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Author Topic: 73 Dodge Charger 400 big block dyno  (Read 655 times)
BSB67
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« Reply #25 on: November 21, 2021, 10:00:36 AM »

I do think it is step one.
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500" NA, Eddy head, pump gas, exhaust manifold with 2 1/2 exhaust with tailpipes
4150 lbs with driver, 3.23 gear, stock converter
11.68 @ 120.2 mph
Michaelgt450
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« Reply #26 on: November 23, 2021, 01:32:11 PM »

So I checked the compression on one cylinder it came out to be 145.... tested cylinder number 2 came out around 155 the car was cold didn't know if I needed a warm it up or not
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metallicareload99
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« Reply #27 on: November 24, 2021, 02:35:42 AM »

So I checked the compression on one cylinder it came out to be 145.... tested cylinder number 2 came out around 155 the car was cold didn't know if I needed a warm it up or not

Nice car! I've heard the "right way" to do a compression test is plugs out, throttle open, battery charged, engine to operating temp. I always do all the above, but usually the engine is cold.
145 to 155 seems ok, but I think you really need to test all 8, in the same conditions and go from there
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1968, When Dinosaurs Ruled The Earth
Michaelgt450
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« Reply #28 on: November 24, 2021, 11:05:06 AM »

So I checked the compression on one cylinder it came out to be 145.... tested cylinder number 2 came out around 155 the car was cold didn't know if I needed a warm it up or not

I didn't do the Full Throttle open with that give a different reading I'll check them all

Nice car! I've heard the "right way" to do a compression test is plugs out, throttle open, battery charged, engine to operating temp. I always do all the above, but usually the engine is cold.
145 to 155 seems ok, but I think you really need to test all 8, in the same conditions and go from there
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