OK, the block in the '69 has never been touched so I'm planning to use it to build a 355. I will get the cylinders bored out 0.030” over and the deck machined down to give a deck height of 9.015” (This is to be confirmed). This will give me a quench on 0.040” when using a Fel-Pro 0.026” MLS head gasket and KB 112 pistons. It should be good for a static CR of 10.1:1.
I want to build something more for cruising, so good torque from idle and max torque somewhere between 3000 and 4500 rpm. It can be all over by 5500rpm. I think my selection below will give me that.
I really like David Vizard’s book "How to Build Max Performance Chevy Small Blocks on a Budget". So my build and parts selection will be influenced by this book. I would have built a 383, but with the180cc AFR Heads I have I think a 355 is more suitable. It should make over 400hp though, so it won’t be a slouch. My computer has just died so I can’t check it on Desktop Dyno.
Asterisks * show the items I already have. The rest I have now ordered except for the push rods. I want to check those for length first.
So the build will be;
- Edelbrock Performer, 600 cfm (Probably the only thing I will use from the old engine)*
–MSD Pro-Billet Ready to Run*
- Edelbrock Performer EPS
– AFR 180cc Eliminator
– XR270HR Retrofit Hydraulic Roller (218/224 @ 0.050" Lift)*
– Howards Cams Street Series Retrofit Hydraulic Roller Lifters
- Comp Cams High Energy Die-Cast Roller Rocker 1.6 Ratio
– Howard's Cams Chromoly (I think)
-Comp Cams Double Roller 2100. *
- ’77 SBC Block, 0.030” Over*
– Scat Balanced Rotating Assemblies 1-90150BI. Which includes the pistons, con rods and crank below;
-KB 112 Hypereutectic +7cc
- 6.0" Scat Pro Stock 4340 Forged I-Beam
- Scat Pro Stock Cast 3.480" Stroke
– 6.75”Professional Products PowerForce*
- Summit Standard Volume*
- Summit 80gph
- Weiand Action Plus – Short*
- Moroso Street/Strip, 6 Quart & Moroso Windage Tray*
– Doug’s Headers, Tri-Y’s*
– 2 ˝” Flowmaster American Thunder - Stainless Steel
- ARP Everywhere
Now I also don’t expect the gearbox to be that fresh, so I will be rebuilding it with the B&M Transkits 30229 and adding a B&M Aluminum Deep Transmission Pan 30280. I will be using a more suitable 2000 rpm stall B&M Holeshot Torque Converter. I have also ordered a new Summit brand 58 tooth fly wheel.
I'm really impressed with the Doug's Headers. They are really nicely built and the ceramic coating is really well done internally and externally.
I've thrown the 327 back together. It definitely won't run now though. I don't know what I'm going to do with it.