General engine tech -- Drag Racing to Circle Track
- Posts: 1139
- Joined: Wed Feb 18, 2004 5:30 pm
- Location: Tri-Cities, TN
Just remember the smallest head Chevy put on a 427 CID engine was 253cc. The AFR235 will do it but you will need headers. I would buy the head with spread port exhaust so you can put a 2" header on it. Small, Large, Medium....no matter the adjective used to describe 427 CID, it's still 427 CID.prairiehotrodder wrote: ↑Wed Jan 10, 2018 9:23 pmIs it possible to build a pump gas 427 sbc that makes 700 hp N/A ? Without using exotic parts. Just plain stuff that anyone can order from a speed shop? I may be helping a friend build such a motor. We are looking at a Dart SHP 427 assembled short block with flat top pistons. Maybe around 11.5 CR and a solid roller. He already has a AFR composite race intake with a 4150 flange, an MSD crank trigger, Daytona sensors ignition box, 1.75" hooker headers, an 850 QFT carb and a real fancy moroso pan. What could we keep and what should we get rid of? What heads to use? Current motor is a 11-1 CR 383 with AFR 195 heads and a Hyd roller. Car is a 78 lemans, runs 10.80's with 4.56 gears and a turbo 350.