Cascade Crew

91RSVert

Needing advice on stabbing the dizzy for one of these. I know they have to be in very specific, and this is the part of motors I am not good at.

Does the factory hold down put it in its propper place, or is it like any other sbc and I can spin the dizzy however?

:help:

Sellmanb · Member Joined: 30 Nov 2004 Posts: 727 Location: Tigard, OR

it's like a SBC, but if you stab it in wrong, the computer will compensate for the mechanical timing, electrically. But it will throw a code. In order to properly set the timing, you want it at 0 degrees, so you just watch what the PCM sees as base timing with a scan tool, move the scan tool to the engine bay, move the distributor till it says 0, then tighten the distributor down. Clear the code afterwards.

BTW, i'm guessing this is for your truck?

blue89 · Posted: Fri Aug 31, 2007 6:45 am Post subject:

Hey now, what do you have cooking in your garage? I have the 97 in the Tahoe, but I know nothing about it. How do you take the dizzy apart to find out if its at 1?

91RSVert · Posted: Fri Aug 31, 2007 7:05 am Post subject:

83Z28BlackBetty · Posted: Fri Aug 31, 2007 7:12 am Post subject:

is this for the "top secret project" Wink

if so...sweeeeet

~JAKE

91RSVert · Posted: Fri Aug 31, 2007 7:17 am Post subject:

Heres whats cooking Twisted Evil

95 model cast 683, 350 block
810 heads
108deg ICL cam

All above known as GM crate motor.

90-92 Z28 TPI intake
86-93 camaro MSD coil
93 Camaro z28 plug wires
96 c1500 timing cover
96 c1500 dizzy
96 c1500 maf
96 c1500 ICM
96 c1500 egr (not at first)
96 c1500 heated o2 sensors
96 c1500 harmonic balancer
2001 express van wire harness
2001 express van knock sensor
GM 0411 ECM (same as vette and LS1's)

Later, I have headers that need y-pipe ball flanges to install.

blue89 · Posted: Fri Aug 31, 2007 7:37 am Post subject:

I love pics of parts piles Very Happy

That looks good. OBDII just like my Tahoe. Would it be advisable to go to the standard dizzy instead of the crab? I don't know anything about that system yet.

91RSVert · Posted: Fri Aug 31, 2007 7:41 am Post subject:

Your hoe uses a different ECM/PCM. However, I forget, some years you can just repin the harness and make it work with the LS1 unit.

You have to use the crab dizzy because it has a cam sensor in it.

I am the first to try and use the old style coil with a newer system. Old coil has more power *tim allen grunt*

Quasi-Traction · Posted: Fri Aug 31, 2007 9:35 am Post subject:

you said its "vortec 350"?

I assume it uses the standard SBC intake mounting pattern and not the vortec style?

91RSVert · Posted: Fri Aug 31, 2007 9:37 am Post subject:

Quasi-Traction · Posted: Fri Aug 31, 2007 9:39 am Post subject:

Ah.....couldn't quote casting numbers off the top of my head, but it looks like you'll have a pretty sweet setup there when all's said and done.

91RSVert · Posted: Fri Aug 31, 2007 12:03 pm Post subject:

Thats cool.

The 810 heads are TBI swirl ports. Not that great in the HP spec, but very decent for TQ, which is what I'm going for.

The cam doesnt have the greatest lift. But that can be easly changed down the road.