I have a chance to pick up a LT1 cam from a 96 (I think) Camaro....I talked to Brian at TBI chips, about using this, and he said I should try to get a set of injectors from a 350 TBI truck (I have the numbers at work), and use those in place of the stock 305 injectors that I am runnig now....Of course the chip will be redone....Regarding the injectors, does this sound like sound advise??? If not, why not???? Is this the right way to go??? Talking only the injectors, dont want to get in to the burn your own chip thing...Thank you very much for any insight on this....I did a search, but didnt see what I was looking for...Also, is the 96 Fbody cam a fairly good one..Tom

 

You can just increase the fuel pressure and support up to 300HP with the stock 305 injectors. The 350 injectors aren't all that much bigger. I wouldn't wast my time. As you said you will have to compensate in the chip. If you haven't already you need to upgrade the stock fuel pump as it barely supports the stock HP level.

I know you don't want to hear it, but it's the honest truth. You are wasting your time and money with Brian. Even if he has tuned an LT1 cam'ed LO3 in hand, it doesn't mean that tune will run your car very well. Having him guess as to what the motor will want with the new cam is just a bad idea.

 

monte, as you know i will be running basically this same internal set up and since i have not yet burned, or purchased burning equipment, would it be a good choice to have someone make me a custom chip for my later set up and then tune from there? i beleive your correct when you say having someone just "make" you a custom chip is a bad permanent idea, but i would also have to say that sounds like a good starting point...no? the car should atleast run "OK" on the custom chip

 

Nope still a bad idea,

add timing at WOT only
richen up WOT mixture
turn off EGR
turn off speed limiter
adjust injector constant if needed


There you go you have the recipe for a TBIchips.com chip. Please, don't take my word for it, do your research and see for yourself. I'm not out to make a profit by steering you away from his chips, I'm just trying to save you money. I understand this is hard to understand if you have never done it, but Brian banks on people thinking chip tuning is black magic and that he changes hundreds of parameters based off of your mod list. In reality it is IMPOSSIBLE to do this and do anything other than make the car run worse. He makes VERY basic chanes that you can net with a timing light and fuel pressure regulator.

If Brian thought he was as good as his chip prices indicate he could become a forum sponsor and join the discussion here. The truth is he isn't, and he chooses to lurk in the back ground and soak up the FREE knowledge on the boards and make a profit off of it. I'm not saying that using free knowledge to tune a car is immoral buisness practice, I often tune cars for guys locally for a modest price, I'm saying that selling mail order tunes is immorall because it just doesn't work. The guys I help out don't even have an e-mail address, they simply want to pay some one to tune their car.

 

i know theres alot more to tuning then that but thats the basics huh? and to get this at WOT you have to be data logging right? you cant just start "uping" this stuff and expect it to work good since you said turn off egr and no way to do that without a burner right? i would LOVE for someone to let me pay them tune my car as i learn. im a see it learn it do it guy, not read it try it **** it up once or twice try again. its gonna be harder for me then you may think because of some learing disabilities i have established from an accident. dont take that statement for granted..im not a retard! it just takes me a while. and under the hood im excellent. So...DONT go to this Brian guy at tbi chips?? ok i got that. what about these guys that are sayin they got the chip from him and it works great? is that because of the minor's he chnges?

 

Basically you log to see whats going on, then burn the chip with desired changes, then log again to see how it effected the enge then repeat 100-200 times untill perfected.

No way to turn off EGR without changing it in the chip. You can uplug it, but the ECM will still expect it to be working and will screw with your fueling and timing as both are changed when the ECM camands the EGR on.

It's called the placebo effect, no one wants to spend 200$ and not see a significant improvement in performance. You'll be very hard pressed to find anyone that has done a cam swap and liked how Brian tuned their chip. Also a lot of guys just don't realize how good it could be with proper tuning. With nothing to compare it to it's hard to say it's junk. I have something to compare it to so I know that what he does barely scratches the surface of what needs to be done on a highly modified car.

 

that was a great explaination of why not to check out tbichips. im gonna buy a cam off this site its an lt1 and the guy said it was out of a cop caprice so it was a little more agressive than the basic lt1 cam. will this still work just fine in my lo3? and i heard that the cop cruisers came with a more mild cam then the basic lt1's???

