Decode for and Imapla 396 L34,L35,L36????? - Impala Tech
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post #1 of 3 (permalink) Old 01-01-2009, 11:34 PM Thread Starter
 
 
Join Date: Jan 2009
Location: Spring,TX
Posts: 17
 
Decode for and Imapla 396 L34,L35,L36?????

I bought a 69 chevelle with a 396 eninge but I need help decoding since what I have decoded so far it is from a Impala. Here is the info:

front of the block Passinger side: #T0428IVR
Intake Manifold: #3883948
Water Pump: #6263707 A25073
Heads: #336781
date code above the time dial on the block behind the carb and intake casting number: # L87

If anyone could brake this down for me I would really be thankful.
How much horsepower do you think its pumping just going by the numbers?
Is it a L34,L-35,L-36,L-37 etc?.............
shonuff is offline  
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post #2 of 3 (permalink) Old 01-02-2009, 01:36 AM Thread Starter
 
 
Join Date: Jan 2009
Location: Spring,TX
Posts: 17
 
Quote:
Originally Posted by shonuff View Post
I bought a 69 chevelle with a 396 eninge but I need help decoding since what I have decoded so far it is from a Impala. Here is the info:

front of the block Passinger side: #T0428IVR
Intake Manifold: #3883948
Water Pump: #6263707 A25073
Heads: #336781
date code above the time dial on the block behind the carb and intake casting number: # L87

If anyone could brake this down for me I would really be thankful.
How much horsepower do you think its pumping just going by the numbers?
Is it a L34,L-35,L-36,L-37 etc?.............
Engine Block casting# 3855961
shonuff is offline  
post #3 of 3 (permalink) Old 01-02-2009, 04:49 AM
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Join Date: Jan 2006
Posts: 12,458
 
See my reply in your other post. You do not have a pure bred, but a mongrel of other parts from different years. It started life as a 325 horse 396 out of an Impala/Biscayne with a Rochester QuadraJet.

Hopefully it was rebuilt by someone who knows what they were doing as the early 396 blocks were unique (Chevrolet was going to release this engine as a 409 displacement so the cylinder walls are extremely thick to accept a 409 bore). The four bolt variant of this year block was much sought after for that reason as racers used to hog them out to a 427 bore. This being a two bolt main block probably spared it.

This block was probably spared as well because it does have a problem with a cam swap unless the cam bearings are replaced with new ones from a 427.

Big Dave
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