Hi i am building up l98 block for my camaro and i am wanting to know what do i need to make a tbi run low 13's or should i just swap to somethong else. Im also in a budget so no power adders for me for now.

 

An L98 is a TPI not a TBI.

What do you have? L98 or TBI?

 

Money, which is something you dont have.


If you cant afford some 150 dollar headers, you cant afford to make your car run bottom 13s.

 

Right now i have a l03 but i have a l98 engine im building up for when the 305 gives up

 

Are you gonna be going on all my threads man i aint going to say nothing back, also this is a long process build for me not something right away i already got $500 right now by selling some wheels from my other car but not interested in your headers anymore thats why i am already gonna purchase some this weekend locally.

 

Nope, quite frankly i dont care at all..*edit* since you added more as well, like i said, i do not care..and im sorry if you cannot handle the cold hard truth..you not buying my headers that you have bugged me about for 4 months doesnt phase me lol, i dont need the $$, and like i told you, id burn them before id sell for what you offered.

But, all of this information you ask/need/want is available in search...

And, i was being brutally honest, if you cant afford a set of headers, you cannot afford to go that fast.

 

So you have a 350 long block? Is that it? you want to reuse your existing TB parts? Intake, ecu, TB on top of that long block? What makes an L98 an L98 is the intake.

Which heads? Aluminum or cast?

You'll need 325-350HP. You'll need 110 lb injectors, which we just happen to be the only company in the world that makes them...

You'll need to modify your intake some.

 

Well i am only 18 so i still have time i am only getting paid minimum wage but studying to be a engineer so i think i will be able to go fast one day but gonna improve little by little.

 

i say a 434 with 14:1 compression, big ole comp solid roller, around 270* duration at .050, dual dominator style throttle bodys, big ole AFR 230's...


shoudl run 13s, with ease, it always better to have more then you need right?

 

save your cash, keep your car stock, finish schooling, get engineering career started...


THEN build car.

 

Oh ok then so i have a 350 block since i sold the intake, and they are cast heads, and i prefer using my tbi and stuff but if i have to swap i will to reach my goals.

 

Can someone tell me if these TBI Intakes will support 350HP? the stock one he has anyway..

 

Now that sounds like solid advice.

 

The reason i am wanting a low 13's car is because this is my hobby and i will later on build my car with a ls6 which is my dream to have on it and maybe with a turbo not sure but for now wanting something to be fun.

 

probably not with out a ton of work, and even then probably not, first thing to be swapped on a TBI is heads(atleast ported) and the Intake, ive looked over your website and just "Liked" your page on facebook, if you are every looking for thirdgen f-body product testers i have an L03 RS

oh and to JR350, yes you can have a Low 13 second 350 TBI, even a 305 TBI can get there, its gonna take a lot of work, and a good amount of money to get there, start looking into the LT1 cam swap, and Tuning, thats where im at right now

its going to take head work(or swap), new intake, cam, full exhaust,Rear gears(and posi), good tune,smog delete, and deleting all the comfort features if they are still equipped, shedding weight will help some too

 

This has nothing to do with making more hp.

 

