New owner and have a couple questions please.

[davecarney2]

Been lurking around this board for a long time never posted. Great forum!!!!!

Finally got a truck but not sure about a few things.

The guy I got it from told me it was a rare truck cause it is a 59 with an original 447 engine. Everything I have read was 347 in a 57 but 336 in 59. Here is the truck and a pic of the engine. Can anyone tell me what engine it is by looking? I havent had any luck finding the plate yet gotta de-grease a bit.

[OrrieG]

Welcome! I found this on line:

"The standard engines for 1959 GMC trucks were the in-line six-cylinder 270, 302 or the 347 cubic-inch V-8. The cylinder block and upper crankcase were cast as one-piece. The type 270 motor produced 130 to 140 horsepower at 3,400 rpm with a compression ratio of 7.75-to-1. The type 302 had a 4-inch bore and stroke and generated 160 horsepower."

Based on the horsepower figures on the data plate, which are higher than the 270 and 302 I am guessing it is a 347. You might find more information over at stovebolts.com.

[Dan in Pasadena]

Originally Posted by OrrieG

Welcome! I found this on line:

"The standard engines for 1959 GMC trucks were the in-line six-cylinder 270, 302 or the 347 cubic-inch V-8. The cylinder block and upper crankcase were cast as one-piece. The type 270 motor produced 130 to 140 horsepower at 3,400 rpm with a compression ratio of 7.75-to-1. The type 302 had a 4-inch bore and stroke and generated 160 horsepower."

Based on the horsepower figures on the data plate, which are higher than the 270 and 302 I am guessing it is a 347. You might find more information over at stovebolts.com.

Translation? Seller didn't know what the hell he was talking about, S.O.P.

[dwcsr]

Originally Posted by davecarney2

Been lurking around this board for a long time never posted. Great forum!!!!!

Finally got a truck but not sure about a few things.

The guy I got it from told me it was a rare truck cause it is a 59 with an original 447 engine. Everything I have read was 347 in a 57 but 336 in 59. Here is the truck and a pic of the engine. Can anyone tell me what engine it is by looking? I havent had any luck finding the plate yet gotta de-grease a bit.

102 8p S 17844A

1/2 ton (10)
Long bed (2)
336 V8 (8)
Pontiac MI assembly plant (P)
S is the series

If it were T and not an S then it could have been a 347 or if it was a 152 instead of a 102 on the first 3 number it could also be a 347 in 58-9

Could be a 59 or 9 depending on the 17844 and where that falls in the production run.

Get the numbers on the block at the oil pan next to the dip stick.

This is a 336 Pontiac (GMC) engine
http://www.angelfire.com/mi2/jrvvehi...afterSmall.jpg

http://p-wee.tripod.com/index022005.jpg

Its is rare even with a 336 and its a complete motor air cleaner to pan. Thats worth a few bucks by itself

[mr48chev]

Originally Posted by Dan in Pasadena

Translation? Seller didn't know what the hell he was talking about, S.O.P.

that's all to normal if you are dealing with someone who isn't a serious truck nut.

He didn't give you the pitch that "GMC's are better than Chevrolets because they have a heavier duty frame under them" did he? That was one that my former stepfather and his cronies passed around in the late 50's.

That's a good looking truck that doesn't look like it has been messed with too much so you might just have a good one. The engine was based on a 347 Pontiac and was fairly stout in it's day.

[davecarney2]

thanks for the information all. I will get the numbers off the engine.

[Maximus]

yea as mentioned these old GMC's with V8 options got Pontiac engines, tons of torque!