View Full Version : Help decode this engine stamp is this a LS6
vette1969
01-19-2006, 05:15 AM
i believe it says to313crr
1970 Chevelle LS-6 454/450Hp engine code w/TH400 trans. assembled at Tonawanda assembly plant on March 13th,1970.
vette1969
01-19-2006, 06:00 AM
THANKS VERY MUCH!!!I thought it was just wanted to make sure before i bought it
Rainer
01-19-2006, 07:59 AM
Assuming you're the high bidder, right? Lots of boat buyers out there http://www.yenko.net/ubbthreads/images/graemlins/wink.gif
The seller indicated that he would accept a "buy it now" offer, so you'd better hurry. You should find out the casting date of the block, because I have seen the "CRR" stamping on '71 and '72 blocks in addition to '70.
vette1969
01-19-2006, 06:35 PM
i got it! casting date works!
tirebird
01-21-2006, 07:38 PM
COPO's correct. Here's the stamping on my LS6, a warranty replacement engine sold by Berger in 72.
"TO417CRR, C 27 72, casting #:3999289 GM 9 T"
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