1st. off if a Buick engine the distributor will be in the front. To tell if it's a big block or small block all you have to do is look at the valve covers. 5 bolts holding them down is a 455. 6 bolts holding them down is a 350.
Tom T.
Hi,
Im new in the world of Forums so excuse me if im in the wrong place tith this post, also im not from america so my english provably is not the best i hope you understand me anyways
recently i bought a 1971 Buick Riviera in horrible conditions and im confused about the engine it came with.. it looks kind of small for a bigblock haha
here i have the numbers i found on the engine maby some of you would be so kind and help me with the identification of the block
the numbers are kind of hard to read but this is what it looks to me:
i found 3 numbers at diferent places
1: XD
2: 28A188465
3: (the hard one to read i dont know if the two ``O´´ are part of the code because they are more like big dots, the ?? mean im not sure if there are more digits or letters looks like it could be one or two more... something like an S or C?)
3
78 DON
?? 218 O 10000708
1st. off if a Buick engine the distributor will be in the front. To tell if it's a big block or small block all you have to do is look at the valve covers. 5 bolts holding them down is a 455. 6 bolts holding them down is a 350.
Tom T.
Tom Telesco
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This visual engine identification article may help you:
https://www.teambuick.com/reference/...eng_visual.php
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28A188465 - VIN derivative
2 = Pontiac - GM division which built the car
8 = 1978 - model year
A = Lakewood, GA - plant which assembled the car
188465 = car serial number - started at 100001
Engine code
XD = Pontiac 301 V8, 1978, A or B body, 140 Hp, 2 bbl carb, TH350 automatic transmission, L-27 engine option
?? 218 - Build date code
?? = C would be for March, S not used
21 = 21st day of month
8 = 1978 year
Block casting number
10000708 = used on '77-81 Pontiac 301
In 1978 Buick used the 301 in some LeSabres. Attached are some pictures from the '78 Buick shop manual. Distributor is in the rear and turns counter-clockwise. The engine size 301 should be cast in the side of the block per standard Pontiac practice.
What has been, can be again. (Bob Wills, 1942)
ouch.
the 1971 Riviera only came from the factory with a 455 cubic inch engine. having somebody swap in a 301ci Poncho is just painful to think about.
if you happen to find a BUICK 455 ( Oldsmobile and Pontiac also had "455" engines, but they are completely different architectures ), have a local Land Rover v8 guy work on it.
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WOW Thanks for all the awnsers
Jeah i supposed it wasnt a big block 301 ... well ill have to find a Buick 455 (id like to keep it original)
anyways thank you all for the help
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