CLASS RACER FORUM - View Single Post - Mopar 273-4bbl Combo

James L Miller · 11-25-2016, 02:18 PM

Boy, everyone is telling me to get the wallet out. I think I have $40 in there or maybe a bit more. It looks like the rods and pistons might be some of the big ticket items. It looks like Melling has some 1/8" wall sleeves that would reduce a 318 stock bore (Ø3.91") down to the 273 range (Ø3.66" or so). I'm thinking using Hardblok in the wimpy 273 blocks will be a cheaper way to go. The Hardblok is about $100, sleeves are around $20-40 each, plus machining. I'll see what my machinist/engine builder wants to do, but the Hardblok looks like a less expensive way to beef up the thin cylinder walls. I wonder if the later 273 blocks had thicker cylinder walls?

11-25-2016, 02:18 PM	#7
James L Miller Member Join Date: Apr 2005 Posts: 494 Likes: 6 Liked 25 Times in 16 Posts	Re: Mopar 273-4bbl Combo Boy, everyone is telling me to get the wallet out. I think I have $40 in there or maybe a bit more. It looks like the rods and pistons might be some of the big ticket items. It looks like Melling has some 1/8" wall sleeves that would reduce a 318 stock bore (Ø3.91") down to the 273 range (Ø3.66" or so). I'm thinking using Hardblok in the wimpy 273 blocks will be a cheaper way to go. The Hardblok is about $100, sleeves are around $20-40 each, plus machining. I'll see what my machinist/engine builder wants to do, but the Hardblok looks like a less expensive way to beef up the thin cylinder walls. I wonder if the later 273 blocks had thicker cylinder walls? __________________ Mopar 2 Ya!