[AC Promotions]

I have a stock dry sump LT4 with a Harrop 2650 and the newly released Harrop port injection plates. They are similiar to the Too High PSI plates except they are located in the valley plate and take the short EV14 LSA type injectors. The question I have is that if I run the stock boost level of 12 psi and target 750 wheel horsepower on 93 octane or E-40 what size injectors should I be looking at when using the Reflex + system?

And yes, this is a Pro-Touring build but just pretend its a stock ZL1 LT4 with Too High Plates and a 2650. It does have a LT5 throttle body, 1 7/8th inch custom headers, high-flow cats (and test pipes for road racing), full-3" exhaust and a Magnum F. The object is to run a bigger supercharger at low boost so this almost 4000 pound Lemans can run long road courses without cooling or fueling issues. The fuel tank has twin ZL1 fuel pumps.

[radz28]

I was suggested to run 60s. I'm just a 2650, RFBG, 103, and E. I don't have intentions for a cam or headers or anything else. Others have put down around 800 WHP with a similar set-up, so I believe this might suit you, too. Unless you're planning on mods' down the road, these will probably be just fine.

[AC Promotions]

Thanks for the reply. So 60 lb. Injectors are just slightly bigger than a stock LSA 56lb. Units. Do you have a supplemental fuel pump and what E-content are you running?

I plan to run 93 on a street tune and probably no more than E-40(for cooling) on a road course. With a stock short block the plan is to limit the horsepower to reduce potential failure. I’d like to size the secondary injectors for a built short block but even then, no more than 850 wheel. So maybe 85 lb. Injectors at the max? Thanks for the assistance.

[radz28]

Originally Posted by AC Promotions

Thanks for the reply. So 60 lb. Injectors are just slightly bigger than a stock LSA 56lb. Units. Do you have a supplemental fuel pump and what E-content are you running?

I plan to run 93 on a street tune and probably no more than E-40(for cooling) on a road course. With a stock short block the plan is to limit the horsepower to reduce potential failure. I’d like to size the secondary injectors for a built short block but even then, no more than 850 wheel. So maybe 85 lb. Injectors at the max? Thanks for the assistance.

I am running a DSX LOW SIDE, but just installed this stuff, so I am tuning right now. I'm still trying to polish the tune for 91 right now, but expect to start E' soon.

I believe I was told these 60s were good to about 1000 WHP in my very mild set-up, so it would seem it might suit you, too, all things being equal.

[KingLT1]

The LSA injectors will be plenty for your setup.

[AC Promotions]

Thanks for the assistance. The Harrop port plates use the EV14 compact injectors so stock LSA injectors it is!