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Old 11-10-2011, 07:34 PM
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Need help with suffix codes

This may be a stupid question, but i can't find out any info on my engines suffix codes. I've tried to just google and yahoo the numbers with no luck. And tried to find a site to help find more about my engine with no luck either.. It is a 400ci sbc , casting number is 3951511, and I found out the basics with this but wan to know more, the suffix numbers/codes on the front of the block are T0414CKP and another set is,12S251618.. thanks for any help in advance!!

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Old 11-11-2011, 06:11 AM
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Has a 4 bolt main
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Old 11-11-2011, 06:21 AM
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LOL thanks I got that from pulling the oil pan! I have found info on the casting numbers just not on the suffix numbers. The info i found on the suffix came back it was an alum. headed 396! NOT! lol thanks for the reply though
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Old 11-11-2011, 06:50 AM
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Uh looks to be around 72 with 170hp it'll have plenty of torque, but if you're planning on doing anything with this engine these will really mean nothing.
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Old 11-11-2011, 12:09 PM
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Thanks alot project69,do you know how much torque?
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Old 11-11-2011, 03:24 PM
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Quote:
Originally Posted by gmc1990rodder
...the suffix numbers/codes on the front of the block are T0414CKP...
CKP - '72 400cid, Impala, 170 HP, RPO LF-6, TH400 w/2-Brl carb.

Maybe someone knows the factory torque rating for it- I have Chevrolet manuals but they're either newer or older than '72. The factory ratings started taking a hit in '71 w/the lower CR, etc. required by the fedgov, and how the power ratings were figured changed from gross to net- which made the '72-up engines look 'weaker'.

Bottom line is it really doesn't matter what it HAD, it can make 400-plus ft/lbs w/relative ease.
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Old 11-11-2011, 03:42 PM
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Thanks allot cobalt! This atleast gives me some sort of direction!!
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Old 11-11-2011, 04:20 PM
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Cobalt's right about getting the 400 pluse torque, and IIRC that engine should be in the 305 -325 ft/lbs from the factory anyway.



Cole
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Old 11-11-2011, 06:47 PM
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Thanks alot cole! Maybe I can get the money for a rebuild soon!
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