2-1/2 inch ram horns cast iron Chevy exhaust manifolds
I have seen 1 set of those in my lifetime....
Below 4,600 RPM the engine made more power and more torque with the cast iron manifolds on the motor than it did with open full length 1-5/8th inch primary tube headers.
Above this RPM the headers won hands down but how frequently are you running your engine above 4,600 on the street?
Hell yeah....then throw on a smaller carb.. lot more torque there to....
Any related thoughts on long tube headers vs. shorty headers? (lower rpm torque, etc)
Yep......oh u want them to? lol
For a cruise car, doing the odd show off.. its all about torque.. throw the HP out the window... headers espec off the shelf, they are more higher end HP up around the 6000+ rpm range... and screw everything below.
Bottom line it works like this .. a unmonitored (ECU) non injected , carbed engine has at best a efficient power range of around 2500 to 3000 rpms.. higher the performance the narrower the power range.
Every now and they some guty pops up with a car, nothing to fancy and it goes like a bat out of hell.... WHY?
the 'go components' are designed to work in a given power rpm range .... no compromises or brag component BS.....And the cam , dynamic compression ratios at given loads match the octane of the fuel at a given load and rpm.
So its not hard and rather cheap to get a basically stock sbc with the right cam to pull high 13s in mid 90s under 5000 rpms, and still run rather economically.. on todays stds.
Torque is what gets u moving quick
HP is what gives u a lot of speed when things, like wind resistance becomes a factor over 90/ 110 mph
Thats a far different 'mind set' right...