- Nov 14, 2006
- 16
- 0
- 1
Hey guys,
In the planning stages of building up my '67 289 to a street machine from the ground up. It's all apart and at the machine shop waiting for direction from me. I thought I scored on a used set of Edelbrock performer 1.9" int. heads, under the impression they were ~60cc chambers and could be finessed to reach 54cc for around 10:1. Well, CC'd them and got average of 64cc! So that totally disrupts my plans. Options are to:
1) domed pistons: less efficient. Ideally flattop or dished would be best, can't seem to find -10cc domed pistons either
2) mill heads down -10cc: is that even possible with regards to intake manifold, valvetrain fitment, can of worms?
3) sell them and keep looking for heads with smaller chambers
Now I'm researching stroking the engine to fit the heads but I really don't want that much power as everything else down the line needs upgrading. I'm learning a lot taking on this project. Can't wait to get to making some decisions and moving forward. What are your thoughts?
Thanks!
In the planning stages of building up my '67 289 to a street machine from the ground up. It's all apart and at the machine shop waiting for direction from me. I thought I scored on a used set of Edelbrock performer 1.9" int. heads, under the impression they were ~60cc chambers and could be finessed to reach 54cc for around 10:1. Well, CC'd them and got average of 64cc! So that totally disrupts my plans. Options are to:
1) domed pistons: less efficient. Ideally flattop or dished would be best, can't seem to find -10cc domed pistons either
2) mill heads down -10cc: is that even possible with regards to intake manifold, valvetrain fitment, can of worms?
3) sell them and keep looking for heads with smaller chambers
Now I'm researching stroking the engine to fit the heads but I really don't want that much power as everything else down the line needs upgrading. I'm learning a lot taking on this project. Can't wait to get to making some decisions and moving forward. What are your thoughts?
Thanks!
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