Head flow and power differences question / discussion
I don't think that has been brought up in this post. When I talked these options over with my builder, he said the Indy heads are a little over kill in his opinion for a street car. Maybe this is what he means.
I'm not trying to second guess him, just trying to understand and make the best choice.
What part(s) of the intake system (top end) contributes to or effects throttle efficiency and tip in performance the most? In other words, what makes the Trick Flows the best for this situation?
Thanks for your input.
In my opinion, It’s a combination of parts that lead to certain outcomes. What I think your engine builder is saying is the Indy head ports are large for a street car, which a street car is certainly heavier than a race car, a set up the Indy head is more suited for and probably designed for.
The whole engine should be seen as a system. The single plane gives the best HP up top and not so much torque down low vs the dual plane. These things you know and have seen on stuff like engine masters.
Pretty much, any intake you use is a limitation on the cylinder head unless it’s a tunnel ram port matched to the cylinder head on the engine block to be used and the displacement is small. As in not taxing the capability of the carb, intake and cylinder head.
Increasing the displacement, adding a large cam and attempting to spin the engine to 9K ….. yea… limitations are here.
Let’s get back to reality and your engine.
There’s a lack of information on your engine here.
In general, what is to large for on set up is not enough for another. To say the Indy heads are too large for a street engine is a generalization and probably more on point than anything with most people. The larger ports can and probably will contribute to a soft bottom end for a “STREET CAR” trying to be driven in a civil manor. Or like Mom would drive it to Sunday church & dropping the kids off at school.
This is the area I’d suggest error smaller on the side of caution is a good idea.
List out the engine specs! The goal of the vehicle & what your after.
