CB Performance 1679 kit opinions

Black77 · Post by **Black77** » Wed Nov 12, 2003 10:16 am

I am planning on a rebuild for my 77 standard. CB has a kit with everything I need with 1679 cc's of displacement. Just want to consult the best before I drain my wallet.

A_67vdub · Post by **A_67vdub** » Wed Nov 12, 2003 2:06 pm

If thats the slip-in 88's, then stay away from it. The extra displacement isn't worth the tin-foil thin cyliders. But, if it's the machine-in 88's, then sure, go with it. They have super thick cylinders.

I'm definitely not the best, so make sure you get a second or third opinion.

Steve

slowsixtyduece · Post by **slowsixtyduece** » Wed Nov 12, 2003 9:21 pm

Ya, dont mess with the slip ins. If you want to get more power, get it bored for 90.5mm pistons, or 94's if you wanna go big. A mild 1776 will do quite well w/ reliabilty, gas mileage, and power. If you dont want to bore the case, just build up a 1600 with some better carbs, cam, heads and exhaust, etc..... good luck!

Guest · Post by **Guest** » Thu Nov 13, 2003 12:16 pm

If you intend to keep the stock FI system a 1775 or larger is probably not advisable - nor anything more than a mild cam. I know you can run a 1679 with the stock FI without any issues but I think that's about as far as you should press it without grafting in injectors, airflow meter, etc. from a larger engine. The FI heads also have smaller valves (33x30mm instead of 35.5x32) than "normal" 1600 heads do so breathing would be poor for a big engine without upgrading them.
As Steve & Chris say, slip-in 88s are just too thin for almost every application and I wouldn't recommend slip-in 87s (1641cc) for that car either. Machine-88s are great though (if a little hard to find).