im guessing you have a L98 long block!? if you have the heads thats great those TBI heads are barely good enough for your 305 as is, start with a good Hydraulic roller cam thats comp compatible, LT1, LT4, zz4, LT4 hot cam or aftermarket grind, all those cams i listed will work with the computer though not without a tune, then either get the stock heads ported and rebuilt with bigger valves and better springs(waste of time imo) or get a better set of heads... then youll need a better intake manifold, im sure edelbrock makes them, ive even heard of ppl using carb manifolds and modding them to work with the tbi ill ask a member who i know is doing that to contact you about it... theres nothing wrong with doing research before your build, do not let anyone discourage you... learn as much as you can before you buy your first part, and you wont make any mistakes or waste any money... youll need a bigger tbi and you CAN use the tbi from a truck 350 tbi but if you dont pay like 25$ or next to nothing for it dont bother... is your car a auto or stick??? posi?? rear gear ratio? tire size?? start with that stuff and do the research... dont be afraid to ask questions SOMEONE will help youbut as far as bugging someone about headers for months and not buying them... dont do that lol anyway good luck and i hope this helps, search the forums i know it seems like itll take forever to sort through all the junk when you search but dont get discouraged, im just happy that there are still guys your age who are into thirdgens, most of the kids around me drive hondas oh yeah if you wanna just swap in the L98 long block as is then do that and go from there the first mod to a 305 should be a 350 lol YOU WILL NEED A CUSTOM TUNE i got no recomendations on where to get the tune how much itll cost etc but im sure ppl on here do it and can tell you where to get it done or how to do it yourself, keep saving your money and dont buy the first thing that pops up... been there done that and dont wanna make that mistake again... if you want a cheap upgrade for your 305 i got a 97 LT1 cam for sale $55 shipped already ahs the dowel cut to fit check these threads out for a little more info https://www.thirdgen.org/forums/tbi/...-ultimate.html https://www.thirdgen.org/forums/tbi/...-350-swap.html https://www.thirdgen.org/forums/tbi/...mods-info.html thats a good start good luck

 

If you have a 350 TPI long block then you have a good base for a 13 second car.

You can use a carb intake with a TBI on it with a base adapter.

There's a couple aftermarket TBI intakes out there most people just use carb intakes though.

 

removing your smog pump definitely gains HP the same as using underdrive pullies, less stress on the motor frees up HP, i know there is more to the smog system, but getting rid of the pump definitely helps

 

Ok thanks and yea i learned the hard way too i would alsi get mad for what i did, as for the lt1 cam would that be a goo upgrade for my 350

 

This is not TBI related but he did say faster. I suggest A Eaton posi and at least 3.42s and a support cover if your going to keep the 10 bolt.

 

305 and 350 TB's have the same size bores. Though the BBC TB has bigger bores.


Removing a working air pump will not make any difference, would be lucky to see a 2 fwhp difference.

I don't care if the air pump is removed or not on a street car, but it can certainly not be considered as a performance mod.

 

Whatever you say, I'm just tellin him smog delete is a common thing to do as it really is not needed, and will free up some hp, especially removing the pump and cat,

I'm not telling him taking a mostly stock l03 or l98 and removing smog will give him 1000 hp, I never even said it would give him 5 hp, but smog delete with everything else I mentioned will help him get there 2fwhp or not

 

yes the lt1 cam is an upgrade from your l98 cam 410/420 lift vs 447/459 lift its also a popular upgrade for your 305

 

it'll def make a big difference in pickup, esp if you're running the stock 2.73's!

 

From what i think its stock but not sure how can i check

 

its most likely stock

 

two words... Weight reduction

 

To get ready for that 350 you should do your exhaust first from the headers back. Look for a used pair with y pipe & 3" catback.

 

Just slaps some 3.73 gears in there and a 150shot of N20 and see what that gets you on the stock 305tbi.

 

Too add nitrous on my tbi what would i need to buy since i only see kit for tpi.

 

here's a TBI specific N2O kit

http://www.jegs.com/i/Barry+Grant/132/13045/10002/-1

you could probably get it cheaper if you could find it used, or buy just a plate and pick the bottle and lines up used.

here's just the plate.

http://www.jegs.com/i/Barry+Grant/132/17051/10002/-1

 

yeah i vote buy the plate and piece the rest together used

 

I will try to complete that kit after i paint my car since right now thats were my money is going towards then give living hell to the L03 with nitrous until it blows, and then swap the 350 that would be the best or what do you guys think since im no pro.

 

I've seen 305's take alot of abuse and keep on ticking, you'll be surprised on what you can throw at it and what it'll live through. Gears and the N2O will wake it up for sure, just do yourself a favor, and when you drop a 350 in, make sure you don't have swirl ports, they're for tow rigs, not cars.

 

If the 305 holds a while i will save up for some afr or if not i will go with some tpi heads or vortecs since my 350 already has the tpi heads.