I have an 87 350 TPI and someone recently said I have 19# injectors and someone said 22#. Can anyone tell me for sure which I have ?? I also want to know that if I change up to 24# which I am told can handle 450hp if I really need to have my prom changed. I am currently using a Hypertech Thermomaster chip. Thanks.

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87 GTA 350 L98
K&N filters, beefed up TH-700r4, Accel Manifold, Ported Plenum and Runners, Fuel Press. Regulator 49.5psi, air foil, modified MAF, SLP cold air box, Hypertech Thermomaster chip w/160 thermostat, MSD 6AL and Blaster 3, B&M shift kit & megashifter, Moser Ford 9in Rear with Richmond 3.50 and locker, Edlebrock TES headers and Cat Back,Hotchkis setup in rear, Poly suspension and Koni in the front, relocated MAT, bypassed IAC, 300 lbs lighter

Fastest ET's
Stock-0-60 6.8, 1/4 15.0 @ 94
Best-0-60 4.7, 1/4 12.8 @ 112
Norm-0-60 5.2, 1/4 13.2 @ 108

 

You've got 22's if they are from your stock L98. I am running Bosch 24lb. blue tops and a chip that has pulse width set very close to stock, so I would say yeah you can run the 24s with a stock 350 chip no prob.