The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 3OTT

**Stephen717** · 02-14-2017, 05:06 PM

I know my truck had the 307 switched to a 250 l6 out of a 73 c10 before I got it, but what does everyone mean by 30tt?

02-14-2017, 05:06 PM	#14
Stephen717 Senior Member Join Date: Aug 2016 Location: Loris South Carolina Posts: 429	Re: 3OTT - Inline 6 thoughts I know my truck had the 307 switched to a 250 l6 out of a 73 c10 before I got it, but what does everyone mean by 30tt?