86T/A_Ram_Air

Ok this is thinking a little bit out of the box considering how most people either go carburated or TPI. But to make a more budget friendly build overall I have settled on a TBI build thats a little.....well different

Here are my plans as itemized. Keep in mind at this point this is all I have as I am f-body less at this point.

87-92 TBI T-top f body
Body has to be decent, Paint condition no biggie, as long as its not yellow

PLAN
334 TBI using the factory rebuildable engine
Have 081 TPI heads I have laying around cleaned and opened up a little as well as port matching
Header back exhaust
T-56 swap (maybe. Might keep it a auto car)
Performance lower manifold with EGR provision
Holley Throttle Body/have factory TBI unit rebult/ported (maybe)
injectors
LT4 hot cam equivilant
LCA's
Panhard rod
Torque arm
Wander bar
Sub frame connectors
Eibach Springs
Struts and shocks
4 Wheel Disc rear, 3.42 gear

I think thats all right I got right now. I think I have more written down but I don't have the paper in front of me at the moment. Thoughts? Comments? Call me crazy but I think it would be a good fit and I'm 99% sure I am going to build it

UnderCover89TBI

iTrader: (25)

You left off what computer your going to run it with. You dont really need 454 injectors. what kind of horsepower are you expecting or wanting? I think it is a mistake using stock heads. do you have emissions testing where you are at? and do you have to have egr?

DeathStarr89

iTrader: (1)

Nothing wrong with TBI as long as you put good heads and a good intake under it.

86T/A_Ram_Air

I will have to have a custom chip burned, most likely to reuse the factory one if I can. Im hope to be making about 280-300. Yes I have emissions testing so that would be the reason for keeping the EGR. The stock head castings are ok, but i would have them opened up and maybe stuff them with bigger valves, I realize I left the valves part off

Ronny

iTrader: (1)

Will larger valves fit the stock head?

what does that cost? Anyone?

UnderCover89TBI

iTrader: (25)

precisely....Thier are emission legal heads you can run. I know with 2.02 intake valves the 305 bore will shroud the valves some. But with it bored over some. as long as you dont go over a certain valve lift it should be okay. I think edelbrock said keep it around .480 lift and the wall wont shroud the vlaves as much.

DeathStarr89

iTrader: (1)

What about using some Vortec heads?

UnderCover89TBI

iTrader: (25)

you have to externally plumb the egr and depending on the state's smog laws could make it not pass a visual test

86T/A_Ram_Air

well change of plans. a real 327 build isn't going to happen with a 305 block. I cannot bore it that much, but eagle makes a 334 rotating assembly that uses a 0.030 over piston. so i am thinking doing that with a set of LB9 081 heads I have laying around. that should be better than the stock TBI swirlports. and the manifold should bolt right on there and keep the stock emissions system with a set of hooker headers w/A.I.R.

DeathStarr89

iTrader: (1)

aah, ok. That makes sense.

thomas1976

That certainly should be a fun engine.
If the 081 fail, TFS 175's could be a nice alternative.

86T/A_Ram_Air

I have a very tight budget right now, and it really doesn't matter how you slice it machine work on a set of heads is cheaper than new heads. could I do a 350 swap on a smaller budget....yes....would it be something you don't see all the time...no. and thats what I want to achieve here. no one builds 305s up, but I am crazy enough to do it

backgammon7

Have you thought about destroking a 350? That might solve some of your valve size issues. What about a Z28 302 cam?
A destroked 350 isn't a 350

UnderCover89TBI

iTrader: (25)

another typical 305 build up thread now who doesnt wanna upgrade the most important part of making power the cylidner heads

86T/A_Ram_Air

Am I buying aftermarket heads....no. I will be using LB9 TPI heads and have them ported and bigger valves installed....how is that not upgrading the heads?

backgammon7

Because on this board theyre predominately two kinds of people, people who want free power, and people who want to pay someone to do the work for them. The people that have the money to pay someone else can't distinguish between someone on a budget and a cheap ***. The stock heads are gonna be your limiting factor, even when modified. However, that spent mean they can't be made to suit your needs.

86T/A_Ram_Air

not looking to make a ton of power here. just looking for it to be fun. I am aware that i can make more power with different heads.

schlegel94

how do you post a thread ive benn trying for an hour just started my account

86T/A_Ram_Air

Click on the "New Thread" icon

schlegel94

were is it at i went to faqs and it said that i cant find it tho

SCCAjunkie

Check out my other thread, as is sounds like we have similar goals and potential setups.

If you haven't yet bought the car, I'd recommend buying a 305 TPI car, then sell the TPI and buy the Holley setup. Use the Holley controller for a bit if you want to, then upgrade to a custom controller... Heck, since you're doing a T56 swap anyway, why worry about if the car is stick or auto?

If you want help on the headwork, hit me up.

backgammon7

Go back to the list of threads. Go to the top of the column and look to the left. There is a new thread button. Click that and from then it functions pretty much like a reply, but it is the first post.

Just out of curiosity, why would he want to use the Holley unit? It's my understanding that the great majority of the aftermarket fuel injection setups pale in comparison to the factory systems, even though they are by today's standards archaic? Wouldn't it be a better value to upgrade the factory system and then learn to tune it? If I am wrong correct me, just trying to learn.

SCCAjunkie

It's just my thoughts, since you can find the Holley unit and controller very cheaply. Perhaps it would be better to start with the factory TBI system and wiring, but I'm personally more inclined to wire my own, no matter what.

I like the 5 **** "carb thought process" setup on the Holley standalone unit before trying to attack 2D and 3D tables. I did it the opposite way myself- starting with a standalone Electromotive that I had to create my own tables from scratch for an unknown engine setup (FSAE), then went to a 1990 TPI setup and burned chips, and have now regressed to the Holley standalone, 5-**** controller. I wish I had the opportunity to go back on do it over...

Ron_90

Can't believe no one has linked him to this thread yet http://www.google.com/url?sa=t&rct=j...nLXcP1CChfctQg

...and that's how you make serious power with a set of stock heads

backgammon7

"The only 305 heads you MUST avoid are any that come on a TBI engine--they have insurmountable casting flaws"

Hmmm.....




I just want to say that I really like the concept of this build.

UnderCover89TBI

iTrader: (25)

Yeah only reason I have aluminum heads is because I bought them used off of craigslist for 350 dollars...so I cannot hate for it.

86T/A_Ram_Air

Updated first post to reflect some changes in the plan.

here is a link to to pictures of the car i just picked up as a starting point: https://www.thirdgen.org/forums/memb...w-project.html

Ron_90

Just port the factory TBI, don't bother with a unit from Holley. The one you have now flows about 420 cfm. Take a dremel tool to the bore ridges on top, work the bores and shave throttle shafts- you'll be up to over 600 cfm. That's more than enough to support a 334

86T/A_Ram_Air

I was thinking about boreing the stock TBI but I wasn't sure how much air would flor through it but 600 CFM is more than enough, I will be going that route then.

86T/A_Ram_Air

Got some done on it today. first order of business was to get it in the garage, that was a workout let me tell ya. Then I got the hood off of it to make things a little easier. that hood will not be going back on the car. Ill be picking up a standard cowl hood at some point. then since the hood cable was stretched like no tomorrow and I had to unbolt the hood latch to get under the hood to begin with I pulled that out. and since the dash pad was so messed up and ill be getting another good one I pulled that too. so all in all a fairly productive day. I would have got the car up in the air but my floor jack decided that today was going to be the day it would leak all the fluid out so time for a new jack