I have a 91 camaro RS 5.0 tbi 5 spd. so far i put some headman headers true dual 2.5in exaust with glass packs, and ac and smog pump bypass. I was wondering what were some more cheap things I could add to this to get some more power before doing my swap to 350. i was thinking of grabbing a 454 tbi unit off a truck if i can find one in a parts yard. other than a chip i didnt know what else to do. any ideas?

 

forgot to say everything i am buying i want to bolt on to 350 also for when i do my swap!

 

The "Free TBI Mods", open element air cleaner and maybe install a LT1 cam - but the LT1 cam won't do you any good on the 350.

 

well i have the open air also, I was thinking getting the gm zz4 intake and a 454 tbi and leaving it at that i know thats probably too much top end for the lil low end i have with not doing anything to the heads but I just want a lil more till i get my 350.

 

Might get away with that - but too many mods and you'll need custom chip tuning.

 

i could probably pick a chip up also. any recomendations on a chip. Also is that a good intake to put on? if not more recomendations! thanks guys

 

how does your exhaust sound with the duals and the glasspacks?

 

personally i dont like it its quiet at idle at full throttle ull drownd out anything on the road and of course when you let off idle you get the nice pop that people like. I personally want something not as loud but more low pitched this seems to get pretty high pitched. Of course with a 305 i dont know how much lower you can get.

 

you can get them to sound pretty good. i am also swapping to a 350 but i was thinking for the 305 to get headers with straight pipes all the way back. i want a nice deep rumble.

 

do you have dual glasspacks?

 

they are just cheap 2.5 cherry bombs nothing special just something to get it breathing for now. its ran 3 inch off the headers then drops to 2.5 and cuts off right before the rear axel. Im sure if i got a better glass pack it would sound better.

 

Sorry - you can't just "pick one up" - that's why I said "custom chip tuning" instead of "new chip" - you'll have to program one, or have someone program one for you. The TBI chipsets are capable of "learning" to a small degree, but they are limited in what amount of mods they'll accept until it won't 'understand' any longer and then it'll just crap out on you, requiring a custom programming to adjust fuel tables, timing, etc. in order to run with the mods.

Everyone thinks they can throw anything at the car and it'll magically run - it's not the case - not without getting a laptop, and the software, and spending months learning the programming, and tuning the car differently on a daily basis until you get your mods tuned into a new chip. And then, when you add another mod, you start all over again.

This is why many of us swap to carb, and many others swap to TPI - carbs require no programming, and with TPI there are many more folks capable of programming chips for you - no one programs custom TBI chips (that's worth a hoot anyway).

 

Or, one could run the EBL or swap to the TBI MAF system and cut the tuning difficulty in half, in addition to doing away with "chips."

 

NM

 

how hard would it be to swap a 305 tbi to a tpi setup and roughly how much do u think it would cost(used parts)?and how much more power would u get out of it?

 

the guy at tbi parts will build you a chip depending on your upgrades. its 250 on ebay and like 350 with the recomended fuel pump

 

Just know that having someone else program a chip for you when they don't have the car is a slow process. They program a chip based on a guess, then you install it, collect data with a laptop in your car, send the data to programmer, they adjust and reprogram, you install updated chip, collect more data, so on, so on. So - when dealing with paying someone for chip programming ....

1) Don't deal with them if they are not going to continue adjusting until it's right - there's alot of them that charge a one-time fee, and you get one chip, and that's it - walk away from them - they should keep doing it until it's right.

2) It's not an overnight, pop a new chip in and be done process - know that! It could take weeks or months to get a chip programmed that the car runs decent on, and longer to get a really good tune.

This is why most folks either swap to carb, or learn to do the chips programming on their own, and spend the $300 in burners, programmers, etc. to do it.

It would be a lot of BS to go through just to swap in a 350 afterwards and have to start all over again. When dealing with chips, get the engine combo you want first, then go to the trouble of getting the programming - seems silly to spend alot of time and money programming chips for a motor that you're junking anyway - but whatever floats your boat.

I just want to make sure you understand, this isn't a plug and play 10 minute thing - getting custom chips programmed by a third party isn't something you do with your daily driver, unless you like riding the bus!

