Small spring upgrade I. Progress. This is a small upgrade over stock. Summit essentially says these are essentially a factory ls6 spring when it comes to spring rate. I verified the wire is slightly thicker than stock and the uncompressed height is a smidge higher than factory. This should add up to...
Cutting (grinding) the crank would not change the piston compression height. Offset grinding the crank like Upson did would change the required piston compression height. I guess Ti rods for a 4.3 V6 would be too expensive as there are no factory take-outs to snag used. Don't the LZ4/9 use the same...
So the big end would need to be narrowed like a typical SBC rod when converting to our engines as the LS engines have a similar rod width to the old sbc rod It seems that the coating comes off the rods at the big end, since that's where the rods in a stock V8 application share a rod journal, so they...
Ls7 also uses a Ti rod but it's listed at 6.067. Weight is similar to ls9 rod. With a 3.9 crank, ls7 rod, you would need a compression height of about 1.1. And whattaya know. It exists! Several dishes exist. I found a 16cc which is about 11.7 CR and a 26cc dish for about a 10.2 CR. 600 for forged pi...
Expensive proposition but I wanted to get the info in writing so I don't forget about it. Ls9 Ti rod info. Wrist Pin Dia. 0.984 Weight 452-482g Length. 5.99 Big end dia. 2.225 Lz9 has pin dia of .945 and a big end of 2.375. So the ls9 small end can be bushed I would assume, and maybe the big end bor...
I pulled a datalog of a stock lz9 with the lnj stock cam, vs the 3.5 with the aftermarket cam. you can see the boost curves at the same rpm here. much less boost on the 3.5 clearly my turbo is oversized for the engine at lower rpm. the 3.5 needs more rpm to make up the difference which is to be expe...