B Brian New member Aug 21, 2010 #1 Okay, so I bought this 85' Chevy Silverado w/ a 350 engine not too long ago and I was wondering what octane of gas I should be using for it... It originally came w/ a 305 engine but it was swapped out with the 350. Any help?
Okay, so I bought this 85' Chevy Silverado w/ a 350 engine not too long ago and I was wondering what octane of gas I should be using for it... It originally came w/ a 305 engine but it was swapped out with the 350. Any help?