Sounded mean and responsive until it didn’t. I should be grabbing another 8.1 next week. Already have a line on one.

 

Nice. What do you think happened? Bad engine from the start? Or loss of oil pressure?

 

I cranked the engine plenty and got the oil pressure up to 60psi before tossing in the injector fuse. Well know for sure when I take it apart.

 

I ran 3rd gear all the out on my 2017 camaro and hit 7500rpm. I ended up floating a valve and bending a pushrod. Very odd but a new head with valves was $328 from chevy. Took about 3 1/2 hours in the garage.

 

So number 8 cylinder exhaust valve spring broke and dropped the valve, taking out the piston.

 

Well...... dang, hope you get this back going!

 

Plan on grabbing another 8.1 this week.

 

Can you hone the cylinder and save the block?

 

A .010 overbore would likely take care of the block. I’m just going to grab another engine though. I’ll keep this one for parts.

 

That's what i was thinking. Maybe building it up if you plan on keeping the car around

 

I didn't realize these engines still used composite head gaskets. Definitely would move to a multilayer steel

 

Back out, but from the top this time

 

It is the same. Express vans and the L31 GMT800s also had DBC with the LS style PCM.

 

They may both work. I just swapped them to trouble shoot the engine not running well, which may have been a combination of the cam sensor being wired backwards and the exhaust valve spring on cylinder 8 being broken. The throttle bodies are a bit different, I can send a pic of them side by side.

 

can u explain the motor mount part more in debt, I’m about to install my 8.1 in a 2000 trans am with a LS1Kmember and was wondering if u used the lt1 motor mounts and ext*

nvm I notice now u did

 

So I’m still figuring this out. Lt1 mounts work on a sbc or bbc. Issue is that only two of the bolt holes line up with the engine on both sides (not 3). I also had to cut spacers to add beneath both frame side mounts, to lift the engine off the rack, as well as clearancing the oil pan. Issue would then be T hat when the engine torques (with rubber clamshells) it will likely still strike the rack. I actually ordered some moroso solid mounts for an lt1, today so I won’t have that issue.

As for your application, I know companies make a solid and poly engine mount setup for sbc and bbc for use on an ls1 k member. That’s def your best bet. The lack of options for a 93-97 crossmember makes it a little more challenging to find a good solution.

 

Just paid $1400 tax included for an 8.1 out of a 2001 Silverado 3500 with 59,000 miles on it. It’s from a local junkyard that I’ve bought stuff from in the past. Supposed to be out of the truck and ready to pick up mid next week.

 

I started cleaning up the intake to make it look pretty. Plan on giving it a polish.

 

Engine #2

 

Stand up radiator before engine 2 goes in