So in my quest to turbo everything in the driveway I've wound up buying another pair of turbos. Going in my nova with a 5.3 799 heads nnbs intake glide 3.42 gear 275 drag radial. Street car with a fair amount of track time to be had in it.

Gt45 specs
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T76 specs
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Wanting a fairly quick spool with great power up top. Which ever I don't use one of em is going on my truck.

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id go with the gt45 ,,, they do make the gt45 with bigger compressors

 

Thanks I'll stick with the gt45s on it and split the other pair between the c10 and s10.

 

That makes the least amount of sense to me.

The gt45's will spool extremely slow by comparison in a twin configuration. The 76/65 is a silly turbo to start with. That much of a split is never ideal. The gt45's are great for singles LS 5.3 setups up to 650hp or so and will put out more HP per pound of boost in a single configuration than the 76/65. So if you are sticking with what you have, I'd put the gt45's on the single setups and use the 76/65s for twin setup.

Ideally sell the 76/65's and look for something more suitable for twins. 72/68's 66/65's etc...

 

im sorry i thought he wanted to run a single gt45 on 5.3,,, thats why i stated they made a bigger compressors for the gt45

 

Thinking I have it wrong... When he said pair I thought he meant a pair of each and 3 cars total. GT45 will perform best per pound of boost, 76 will spool faster.