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Well i was finally able to run my 306 last week. And i am extremely happy my goal was to make 400hp and be able to rev it as high as i want, and i got both.
The parts list is a stock F1 block, eagle cast 3 inch crank, eagle forged i beam rods, forged icon pistons with a 6.8cc dome, aluminum ebay speedmaster gt40 heads with 2.05 1.60 valves, a speedmaster victor jr ripoff. I sent the intake and heads to Wes King to port and he did an amazing job. The cam is roughly 550 lift, 290 Duration, on 106 ls. With comp 1.6 rr's, comp edm solid flat tappet lifters, and manley pushrods. And 650 holley dp.
Edit: i forgot to give Chamber size and deck height. The Chambers varied from 58 to 59.5 cc's and we decked it so the piston came out of the hole a bit, just under 6 thousands. Making the cr 11.07
It made 403hp @ 7200 and 339pft @ 5200. It's still on the dyno and needs more tuning, it's still pretty lean and i need to get a distributor that will handle the rpm. If you look at the last dyno sheet below you can see how it stumbles. It also has 20-50 break in oil. Once everything gets ironed out im guessing we can get 25-30 more numbers out of it.
Thanks to everyone that helped out and offered advice, it helped for than you know.
Ps. I know the plug wires got burnt i replaced them after break in.
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The parts list is a stock F1 block, eagle cast 3 inch crank, eagle forged i beam rods, forged icon pistons with a 6.8cc dome, aluminum ebay speedmaster gt40 heads with 2.05 1.60 valves, a speedmaster victor jr ripoff. I sent the intake and heads to Wes King to port and he did an amazing job. The cam is roughly 550 lift, 290 Duration, on 106 ls. With comp 1.6 rr's, comp edm solid flat tappet lifters, and manley pushrods. And 650 holley dp.
Edit: i forgot to give Chamber size and deck height. The Chambers varied from 58 to 59.5 cc's and we decked it so the piston came out of the hole a bit, just under 6 thousands. Making the cr 11.07
It made 403hp @ 7200 and 339pft @ 5200. It's still on the dyno and needs more tuning, it's still pretty lean and i need to get a distributor that will handle the rpm. If you look at the last dyno sheet below you can see how it stumbles. It also has 20-50 break in oil. Once everything gets ironed out im guessing we can get 25-30 more numbers out of it.
Thanks to everyone that helped out and offered advice, it helped for than you know.
Ps. I know the plug wires got burnt i replaced them after break in.
View attachment 1069110 View attachment 1069111 View attachment 1069112 View attachment 1069113 View attachment 1069114
