When the TPI small block came out, it was the high performance combo that powered Corvettes and Camaros. It didn’t make much power, but it made more than most anything else available at the time. It also didn’t rev much. And people always said it was the Tuned Port Injection intake that kept it from revving. Other folks say it was the horrible HEI ignitions. It might have had something to do with the tiny camshaft as well. But one thing everyone always talked about was the fact that the long runners on a TPI unit were good for torque. So if this is true, can you make 500 lb-ft of torque with one on a 350? How about a 383? Richard Holdener is doing the tests right here.

Video Description:

TRI-Y VS 4:1 HEADER TEST-WHICH ONE MAKES MORE TORQUE? HOW MUCH POWER DOES A TUNE PORT 350 MAKE? HOW MUCH TORQUE DOES A TUNE PORT 350 MAKE? CAN YOU MAKE 500 LB-FT OF TORQUE WITH A TUNE PORT 350? WHAT CAM SHOULD I RUN IN MY TUNE PORT 350? HOW WELL DO AFR L98 HEADS WORK? CAN I RUN TUNE PORT INJECTION ON A 383 STROKER? WHICH HEADERS SHOULD I RUN ON MY TPI MOTOR? CHECK OUT THIS VIDEO WHERE I TRIED TO MAKE 500 LB-FT OF TORQUE WITH MY TUNE PORT INJECTED 355 MOTOR. THE COMBO WAS EQUIPPED WITH AFR L98 HEADS, TESTED WITH MULTIPLE CAMS AND EVEN WITH TWO DIFFERENT STYLES OF HEADERS (4:1 AND TRI-Y). CHECK OUT ALL THE DATA AND LET ME KNOW WHAT ELSE I SHOULD HAVE TRIED.