The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - LS Experts --- What are these holes for??

usmcchevy · 04-17-2011, 03:33 PM

Steam vent. Some years have the rear holes blocked off and just use the front others use them all.

04-17-2011, 03:33 PM	#2
usmcchevy Has more rust than truck... Join Date: Apr 2005 Location: Ivanhoe, MN Posts: 2,421	Re: LS Experts --- What are these holes for?? Steam vent. Some years have the rear holes blocked off and just use the front others use them all. __________________ 1972 Custom/10 SWB, 4.8/4l80e Build thread LSx Swap FAQ index