1969 Black/red 435

[Greg L.]

Re: 1969 Black/red 435

You are correct Ken, the manifolds are in fact 2-1/2" but the exhaust pipes are necked down to 2" for some reason. You can see that in these pics of my 69.

[Kenneth B.]

Re: 1969 Black/red 435

You are correct Ken, the manifolds are in fact 2-1/2" but the exhaust pipes are necked down to 2" for some reason. You can see that in these pics of my 69.

GREG
SUPER RESTO. Is your Corvette done now. My 70 LT-1'S have 2.0 manifolds that neck out to 2.5 & back in to 2.00 at the muffler. Go figure.
KEN

[Greg L.]

Re: 1969 Black/red 435

Thanks Ken. The body is back on and it's had it's first coat of lacquer but I'll have to leave the final painting now until next spring when it warms up.

I don't know why GM necked up and necked down their pipes.... Now that I think of it I was told that they were necked down in 69 to help with the emissions by chocking the engines......

[Tom M.]

Re: 1969 Black/red 435

Sorry Ken but as far as I know 69 was the only year for that era where ALL engines(yes even the L88) had the 2" exhaust. 68 was 2-1/2" and 70 to??? was also 2-1/2" but 69 was only 2". I know it sounds funny but that's the way it was.

My 69 L36 had 2-1/2 " on it too but it wasn't original so it now has 2" to make it correct.

I didn't know that 68 had 2 1/2" pipes, thanks for the info,
why did GM install 2" in 1969 only ???