Another heads cam questions
Thread Starter
Drifting
Joined: Aug 2014
Posts: 1,630
Likes: 181
From: North pole
Another heads cam questions
Im looking to piece together my heads and cam project for my 04z for next winter..my car has lt headers vararam and is ONLY and weekend car no drag racing. I purchased the btr stage 3 cam. or should i have bought the btr stage 2. I plan on porting my stock 243 heads, will the stage 3 hurt my bottom end? Even with head porting? I know the stage 2 would be better! Not sure what to do now?
Burning Brakes
Joined: Dec 2017
Posts: 755
Likes: 272
Well...your statement about the stage 3 cam “hurting” your low end power is relatively subjective. In reference to the stage 2, it’ll certainly make power later (maybe 500 rpm later), but it won’t be a dog. It is going to make more HP/TQ then what you have now regardless. The peak power with a stage 3 will be better then a stage 2, but low end torque may be a tad less. It really all depends on your driving style. If you like revs/shifting/running out gears, then I think the stage 3 will be alright. I assume drivability isn't as much of a concern since your C5 isn’t a DD. Overall, a less aggressive cam will be more well rounded and have a less top end biased power curve, but going to the stage 3 isn’t going to kill the experience. There are much more aggressive cams then the BTR stage 3 out there that people put into the C5s and wonder why they get surging and no power until 4K+ rpm. But dude, the idle chop is sick...
I say stick with the stage 3 since you’ve already purchased it.
All of the above is my humble opinion. Good luck with the decision!
I say stick with the stage 3 since you’ve already purchased it.All of the above is my humble opinion. Good luck with the decision!
Drifting
Joined: Feb 2001
Posts: 1,768
Likes: 297
From: Plano TX
Last edited by bigsapper; Jun 3, 2019 at 07:50 PM.
Thread Starter
Drifting
Joined: Aug 2014
Posts: 1,630
Likes: 181
From: North pole
So im staying with the stage 3 cam.. as far as the intake fast 90 upgraded t/b, dont give much in hp?..if i can use my stock intake and t/b that would be great...my other question is is there a big difference in stage 1 porting vs stage 2 porting tea will be doing the porting..a good valve job and i would like to give special attention to the exhaust valve area..also if i mill the heads 59cc alittle higher compression will give me alittle more torque down low?.. thanks
Burning Brakes
Joined: Dec 2017
Posts: 755
Likes: 272
So im staying with the stage 3 cam.. as far as the intake fast 90 upgraded t/b, dont give much in hp?..if i can use my stock intake and t/b that would be great...my other question is is there a big difference in stage 1 porting vs stage 2 porting tea will be doing the porting..a good valve job and i would like to give special attention to the exhaust valve area..also if i mill the heads 59cc alittle higher compression will give me alittle more torque down low?.. thanks
Since you already have the LS6 intake/TB, you would be "okay" not swapping the setup out for a FAST, but you'll definitely leave power on the table.
Last edited by wscott62893; Jun 4, 2019 at 06:31 AM.
Thread Starter
Drifting
Joined: Aug 2014
Posts: 1,630
Likes: 181
From: North pole
All of what you mentioned will only help the final result. A FAST 90/LS2 TB will make a big difference in final HP/TQ results if you're modifying the rest of the top end. Especially if you get your heads ported and milled for higher compression. I'd guess 25-30hp over the stock intake. The only time a FAST may not be worth the added cost is if you keep the stock heads (unported). I highly recommend going with the FAST. The more you allow your motor to breath, the better it will respond to the larger cam.
Since you already have the LS6 intake/TB, you would be "okay" not swapping the setup out for a FAST, but you'll definitely leave power on the table.
Since you already have the LS6 intake/TB, you would be "okay" not swapping the setup out for a FAST, but you'll definitely leave power on the table.
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Burning Brakes
Joined: Dec 2017
Posts: 755
Likes: 272
Injectors, something in the 36-42lbs range would be sufficient. I’ve heard good things about the FAST 36lbs injectors considering the price. Those are what I plan to run with my top end setup. Otherwise you can spend a good bit more on higher end brands. Keep in mind, most injectors sizes are rated for a lower fuel rail pressure then what the c5 runs (56-60psi). So a 36lbs FAST injector actually equites to something like a 42lbs injector when installed on a C5. Some guys may recommend the Ford red top injectors as well. Personally, I’m not a fan of piecing things together like that. But that’s my opinion. You have a lot of options when it comes to injectors. Just be sure to get something in the 36-42 size range and you’ll be good to go.
Intermediate
Joined: Feb 2019
Posts: 28
Likes: 4
From: NW Burbs
If you’re on a tight budget, you can always forego the FAST setup. It certainly isn’t cheap and like I said, the LS6 intake isn’t awful. If you had the LS1, that’d be a different story. You’d be foolish to retain that while modifying everything else.
Injectors, something in the 36-42lbs range would be sufficient. I’ve heard good things about the FAST 36lbs injectors considering the price. Those are what I plan to run with my top end setup. Otherwise you can spend a good bit more on higher end brands. Keep in mind, most injectors sizes are rated for a lower fuel rail pressure then what the c5 runs (56-60psi). So a 36lbs FAST injector actually equites to something like a 42lbs injector when installed on a C5. Some guys may recommend the Ford red top injectors as well. Personally, I’m not a fan of piecing things together like that. But that’s my opinion. You have a lot of options when it comes to injectors. Just be sure to get something in the 36-42 size range and you’ll be good to go.
Injectors, something in the 36-42lbs range would be sufficient. I’ve heard good things about the FAST 36lbs injectors considering the price. Those are what I plan to run with my top end setup. Otherwise you can spend a good bit more on higher end brands. Keep in mind, most injectors sizes are rated for a lower fuel rail pressure then what the c5 runs (56-60psi). So a 36lbs FAST injector actually equites to something like a 42lbs injector when installed on a C5. Some guys may recommend the Ford red top injectors as well. Personally, I’m not a fan of piecing things together like that. But that’s my opinion. You have a lot of options when it comes to injectors. Just be sure to get something in the 36-42 size range and you’ll be good to go.
Last edited by balbosky01; Jun 4, 2019 at 07:47 AM.
