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Default 61/63 tempest 4cly engine

Looking for a 4cly engine for my 62 lemans.

  #2  
Old 06-23-2016, 09:44 AM
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check with 63banshee on this site.

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Old 06-23-2016, 10:27 AM
marxjunk marxjunk is offline
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i see them often on craigslist..you just have to be diligent...use something like searchtempest.com

you can do a search for X amount of miles from your location..or coast to coast

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Old 06-23-2016, 12:01 PM
trynsave trynsave is offline
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61 62 4 cyl engines are slightly different from 63

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Old 06-23-2016, 12:49 PM
1979birds 1979birds is offline
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Thanks what are the differences.

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Old 06-23-2016, 01:00 PM
trynsave trynsave is offline
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front cover..cam among other things ..maybe inside of block-but you can still bolt a 63 into a 62 and vice versa

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Old 06-23-2016, 06:57 PM
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I have a 62 if you're interested. PM me if interested.

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Old 06-25-2016, 11:01 PM
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GaryK GaryK is offline
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Quote:
Originally Posted by 1979birds View Post
Thanks what are the differences.
61 and 62 have a thicker wall blocks where 63 are thinner. If you are not going to build a race motor out of it, it really doesn't matter.

61-2 used a flat top pistion in the 10.25:1 4 cylinders and dished in the 8.6:1 motors, 63 all were flat tops and the difference in compression ratio was with the head.

61 had a different 4bbl intake than the 62-3's.

63 has the alternator bracket.

I put a 63 motor in a 62 Tempest, everything will bolt up.

Gary

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Old 06-26-2016, 06:59 AM
trynsave trynsave is offline
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62 and 63 camshafts are not interchangable

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Old 07-02-2016, 09:36 AM
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Quote:
Originally Posted by trynsave View Post
62 and 63 camshafts are not interchangable
What are the differences? I never heard this before.

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Old 07-02-2016, 01:09 PM
trynsave trynsave is offline
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its been 30 years since I built one..so my memory isn't real clear-but I think the rear cam journal is larger

  #12  
Old 07-03-2016, 09:55 AM
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c5farmer c5farmer is offline
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Default T4 camshafts

The Pontiac parts manual list the camshaft number for 61-63 T/4 engines with the same cams...pn 539099 (J) for dual valve springs and pn 537995 (H) for single valve springs. They are interchangeable. Same cams were used in all 3 years.

  #13  
Old 07-03-2016, 10:34 AM
trynsave trynsave is offline
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ok-like I said.... 30 years ago-I just remember the something wasn't the same inside the block

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Old 07-04-2016, 10:56 PM
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Default Agree

Trynsave, I forget stuff a lot quicker than 30 years ago ! You may have been thinking about the way Pontiac controlled the compression ratio in the 4cylinders. 61-62 it was controlled by the piston domes and 63 by cylinder head combustion chamber size.
About the only differences I know of.

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Old 07-04-2016, 11:04 PM
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65nss4spdGTO 65nss4spdGTO is offline
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I have a couple of engines, also a nice build in the process.

Call me if you want to discuss.

Calvin Hill
Hill Performance
708-250-7420

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