Who knows the most??? Ls4!!!
Got a nitrous company trying to work on a wet nitrous plate system on our motor!! I would go out and measure it but I figured someone might know!!! And or what the contribute to us getting a plate nitrous system hahaha YES SiR!!!!! This is no joke!!! Anyone know the measurement??
From this drawing you can get the LS4 throttlebody bolt pattern - they are the inside pattern.






