homemade engine plates

[sunkistcamaro]

Hi guys,
Im putting in a LS1 and 4l60 into my 69 camaro.
My goal is to fab my own engine adapter plates for the camaro's stock mounts. I decided not to buy a set because I would like to keep my newer drive shaft that I had made for the 700r4 that just came out. I think this can be done as long as my eldelbrock headers dont hit anything.



Long story short....
I see all these mounts out there with a countersunk bolts. Do you know what size bolts are needed to thread in to the block? I guess I can get them from MSCdirect if not locally.
Has anyone had any luck making there own plates? Im using 1/4" plate steel.
Thanks!

Edit:
Reference plates -> http://www.streetlegaltv.com/photos/data/500/-12.jpg

[sunkistcamaro]

This is what Im using for reference dimensions.

[69importkilla]

I've made them succesfully with a TRUMPF laser but for the effort just purchse the Edelbrocks. They come with all the fasteners and arent that expensive. Just my two cents..

[1badchevelle]

I've made them succesfully with a TRUMPF laser but for the effort just purchse the Edelbrocks. They come with all the fasteners and arent that expensive. Just my two cents..

x2......

[sunkistcamaro]

I dont mind buying them as long as it puts the tail shaft at the same location. I really don't even know if thats possible.

[b-man]

If you're using Edelbrock headers then use the Edelbrock plates, the two are made to work together and keep the engine and trans in the stock location.

They only cost about $70, make it easy on yourself.

[sunkistcamaro]

Oh I did not know it leaves the engine in a stock location!
I thought it pushes it back a inch. I have edelbrock headers & autokraft pan.

[69importkilla]

on my 69 the Edelbrock plates kept everything within a 1/4" of the stock location.

[sunkistcamaro]

Cool, that should allow me to keep my drive shaft!
Thanks