The combination is very important. It has to all work together but the bottom line, the power is in the heads and "bigger is better" is not always the trick.
I disagree with the quote I highlighted. .....I bet a closed chamber 302 head will out power a open chamber 318 head if both are built with the same compression.
I was just wondering like on a budget or a car you dont want aluminum heads on if the 302s could match. What are size valves are in a factory eddy?
I personally don't like the look of aluminum heads I guess I'm weird but I'm also not a racer I like an authentic and original appearance engine in a classic car.
I'm not following you on this one? What's funny?We're not the only ones with issues. I laughed at this one.
Tuning a 1406 Edelbrock Carb with Bog
I how much was gained from the 1.88 valves vs the 1.78 valves in the 302 heads. Id like to the the same test done with each step. Instead of going straight from 360 to "best effort" 302s go from 360 to stock 302s then work up the heads just to see what does what and where. I dont think I'm gonna fool with the 1.88 valves in my heads. ( unless I can find a way to cut new seats myself) but I am gonna port them. And depending on how much money I have when it comes time to start putting it back together I am gonna try to have them milled .02-.03.
We here on FABO aren't the only ones with that problem. The fix is bumbling along.I'm not following you on this one? What's funny?
Yes valve shrouding is an issue. Some days I wish I had a dyno. LOL It would be fun to test some things out.Not speaking to the port design, X, J, swirl port, or throwing in the "x" factor of compression, or whatever. Speaking solely to the design and flow of the cylinder head in the chamber, the closed chamber design will not flow as well as an open chamber head.
Hold the phone....! I'm gonna side with you this time willrun.... LOL! It's because of that very important qualifying phrase that you inserted: "...in the 1/4 mile...". Application, application, application.....where do you need the torque band, and how wide and high do you need it. Drag racing and tractor-pulling are off in their own special corner of the performance map, and pumping fuel-air into the engine as fast as possible is most of the battle there.302 heads were around since 1985. I will stick to my guns (or my opinion ), open chamber heads will outflow closed chamber heads any day, if given the same compression it will be the winner. Flow and compression are both winners, but if I have to chose between the two, I'll take flow in the 1/4 mile any day. But that's me, and I know i'm kicking a dead horse... LOL
BTW, OP, nice to see you are keeping things in order.
Just one gotcha to warn you about: Some manuals list the torque on the rocker shaft bolts wrong; it's no more than 15-18 ft lbs torque, not the 25-30 ft-lbs incorrectly listed in some places. Let's just head off that boo-boo at the pass!