 

Well that does it, I know how to tune a carb..........Time to dump this TBI....It seems to me, that what works for one motor, should work for a similar motor...I know there are small differences in even the same motors, but it ought to be close.So with that said, if you know how to tune a LT1 LO3 motor, should'nt it be about the same???? If not, why not????? So I would be glad to pay someone that has a LT1 LO3 with mods similar to mine....I mean almost all of us are doing the same things to these cars...3 inch exhaust. either short, or long headers, free breathing filter, upgraded ignition, LT1 cam............Please comment, thanks, Tom

BTW, I paid 100 dollars for my stage 2 chip....According to my butt dyno, there was a positive difference in the way the motor runs...Will this added timing, and fuel support a LT1 cam?????

 

if i were you i would stick with that tbi. cam ignition and good lungs on an lo3 almost NEEDS the tbi in order to run to its maximum. sure ure...putting on that carb, alittle twisting and turning and you have a decent running car, stomp the throttle car dies, gotta wait for fuel to evap, inorder to start and try again. tbi, stomp the throttle....WEEEEEEEEE.....if you TUNE it right.

 

Well, Carbs have been around for a long time...I never really had to many problems with them..Ran one on my 11 second N/A motor....I want to stick with the TBI, but the tuning thing is beyond me for the time being...Anyway thanks for the input......Tom

 

LT1 cam and what heads? Too many poeple, IMO, make the mistake of slapping a cam in and not matching it to the cylinder head flow they have. Very important. Read some articcles by David Vizard on Cam selection. It may not be a "bad choice" but is it the "best choice". That's the issue.

 

Huh? What are you talking about? A carb will do just fine running a car if it's tuned.

 

he said he doesnt want to tune.......

 

No, I said I know how to tune a carb.....I can read plugs, and change jets, power valves, adjust pump shot...Have had some pretty crisp running carbed motors in the past....Would just like to find someone local to help with the tuning..Thanks, Tom

 

ya really gotta be specific huh. im sure you ment that you dont want to go through the hassle with tbi tuning. YES its easier to tun a carb because its mostly mechanical. sorry for the what ever the fu** happened here wasnt trying to add fuel to fire.

 

Man, I just want to get the car running good with the least amount of hassle...From what I read there is not alot that the TBI will do that a carb wont....The last thirdgen i had had a 350 carbed motor ran low 14's with a 2.73 open rear, and got as good of milage as my present car....dont get me wrong it was cammed, and intaked, and headered, and ignitioned..lol....Oh yeah, and convertered, and shiftkited.....

Oh well I will get it all figured out.Thanks for all the answers...You guys are the best, and agree, or not I respect all opinions......Tom

 

your right there isnt ALOT the tbi offers over the carb except for closer perfection. you know that a carb is mechanical and tbi is electrical, and tuning a tbi is much more time consuming and less dirty (some of us like getting dirty) than tuning a carb. im a tbi head so sorry for the harsh input lol. BTW that was alot of "ed's"---> cammed headered<----lol

 

this guy gave you mis-infomation about the cam you are about to buy!
it is not more aggressive at all,it is designed for a heavy car (4000lbs)the lobe center is tighter and it has a little less duration,use an f-body cam.it will pull hard all the way whereas the b-body cam will pull hard then taper-off a bit,that is the real deal.

 

so the better choice would be to buy a cop car cam? O SHI* i just grabbed a z28 cam

 

you are good with the z28 cam.best choice in my book.my favorite is the LT4 cam,not the hot cam.Lt4 cam has roughly the same specs but it is on a 114 lobe center instead of the Lt1 117.5

 

im still learning about cams and what not..read every sticky on here and had m dad explain all the stuff to me atleast 2 times. i hope my cam comes soon even though i cant swap until i get an intake carb vac advanced distributor and different fuel system cuz im swappin tbi to carb.

 

Do you guys think my LO3 valve springs will be up to the job??? I need to use them for a little while, at least until I get a new set of heads, or have these redone....
BTW, that was alot of ed's was'nt it...lol.....I just gotta quite being lazy, and get all my goodies on the car...Sure seemed easier when I was younger.....Thanks everybody for the input...I love Thirdgen.org....You guys always have the answers, even if I dont like them sometimes....Tom

 

valve springs are a must they really arent that expensive i saw a set for 35$ on the for sale forum