Squealing kind of noise

[85chevy86]

I put a new 350 in me truck last month and finally got to drive it around. Well I drove it on two short trips and all was good. When I went to drive it the third time I was getting a loud squealing type noise but only under accelerating. I checked the headers and the driver side one was lose I tighten it up but it still makes the noise but I don’t think it is as loud now. I got new gaskets on the way to work thinking I may have blown that one out. Is there anything else I should check if that is not it?

I also read that it could be the speedo cable. I did not think about looking at that when I was driving but I do know it use to bounce a little around 20-30 mph.

The 350 has a bigger cam, roller rockers, and Pete Jackson gears. Its in a 1986c-10

Thanks
Evan

[77 350 Shorty Wide]

Good Morning,

You may have answered your own question. A geared timing setup can make quite a bit of noise especially if your unfamiliar with their sound.

Also check your belts. Rub a little soap on the top while the engine is running.

Have a Great Glorious Day! Terry

[85chevy86]

I though about the gears also but it seems like a higher pitch sound. The first few starts the starter was acting like it was hanging up a little so I am going to check that after work also.

thanks Evan

[motornut]

A loose power steering belt can squeal so can a water pump bearing,may want to check those
water pumps can stop squealing after a engine start.
sometimes a broom stick moved from each part to ear can narrow it down

[85chevy86]

Thanks Motornut I will try the broom stick thing. I hope it is not the water pump it is a new team G water pump the guy put on be for he sold me the motor.

[85chevy86]

I found the sound. I feel kind of dumb. I did not know a flex plate really flexed. When I put on my mini starter I did not measure it just seen that it was not touching. I guess when I hit the gas it was close enough to touch. Shimmed the starter and all is good.

Thanks again
Evan

[xrcr]

Doing Dumb stuff is one way to learn, just learn from it. If not people will think you're stupid. Don't ask how I know....

[85chevy86]

I really did not want to put what it was but I figured it may help someone else.

[motornut]

I had to remove them on mine PO put in to fix the mashing of gear teeth,when i got it
I removed it,and replaced the flex-plate,its better now
on the truck it was hard to tell,but compared to the old one...
it's mentioned the gap is as little as a paper clip,when properly meshed