- Joined
- May 26, 2001
- Messages
- 9,208
Some would have to a back to back comparison between heads on a stock block. But based on tuning my friends car running mid 9s@15 psi boost with a 274 motor, I don't think you can do that with production style heads or can you? His injector duty cycle is double mine with same injectors and turbo and same boost can someone explain that?
The flaw in your data here is the OP is wanting to do this on a production 3.8 block, NOT a big bore 274 cu.in. block. Also, no other info on turbo, conditions, build and other items are not given, so what is to explain?
Bison already stated runner volume is going to kill port velocity which means at normal RPM it most likely will not be very responsive.
Another big issue is the small bore may not clear the open valves, and even if the block is chamfered for clearance, the mixture flow will be greatly disturbed and screw up the combustion process.
Like Ken said, this is a waste of time, effort, parts and $$$$ to do this, so what we have here is an "internet fantasy" discussion with no real chance of it ever being done!