man thats a great vid.. this is my build so far.. its a junkyard 350 stock rods stock crank cast pistons .040 and 040 heads with about a million miles on it i dont even know if its even going to turn on lol.. ill be using megasquirt for ecu and stock tpi induction, summit cam.. this is what i have so far.. all this was going to go in the rx7 but i got this 81 cutlass for free so i put evrything i had in the cutlass and decided to make a better build for the rx7... dont clown my work i know its back yard and the welds are from my friends shop, turbo is gt45 ebay and headers are ebay headers with ebay vbands and the crossover is ebay stainless also.. 8)

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Looks good to me! I'm using the same turbo, in a similarly bootleg car

Old turbo...


The builds I REALLY like to see are the ones where people show what they can build, not how much money they spent

 

any updates on this turbo?

 

more progress.........

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it runs already just need to buy intercooler and piping and a muffler and tune some more and see how it goes

 

where are you guys buying yours from on ebay? the only listings im finding lately are from speed_daddy

 

^^^^speeddaddy seems to have the most "gt45's" on ebay.

To the guy with the twin chevy making 900whp (or anyone else running these turbos) I would like some more feedback, videos ect. That video of your car looked sick! How much power do you think these turbos could support in twin form or single even.
That video makes me actually want to buy a pair of these and swap out my precision 60mm's.

 

1 turbo is good to 800-900 hp on a healthy 350.

 

well i started tuning on the street still need a lot of work but just wanted to show a lil pic of my log
my gt45 with no intercooler starts making 1lb of boost at 2500rpm at about half throttle.. dont remeber what gear i was on but u get my point

 

man thats awesome...i pretty sure i've decided on this turbo for my next build

 

I'm seriously considering two of these turbos.
Anybody wanna give me a ballpark on what you think spool rpm would be with two of them on a 434ci sbf windsor, 225 heads, and supervic intake, 9.2-.9.5:1 compression, th400 trans.
Thanks guys.
Also anyone with any other feedback running these turbos please give us up to date info about how long you've ran them and whatever else info you can provide about your setups and spool times, power, 1/4 or 1/8 times or just general this think f'en rips feedback.
That would be great as I'm sure everyone who clicks this link when something new is posted is hoping to get that sort of info, I know I am. Thanks to all who have been sharing so far, keep it coming.

 

It spools a lot quicker than I expected. What Summit cam is in it (I/E @ .050" duration)? What is the static compression with the GM 040 heads?

 

the cam is the 224 224 duration im still using stock rockers im sure if i change it to some roller rockers with 1.6 ratio it would work a lil better..

as far spool time i also think since im using E85 fuel thats helping it spool a bit faster since it needs about 30% more fuel than regular gas..

im guesstimating my compression ratio to be 9.0-9.5 :1 with the 040 heads..

as far as the guy asking about the 434 i think u should be able to spool two of them.. especially if u go E85 or methanol (M1) then for sure ull be able to spool them..

 

well, just ordered one, where do you guys get the DP flange at?

 

i would recommend buying the one chacata had posted.. but what i did i just bought the 3.5vband and milled it down to 3.25 where it connects to the turbo.. seems to have worked ok..

 

well i finally boosted 12psi man was it moving .. this stupid thing works better than i thought, too bad my motor is all worn out.. its burning oil and has lots of blow by but its runs great under boost lol... well i think im done testing with this old motor im going to try put a decent 350 together.. hopefully with no blow by it will run better ....

 

How would this turbo spool up on a mild 302? Im assuming alright?

 

an Ebay search for GT45 came up with seller: formulajdmparts
Selling for $32 shipped.

dnamotoring
Selling for $30 shipped

 

I am looking at running a pair of these on my 55'. My friend wants to buy my 62-1's.

Think they would work better on a street car than the 62-1's with a .96 a/r?

462ci BBC
7.52:1 compression
224/232@50 112 lobe cam
ported oval port heads
carb'd blow through setup
Th400...

 

It depends what you want. My calcs. estimate it to _start_ spooling at 4500 RPM with the right cam. If it were my setup I would stick with the 62-1's

The China GT45 CW probably flows a max. of 75-77 lb/min. The 62-1 probably flows around 62 - 65 lb/min. I think the GT45 exh. side is just too large for your setup.

 

With that low a compression and planning it to be a street car simply forget about this turbo and go with the two 62-1's