I have a 350 .030 over with 9.5:1 compression, comp cam 210/220 dur @.050 .500/.510 lift, world products heads with 2.02/1.60 valves.

My TPI setup is in my sig. My exhaustis edelbrock TES headers with stock I pipe( i have a 3 inch ordered already).

My problem is that my car launches great but falls off bad on the top end. i know my exhaust needs some improvement, but do you think i would notice any gains from 24# accel fuel injectors?

I am using 22# injectors right now and they are stock and for all i know the have 120,000 miles on them. it seems to hit the barrier that every one talks about. first gear is great, but as soon as it gts about half way through second it falls off bad.

Give me some opinions.
thanks

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*1989 RS
*Red, Daytona Turbo fiberglass hood, chrome 16x8 IROC wheels
*355 CID
*TPI ported plenum, SLP siamesed runners, Edelbrock high flow intake
*Edelbrock TES Headers (getting SLP 1 3/4 this summer)
*Richmond 3.73, Auburn Posi
*Modded 700-R4, 2800 stall converter
*NO recent time slips.

 

There's no way to know for sure unless you have a scantool to show what your injector pulse widths are. If they're too high and you're still lean, then yes you need larger injectors.

Its possible you can get new life out of your stock ones by having them cleaned and flow-tested.


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1991 Camaro Z28
5.7L 5-Speed (originally 305)
317 RWHP, 418 RWTQ
13.23 @ 107.62 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Member: SoCal F-Bodies
-=ICON Motorsports=-

 

Yes, get them cleaned and matched and get an adjustable fuel pressure regulator. Crank up the pressure, and you'll get more flow on the big end. I've read from many experts that the 22#s can handle 400+ horsepower.

 

I still have stock injectors, 50 psi, on my engine but its running a little lean so I'll go for #24....

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GTA -89:383, 4-bolt,Free flow muffler,dual 3" HF cats, Edelbrock headers, Canfield heads, 1.52 RR 7/16, ZZ-9 cam, Big Mouth, AS&M LTR, !plenum, 52 TB, MSD 6AL, TPIS level V prom, Superior shift-kit and all the minor mods,looking for a SR ...
http://www.itv.se/tacs/members_cars/m279/m279.html (Swedish Trans Am Club)