CHEVROLET ENGINE VACUUM LEAK

My Truck Is Making A High Piched Whistling And I Took The Belt Off And It Still Did It. I Now Think That It Could Be A Vacuum Leak.

I Have A 80 305 Eng. Which Has Been Bored 60 R/v Cam, Edelbrock Carb, Edelbrock Torker Intake. Ihave Checked The Compression (140/150) All...

Van Is A G20. I Have An Issue Where I Struggle To Accelerate Past 65 Mph While Going Uphill. I Can Shift It Out Of Overdrive Into Drive And...