I am doing my first LS Build and would like to know if I need to upgrade my injectors, intake?

Things I am doing so far:

Cam kit with lifters and push-rods : TSP “MADD MAXX” Cam Specs: 228/232 .550"/.550" 110+5

Long-tube headers (catless exhaust)
3200 stall
342 gears with mini-spool
Stock bottom-end
HP Tune

 

I think you should fine for naturally aspirated. You could always get some L59 flex fuel injectors, which had a higher flowrate. Or aftermarket of course.

 

The stock injectors will deliver about 400 HP of fuel, max. You'll probably need an upgrade there. Either the flex-fuel ones, or 8.1 marine ones.

The intake is pretty good. Without knowing what you're going to be doing with this it's not certain that it needs a change. If this just in the same truck I'd leave it. The TBSS one is better butt not sure it's better enough to be a worthwhile expense at this level.

Biggest flaw I see is those highway gears. That's GOTTA go. WWWWWAAAAAAAAAYYYYYYYYY more important than the intake. Even with that much converter it'll be kinda soggy at low speeds.

 

It's gonna be my weekend hot rod, I also have my original 373 rear-end of you think that would be better?
also.. would I need to change fuel pump for the L59 flex fuel injectors?

 

Not sure what that means. Friday night parking lots? Street & strip? Trailer queen strip only? Pretty-day cruiser to tour the countryside with your SO? "Weekend hot rod" kinda covers ALOT of ground.

Yes 3.73 would be better, even if not ideal. That's what came stock in my truck and it's not really enough even for just driving around on the street. Why did you downgrade to 3.42? Better brakes or something?

I don't think so. That pump worked fine on both gasoline and E85, which requires, what, 60% more flow than gasoline or something like that; so it should work fine at 20 - 25% more gasoline, on occasion and not even constantly like E85 would, than the original LM7. For all I know the FF trucks might had used the same fuel pump anyway, I don't really know that.

 

Weekend hotrod = Chebby dedicated for doing donuts on the way to Starbucks ☕

Yeah, 3.73 would get my vote. I think those are great all-around gears.

 

Gonna be street / strip 😁