Is It A Chevrolet 305 or 350?

  • Thread starter Thread starter Jim M
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Jim M

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i have a 1979 pontiac firebird
the engine has a 4 barrell carb and is very fast
but i have no clue if its a 305 or 350 hell maybe evev a 400
is there an easy way to tell without running the numbers
all i know is it is very fast and has a mild cam
i thought the 305 were not that fast
i have a small block
is not stock
the stock engine was a buick 236
 
It is not possible to tell unless you remove a head or the oil pan and check the bore size. Assuming the engine is around the year mentioned that is.
 
No way to tell with this info. If it was built with a 231 Buick motor then the eight digit of the VIN code would be an A, I think. 305 and 350 Chev V-8s look the same, so you can't tell like that. You could even have a 301 Pontiac motor in this. Go to a mechanic that knows motors as the subtle differences between them they will be able to tell you just by looking at it. I would.
 
do you have a small block or big block engine. 350 small block can be fast if built right
 
is it stock? if it is use the VIN and look at the Chilton's manual if its not stock the manual wont help
 
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