chub

I Have Read The Archives But Would Like Advice On Adding Side Pipes On My 66 327 350hp Original Set Up. I Would Prefer Also To Hear From Anyone Who Has The Same Setup And Added Side Pipes.

Thanks,
Chub

Dicecal

I'm in the process of doing that conversion on my 65 Coupe. Most of the Corvette vendors have "kits" that include all of the parts to do the swap. You will also need to get a rear filler panel. I bought one from Corvette Image, it does not fit that great. I bought side pipes from Allens, and I'm having fitment issues with them as well.

wombvette

My advice would be, dont do it, but im an old fuddy and dont like the noise. Yes, noise. The under car pipes are much more mellow, and I can drive to the beach and still hear when I get there.

6Coupe6

I have a big block with side pipes and love them. Wanted to comment that I had similiar issues with my Allen pipes not fitting properly. I was forced to have a pie shaped section of each pipe cut out and rewelded to fit properly. I would not recommend their side pipes after my experience. I spoke with them at several shows and they felt I wasn't lining pipes up on donuts correctly.

chub

Thanks for responding Dicecal. That is also my concern. I am not looking for the loudest, since mine is a vert but I really liked the original sound.

Chub

chub

I hea you Wombvette, but I am from that era ...I use to sell them when they were new and I like the sound.

Chub

chub

Thanks 6, I am concerned about the fit also.

Chub

Dicecal

Also, there is a shortage of side exhaust covers. Just about everyone is out of stock on them. I would try the sweet thunder pipes. They make pipes with 2 1/4 inch baffles which should not choke your motor. I bought Allens pipes that have 2 1/4 baffles, but they are totaly out of rig on both sides. He has some manfacturing issues, that he is not addressing.

Nikko

I have a question on the sound vs. the Horsepower - does a 327 / 300 sound different then a 327 / 350? Looking at adding pipes to a 300 hp, but I want to make sure the sound is gonna be right. Thanks - Nick

North of 40

I did the conversion this past summer and love them.

Easier to do than I thought and the sound is pure heaven to me although not everyone agrees. My wife finds them annoying which makes me really like them even more.

My car has the same set up as yours. 327 350hp

I collected a lot of information regarding installation. If you want, email me and I will forward it to you.

panchop

my allens purchased about 5 months ago bolted right up.

chub

Thanks North,
I will pm you.
Chub

chub

Thanks Panchop.

L79vette66

I been running Allen's for over a year. No issues. Sound GREAT.

Hitch

I installed the Allens and had to adjust them to get them to fit to my liking but it was not a big deal. To adjust how they sit you may need to bend the rear tab to get the rear right. The front only requires you to install them loosely and adjust as necessary. I will agree with the statements that the jigs they use could be a little bit off none the less. I have always thought since my car is not perfect it was my car not the pipes. My drivers side pipe could be about 1" shorter from the motor to the side of the car. Dave

chub

Thanks Dave,
Mine is not perfect either, just perfect for me.

Chub

66 big block

at allens exhaust web site they now have gm type pipes with right size baffles Iam thinking of these for my 427 I would hope they sound like gm

chub

66, I saw that also but I really would like to find a vendor who has a product that fits without having to jury rig.

Chub

MikeM

You want advice, eh? I'll give you a little. I remember seeing just a few sidepipes on new '65-'67 Corvettes in one of the bigger corvette markets in the country back then. In 1972, I added sidepipes to my newly purchased '65 Coupe. There were none around to look at for a reference. Nobody I knew had one. I liked them okay. A little noisy but that didn't bother me. Would I do it again? No way. It's not the noise. Everybody seems to have them. Like KO's. Never saw but a couple of them when new.

I wouldn't hack up an original body now to put them on if somebody GAVE ME the pipes and covers. If I ever replace them, it will be with a set of under car pipes. Fortunately, I saved everything I took off to put the sidepipes on.