When I did mine, my car was out of commission for months trying to get chips programmed (and I was dealing with a local programmer), and in the end, the best I got was to get the car barely running again. Shortly afterwards, local inspection laws changed, and the car got swapped to carb so that it would run on the mods I did, and I sold it. It's better today (I tried mine 5 years ago), but it's no day in the park.

In the ***** world, chips are a dime a dozen - that's why they call them "tuners". With 3rd gen F bodies, this is technology way older than even the concept of 'tuning' - and it's not plug and play like today's technology.

 

add the 305 heads to the 350,after getting them ported and polished,will raise compression and give you some nice gains all around

 

Here are some public posts (you’ll have to cut through the opinionated and engine swap crap), but there is some good stuff in here. #1 rule, don’t get anything you can’t swap over to a 350 or 383 or sell later on. #2, Go cheap on the 305. Don’t put a $50 dollar saddle on a $20 horse is the common saying.
https://www.thirdgen.org/forums/tbi/626560-evaluate-305-tbi-build.html
https://www.thirdgen.org/forums/tbi/622480-just-want-200hp.html
https://www.thirdgen.org/forums/power-adder/622784-looking-get-high-power.html
And TGO Official posts. Ultimate TBI parts one and two, plus how to make a dual snorkel air cleaner.
https://www.thirdgen.org/ultimatetbi
https://www.thirdgen.org/ultimatetbi2
https://www.thirdgen.org/dualsnorkel

And these are my suggestions:

1. Open Air Element (Cleaner) or duel snorkel air cleaner
2. New headers back exhaust system
3. TBI Computer Chip
4. 180* Thermostat swap
5. Nitto NT555 tires or similar tire
6. Edelbrock performer rpm intake manifold
7. 3.42 10 bolt Rear End
8. Corvette Shift Kit (if you have an auto)
9. Ultimate TBI mods
10. Wider Aftermarket Rims (like 17X10 in the rear and 17X8 up front)

And if you want to go big:
1. Heads
2. Camshaft
Hope this helps man!
-SKELITOR

 

from the list you provided, this is what i have so far:
1. the open element
2. headers back exhaust (flowtech headers to axle cut 2.5 full dual exhaust with h pipe before glassplacks (no cat))
3. FULL ac && FULL smog delete
4. 18x8 aftermarket wheels with zr tires
5. 180* thermo

is there a cam and intake combo that would also be good on my 350 when i swap it? i too am looking for transfer parts. not really thinking 305 heads too much cause, like i said, im going 350. the edelbrock performer rpm seems to be popular.

 

Yah. Everyone is pretty much unanumous as far as the edelbrock Performer rpm goes. It's the one to get. As far as the heads and camshaft combo, I believe those subjects were brought up in the thread links posted obove. I'm not the right guy to ask cause I haven't and won't mess with those. Ask robertfrank. He's the LO3 305 TBI performance expert. He even has his own website dedicated to TBI performance.

 

well, why is the LT1 cam great in a 305 but no good in a 350? as stated in post#3

 

lt1 is a 350 so it wouldnt yeild much gain,if you put a lt1 cam in a 305 you see big gains,because 305s came with vary mild cams,and also the peanut cam.

 

for short dollars you get increased duration and lift vs the peanut cam.

As the saying goes, "one man's junk is another man's treasure"

So, an LT1 owner upgrades their cam and they can make $25-$30 off of it and they'll be happy. It's like getting free spark plugs.

 

Check out my buddys 305 silverado with headers,and straights. http://www.youtube.com/watch?v=xou_PoTgXhA

 

THANKS GUYS!!! THAT MAKES UBER SENSE AND HAS CLEARED THINGS UP!!! an LT1 cam is most def next on my list.

 

if memory serves you will need roller lifters,insted of solid or hydrolic,for lt1 cam.not 100% tho,also rollers will help open valves easier,which means less stress on engine,in term equals more power

 

oh geeze....so i cant just slap in a LT1 cam??....and so the plot thickens lol

 

throw roller lifters in,they free some power to so casnt go wrong with them

 

and they are a 350 bolt on as well?

 

no so much bolt on but thy fit.