just blew my engine. what is needed for a l67 install
 

so i just blew my engine (l32) :(

Don't use l36 flexplate. It is balanced different. Either use the converter from the l67 donor or slot the l67 holes for your converter.

hmm
also i got it all installed and running. i just found a stock 04 monte supercharged hpt on hptuners repository and copied all the values onto mine except the transmission values.

Not sure where you heard it was internally balanced, there is a rather large weight on the flexplate and in the balancer. See image below (which also shows the drastic difference between an NA and SC plate):

http://www.gmtuners.com/tech/3800flywheels.jpg

Sure people have run them without rebalancing anything, but why would you want to, especially after you just toasted an engine?

Just re-drill your SC balancer for the new converter. That's a far better short term solution.

the big issue here is the donor car didnt have a transmission. so there was no torque converter nor flexplate to use. and i need a car right now. either way the current flexplate and transmission is temporary until i get the money for the triple edge one.(3 months most likely)

Grind the holes in the l67 plate. You WILL cause damage with the l36 plate

And transmissions don't come with flexplates

that im sure is dependent on the junk yard. cause this motor came with no flex plate. but the motor is back in the car and its running. the transmission will be pulled out and swapped when i get the new one.

I have a question for you bumpin I did a 3.8 n/a swap from my 3.5 to that 3.8 right now I got a flex plate from a supercharged one to see if it would start and idle. it did but I don't want to hurt my trans. would that weight do that much damage? if I drove it around the block. I do have a set of supercharged heads cam and right now saving to get a good remand supercharger. would the supercharged flex plate do harm? I wanted to ask because I know the internals of my 4t has the double chain and majority of what the hd has because I asked the shop to put the best in. but I wanted to ask because of the work you have done to your 3.8. plus I wanted to get input from you because of that good looking thing you have

3800s are in junkyards everywhere, I'm surprised you couldn't find a used flexplate somewhere. Even if it's just temporary, is it really worth the risk considering what an engine costs?