danmustang

HELLO IVE GOT A 1989 GT THAT HAS 70MM BBK GT-40 INTAKE AND CAST HEADS BBK COLD AIR B303 CAM AND WHEN I PUT IN CAM IT DIDNT MAKE A REAL BIG DIFF, I WAS WONDERING SHOULD I GO UP IN INJECTORS (THERE STOCK ) AND MAYBE HIGH VOL. PUMP
OR SHOULD I JUST DO THE E303 , THE CAR ONLY HAS 80,000 MILES SO I DONT WANT TO PULL MOTOR JUST YET BUT PLAN ON BUILDING SOMETHING MEAN THEN THANK YOU FOR YOUR INPUT

primetime5.0

you dont really gain a whole lot by putting in a cam unless its matched for the heads, what do you mean by cast heads?

danmustang

GT-40 HEADS THE PERSON THAT PUT HEADS ON THE CAR BEFORE IT WAS MINE SAID THAT THE B303 WAS THE LINE UP FOR THIS CAM

danmustang

hello again i ve got 28 psi fuel pressure i droped tank pull know do i go out and get high vol, pump and which pump should i get 155 psi 190 or 210 psi please help thank s

FordMustangXBA

It's not PSI, it's liters per hour. To answer your question, 190lph would be fine for your setup if you wanted to go with 24# injectors.

danmustang

iam running stock injector but will up grade so the 190 will be fine also iam running the b303 cam what s the diff between the b and the e or x

bouchermb

Do MAF, if it's stock and then injectors. You didn't need to do a cam, unless you are doing heads. 190 lph FP is fine, but you'll need 24 lb. inj. too. 28 is low for FP too.

gspfunk

I think he said he's got the GT40 heads, too, not for certian though. The B will give you lots of grunt down low, but not as much top end. I would look at the TFS stage 1. Seems to have a good profile for a decently modded street car.

If I misunderstood and you're on stock heads, I would recommend upgrading or having some work done on them. You won't notice much difference w/ stock heads. You can tell pretty easily by looking at the casting #'s on the end of the head. E7 is stock 5.0 HO. Also, the GT40's will have 3 parallel bars and the GT40P's will have 4.

Your FP should be closer to 40. The stock fuel pump is 88lph, so the 190 would work fine. I would also get an adjustable fuel pressure regulator (FPR).

bouchermb

+1 on the AFPR. Especially with the FP issues.

P Zero

A cam is one of the BEST mods you can do to a 302. You fuel injection guys need to realize that when you add a cam you have to let the computer knowto send more gas. On a carbed car this happens automatically for you. Gsp, A B303 will not add down low grunt, it adds all in the high end, thats why its better than a E303, the valves stay open longer so more A/F can get in and more exhaust can get out. I would recommend 1.72 rockers to increase the lift with the B cam, however. I think you need a programmer, chip or reflash...whatever your particular car needs.
-P.