ok guys i have a couple of newb questions, number one being what is the stock psi on ls1 injectors? im pretty sure mine need replacing so i was just thinking about getting a set of primo ones from F.A.S.T. but i dont want to put my computer on the fritz. number two being, does throwing an ls2 crank in an ls1 = stroker? im unsure of what stock ls1 stroke numbers are, and if im looking at it correctly an ls2 is 3.65, thanks for the help guys.

 

Check a GM Service Manual for your year Camaro.

 

Your injectors on an LS1 should have an AVERAGE range of 156-176 kPa (22.5-25.5 psi). If you do a typical balance test, which requires 3 tests, the reading on the first 4 cylinders on the first reading should be 296 kPa (43 psi), on the 2nd reading, you should have the following: cylinder 1 should be 131 kPa (19 psi), cylinder 2 should read 117 kPa (17 psi), cylinder 3 should read 124 kPa (18 psi), cylinder 4 should read 145 kPa (21 psi). The pressure drop should not be more than 10 kPa or (1.5 psi) of the average pressure drop value if the injectors are flowing properly. Calculate the pressure drop for each injector by subtracting the 2nd pressure reading from the 1st reading. Should not be more than 10 kPa or 1.5 psi. Hope this helps.