Real Fiero Tech

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...

Tough call. If you're more of a 0-70 stoplight racer go auto. If you want it to pull past 80mph go manual.

I would like to see an additional mount location at the pan circled.

And a gusset on the backside of the vertical section. There seems to be plenty of room.

Trimming of hinge bracket necessary for the Lucerne mount? Isn't that the water manifold already employed by a member here?

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...

Jegs lists crower lifters as a possibility.

https://www.jegs.com/i/Crower/258/66208-12/10002/-1

Do you have an LS style alt laying about. If not I have an ls4 one here

Nice. Loving it

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...

Curious as to what the factory hub runout is? Maybe it's already been mentioned

Exhaust is looking good. Welds look good from here

Looking good on that bracket.

Here is the current state of the engine. Lnj cam in, ready for some reassembly.

It seems the camshaft is discontinued from gmparts direct.

I used the 2009 equinox lt trim which should be the 3.4

Welp. That's that I guess. No more available.

You asked why not keep the vvt. I show why, and you say "so".

Hey man, when you do your 3.9 on the stormtrooper you can spend hours tuning your vvt cam for an extra 400 of additional rpm.

J upson who knew his vvt cam was not dialed in correctly but dynod anyways just to show what can happen. This was a gtech style road Dyno. Drastic power drop.

It's gonna run a microsquirt amp. Vvt is being deleted for simplicity of swap I have yet to see anyone who kept vvt with an micro or megasquirt do a Dyno to see where their power peaks. However j upon did dynod his with his modified vvt and it wasn't dialed in correctly. I believe power fell off bef...