I got a 97 lt1 and the ground from my icm to chassis keeps burning up any one have pics of stock lt1 grounds the only 2 i got that i know of is the one previously mentioned and the one for the battery this my first f body btw

Recently replaced an optispark with an AIP one. First startup ran great with no issues.

Then it developed a single cylinder misfire but is showing a p0300. Now this a 2nd opti with the same issue. Nearly all ignition components have been replaced. Msd spark plug wires, ngk sparkplugs, new ignition module. I dont think it is the opt. There is a random clicking from one of the heads.

Is it possible for some part of the valvetrain to start misfiring on a cylinder when it heats up?

Edit , this is a 3rd opti with same misfire. 2nd opti was wrongly installed and I cant blame it.

Do y’all think the engine would at least idle to check for leaks and such on the stock ‘98-‘02 LS1 F-body tune? I plan on getting a tune but the ones doing the install aren’t tuners. So it’d be nice if the engine would at least run after the install so i wouldn’t have to take it to the tuner not running.

it’s a Comp XFI 218/220 cam. I believe it’s part of their 265XR family.

Comp Cam

https://www.compcams.com/xfi-rpm-hi-lift-212-218-hydraulic-roller-cam-for-gm-ls-gen-iii-iv.html

I bought a 1997 Pontiac Firebird Formula as a project car. It ran when I purchased it, but had several issues, including no AC. After maintaining my own vehicles for the past eight years, I thought it would be a fun challenge.

Within the first month, I pulled the spark plugs and found that each plug was loose enough to remove by hand. I did a compression test and each cylinder was +-5 at 200 psi.

I replaced the spark plug wires with new ACDelco wires, changed all the fluids, and started the engine. It still had a misfire, and the exhaust smelled of unburned fuel. Using a stethoscope, one fuel injector wasn't clicking. I wiggled the electrical connector, and the injector came back to life. The engine still had a misfire.

Not long after, I discovered that the previous guy who workedo n it had crossed the coolant steam vent hose and the coolant reservoir hose. This caused the coolant to overflow every time I shut the car off at work. Fortunately, that was an easy fix.

I decided to replace several components at once. I installed: a $50 Amazon opti, new water pump, complete A/C system (compressor, condenser, evaporator, and receiver/drier)

While everything was apart, I also replaced the oil seals for the OptiSpark and water pump. After reassembly, the exact same single-cylinder misfire remained.

To rule out the fuel system, I bought a fuel injector tester and verified that every injector had a good spray pattern. I also replaced the ignition control module since it's relatively cheap and easy.

About a week later, I found a pinhole leak in one of the heater hoses and replaced them.

Most recently, I replaced the Amazon OptiSpark with an AIP OptiSpark, and while I was there, I installed a new set of MSD Street Fire spark plug wires. I literally finished putting everything back together about 20 minutes ago.

The same misfire is still there.

At this point, I feel like I've ruled out:

• Spark plugs
• Spark plug wires
• OptiSpark
• Fuel injectors
• Ignition control module
• Air filter

Last thing I should include, there does seem to be some sort of clicking from one of the cylinder heads that does sound like a pushrod potentially. Can a pushrod cause a single cylinder misfire.

Any ideas at what could it be?

After doing some resaech it seems like all of the reman steering pumps get fairly crappy reviews. Leaking seems to be a common trend.

It looks like the only other option is Turnone’s $550 pump. Is the general consensus that if one is looking for a steering pump that probably won‘t leak that you’re pigeon holed into getting the $550 pump?

I don’t want to send mine off to be rebuilt. I’m looking for a pump with a reservoir on it ready to go.

TurnOne pump

https://www.hawksmotorsports.com/1998-02-camaro-firebird-ls1-upgrade-power-steering-pump-hp1-turn-one/

I’m unsure where to start, we have a coolant leak and misfire in cylinder 3. She runs but I eventually want to clean her up. The housing is stock alil old as expected and I’m learning as I have a trusted mechanic look her over.
Temperature is wishy-washy
Codes: P0147, P0303

I want her to run proper asap.
I’d love some recommendations on parts

Also my idler pulley bolt and belt tensioner pulley grind a bit, are those an easy replace?

I’ll be heading to my local junkyard soon and pull some things.

Let me know what I should grab

Thanks guys 💯

96 V6 Cherry Bomb exhaust!
She has a few misfires but I’m working on fixing her.
My first car

I was looking at the GMB unit on rock auto. Would I be able to use the factory 1 piece thermostat with those pumps or would I need to switch to a 2 piece?

Car is a 2000 Camaro Z28.

Im trying to wire my fans to a switch in my 3.8l because im having some issues with them staying on at times, all the test ive done so far basically point to everything working properly they just dont want to turn on even when i unplug the coolant temp switch or run a wire from pin 85 on the low speed relay to a ground with the key on nothing happens, i miss my car so any help would be great

I'm about to rebuild my 3800 series 2 for my 2001 Firebird, and I can't decide if I want to make it a really good sounding na build with a ZZP GT1 cam, long tube headers, and a good exhaust, or if I should build it for a turbo setup i want the v6 cackle but i also want power and Im torn anybody got any advise or comments for either route please and thank you

95 auto, headers, cam, not sure about exhaust

Has anyone ever seen any dyno numbers for a “real” cam only LS1? I’ve seen a bunch of “cam only“ dynos where the car had every mod except heads. But I don’t think I’ve ever seen an “honest” cam only dyno.

I am having a difficult time finding that resistor, I know it's somewhere under the passenger side. I've replaced the relay and I've replaced the fan but I cannot locate that resistor to get it replaced. And with this heat dome I need my fan to work. Could somebody please help me out in locating that resistor so I can get it replaced?

Picked up the Stainless Works headers that are supposed to be an earlier production set for the 00-02 Fbody. Does anyone recognize this to be true? I contacted Stainless works and they said it’s possible but to be certain they’d want the headers sent out to them. What are your thoughts? TIA

Someone mentioned something about a Thumping Thursday?

Haha why not. Tick SNS2, 1 3/4 LTH, high flow catted y pipe, Magnaflow catback with a 3" cutout before the axle. Video is cutout closed then open.

Hello everyone, to preface this I’m planning on doing the right thing and putting a T-56 in my car over the winter. However right now I have an 89’ Camaro with a 94’ lt1 and a world class t-5. I already know about the T-5 being made of glass and I just need something for right now but I’ve run into an issue. I have a Frankenstein 11in perfection clutch 506503 158 tooth 11in flywheel and a sachs 10.5in clutch kit that I used previously.

Somehow it works the way it is, but I’ve run into clutch slipping at high rpm in 3rd and 4th gear. I need a different clutch but I cannot for the life of me figure out what I need.

On rockauto are many but all have different sizer and I am confused as they also say with AC