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Hi Guys, I've posted previously about our intentions for a GM fuel management system upgrade for these engines, but this new thread is going to be specific to the 2007-up E37 ECM. About the E37 ECM Introduced with the 4.3L engine in the 2007 Silverado. This engine uses wasted spark and...

450-500hp engine build. Using SyTy intake manifold and fuel rails. Adjustable regulator. What injectors do you guys recommend and who sells them? Thanks!

Brand new Comp Cams camshaft pulled 12/26/12 from a 4.3L SyTy engine build by TPIS (December 2012). 210/215 @ 0.050 112lsa 4 degrees advance 500 lift flat nose I pulled this cam only because my build requires a step nose cam for a prototype camshaft sprocket we are working on for 4.3L/SBC/LT1...

After reading information on the forum about Vortec heads, rocker arm studs, rocker arms, and valve covers, I'm finding conflicting information. I'm working with Vortec heads that will accept M10x1.5 studs. I need studs. What should I use? How about the ARP studs...

Hi Guys, We just received our 1992 Typhoon engine back from TPIS. I was surprised to see the early style camshaft and timing set. TPIS was unable to idenfity a late (step nose) camshaft for this engines. It seem there are no step nose 4.3L cores for making a custom grind. For what we are...

Hi Guys, I need some help with turbo selection for a Typhoon engine build. TPIS is wrapping up the engine build and I'm now shopping for a new turbo. I can get engine details if necessary, but basically it's a mild build with nitride crank, forged pistons, Vortec heads, mild cam, original...

This upcoming week we will be shipping a 92 Typhoon engine to TPIS for a rebuild. Because it may (or may not) be used in a project vehicle in the shop, we would like to do a mild build. In other words, the more crazy we get with a build, the harder it is to sell later because of the costs...

Today I mocked up the SyTy exhaust manifolds on a set of Vortec heads and found that the bolt pattern did not match. Somehow I overlooked this while reading about the Vortec head swap. Can someone please fill me in on how this is commonly addressed?

Having been through several aluminum intake manifold installs (TPI, LT1, etc), I've been disappointed with the results of... New intake manifolds because after a short while they begin to oxidize...especially in a damp environment. Bead blasted intake manifolds because they also oxidize...

Hi Guys. I have a personal interest in updating my SyTy engine with newer GM fuel management. Being a V8 guy, I'm still researching what GM has done with fuel management for 6 cylinder engines since the year 2000 ish. History...Several years ago me and my guys (of EFI Connection, LLC) developed...

Hi Guys (and Gals)! My name is Mike. I'm a long-time SyTy enthusiast. Years ago (1999 ish) I built up a 1995 S-10 frame with the AWD components from a 1993 Typoon and a V8 conversion. The truck has gone through many fuel management changes since then and has ultimately been used for prototyping...