My 6g74 tt build

I recommend grinding the girdle, or send it to ray and have him machine it down for you. Or really even just have your local machine shop do it. But either way, you can use the stock 72 pan then and everything fits very much like factory from there.

^this. Narrowing the girdle and using a 72 4bolt pan is so simple that there is no reason to mod a 74 pan.

Just as a caution, if you go with bigger turbos later, I would suggest upgrading rods before turbos;)

Thanks for the tip, I'll keep my eye out for something a little bigger for the interim while I wait to build it, like a 15g or something, be nice if it had an HL wheel. Not sure how much boost it will take, but my 10:1 3.0 on 6psi was a blast so I'm sure the 3.5 will do just fine.

I wonder if I could get lucky and my already modified NA pan would fit the 74 after modifying the girdle.. not with my luck. I guess I'll also keep my eye out for a 4 bolt block pan.


Thanks again.

2bolt pans are too narrow. Need 4bolt 72.

Thanks for confirming!

Plus u need a 4bolt TT pan for the 74 oil pump.