I just got an '81 camaro (stock, not z28), and the 267 stock engine has obviously been rebuilt... Is there any way to tell of somone rebored or strocked the engine without tearing it down and measuring the inside of the cylinders? I read that this 267 is a "debored" version of a 302, so i assumed that it must have been possible to rebore it do a larger size...
2007-01-17 07:52:16 · 7 answers · asked by cool_camaro81 2 in Cars & Transportation ➔ Car Makes ➔ Chevrolet
I've personally never seen a 267 in a Camaro ever!! All the ones I ever worked on had 305 in them. How is it obvious the motor has been rebuilt, new paint? The way to tell what type of motor was originally installed is to take the VIN to a dealer and he can tell by the eigth digit which motor code it was or is. Anyways, there is no way to tell if a motor has been bored out. If it has been stroked, longer con rods and/or larger crank rod throws, it will have a much higher compression of a stock 305 which was somewhere around 125-130. Try a compression test and see what the results are. If you don't like it, I wouldn't even mess with a 267 or a 305. Find a 350 and fix that up and you will be an extremely happy camper. Good luck.
2007-01-17 14:21:27 · answer #1 · answered by Deano 7 · 0⤊ 0⤋
No there is no way to tell without taking the heads off and using a bore micrometer. The 267 was actually a small-bore version of the 305, not the 302. The 305 was a bad enough engine, but the 267 is in a league of it's own. No offense, it's just not something that's worth messing with.
2007-01-17 16:33:23 · answer #2 · answered by Anonymous · 0⤊ 0⤋
It sounds like you are trying to get a bit more umph out of your Camaro. Unfortunately, there is no quick way to tell if a motor has been over bored. Back in the early 80s many car manufacturers built these "baby" V8s in an attempt to reduce fuel emissions. They were renowned as being dogs, performance wise, not to mention they really didn't reduce the emissions as much as they were hoping they would. Ford tried the same thing. In my opinion, unless you are trying to do a perfect restoration of this car, ditch the boat anchor 267, and swap in a 350 or a 383 stroker. The money you would spend trying to get that 267 to produce any kind of decent power would be much better spent on a crate motor. You will be happier in the long run, and have a much better performing machine, and if you stay out of the throttle, you can get relatively decent gas mileage with a new V8.
2007-01-17 16:16:23 · answer #3 · answered by Doug K 5 · 0⤊ 0⤋
The chevy 302 was a 327 block and 283 crank. The 267/305 is a weakling. It can't be overbored enough to get a 4" bore, which is what the 302/327/350 had. Get a 350 block for real HP.
2007-01-17 19:54:07 · answer #4 · answered by electron670 3 · 0⤊ 0⤋
Yes there is. Do a compression test and compare. The original 267 had a 8.3 to 1 compression and with larger pistons and possible "stroker crank and rods added you will get a different reading
2007-01-17 20:03:08 · answer #5 · answered by Anonymous · 0⤊ 0⤋
their is a way but first you wood have to find some won in a truck and tractor association the make a gage that mashers CFM that they can put in the spark plug hole turn the motor over and see what the CFM is. they yous them in pulling to see if Any body is cheating with more cubic inches than the are spouse to have. good luck
2007-01-17 19:12:58 · answer #6 · answered by master of none 3 · 0⤊ 0⤋
How would you imagine being able to know without measuring the cylinders? Are you hoping a really nice psychic will come along and answer this.
2007-01-17 15:58:38 · answer #7 · answered by Mike Hunt 5 · 2⤊ 1⤋