I plan on converting my 305 tbi to tpi, like i have always wanted. The setup I'm probably going to buy is from a 350. Its a MAF setup. I know I need a Knock Sensor for a 305 but I can't find anywhere in any search if the injectors will be ok..I don't have the equipment to tune it yet, but I hear MAF usually does pretty good with adjusting itself. So will these injectors work, and is there anything else I need to know?
Thanks

 

Too much fuel boss, itll be rich unless you get it tuned to compensate.
Even then, a stock 305 wont burn that much gas. Upgrading the engine to
use that fuel, and then tune it is logical.

So wait, your just getting the TPI setup/harness and whatnot?

What about heads and cam?

 

i have accel 22s in my 305 engine im not a big fan currently....... definitly does run rich. Been like that since i bought it.

it'll waste some mpgs ,but mine still does run like a ravaged beast.

you need 19lb hour injectors to be correct.

so in a sense yes they work.
are they correct no
are they optimal no....
if you plan to use an adjustable regulator you should be fine though imo.

im down to 40psi on mine and i still runa little rich but we will see.

 

Yes tpi, harness, ecu out of an 87 i believe. This is the first step.. I plan on getting edelbrocks aluminum heads and I don't know what cam yet..maybe jus lt1 but i was going to get advice for that later.

I thought I pretty much had to change the pump and regulator (theres a thread on how to make your own, I was going that route) going from tbi to tpi.. didn't think the one from tbi was enough

 

Ok cool, at first I thought you were going to try to run the TBI
valvetrain/heads with tuned port, which is more hassle than its worth.

But yea, flame mentioned it first, 19lb/hour injectors are the
correct size. But hell, if your going with aluminum heads, and a
fairly hot cam, your going to have to get that thing on a computer
monitor eventually.

At this point, the 305 isnt so stock anymore, it should gargle the juice!

Id want the 22 pounders in there if I had a aluminum headed, hot
cammed 305.. why wouldnt you wanna get something like that tuned?

Prolly run nice!

MAF cars are tolerant to an extent, but only with subtle changes.
When you start messing with the whole basket, you gotta tell
the ECM what is going on under there.

And yes, you have to get a 45psi rated fuel pump for the tuned ports.
I remember NAPA gave me the 18psi or whatever TBI one after I dropped
my tank and installed it.

Car hardly idled, it popped and spit like crazy.

 

I do plan on tuning it thats why I went with tpi instead of carb.

 

Well you know what I meant, until you have the ability to do so.

I didnt do mine personally, had a good shop that specialize in TPI/LT1/LSX.
Car was gone for about 3 or 4 days, but I was happy when I got her back!

 

So lets make a quick recap. I am getting the whole tpi setup from 350. Since I am going to mod the 305, the injectors would benefit me. So really all I need to change is the knock sensor.. fuel pump (45 psi) and adjustable regulator. does all of this sound right? since we were talking about cams earlier any preferences? I jus say LT1 cus they are easy to get and cheap. I have read somewhere with these heads that .450 is about the max lift I can have.

 

Which heads you talking about? not the TBI heads right!?

The injectors could benefit you, just not instantly persay. But yes,
a 350 knock sensor needed, along with the 5.7L 350 rated 45+ psi pump.
Not so sure about a AFPR.. you could save a few bucks, a normal OEM TPI
reg would suffice!

 

The Edelbrock 60859 Heads. and you mean 305 knock sensor right? all of this is going on a 305

 

Whoops excuse me yes, I was backwards for a bit. Gotta link
to those heads? Im unfamilar with the edelbrock line up.

I think, not positive that there is a difference between the l98
fuel pumps and the LB9's.. When I did my pump swap, there was
two different part numbers..

Unless NAPA was just obsessive compulsive, lol

 

Sorry, Just a tad off-topic... Who did your tuning? AZTPI, by chance?

 

Actually not those fellas, a buddy of mine had the ability, used to
work at C'N"V Vettes in Tempe. Though I did recruit AZTPI to track
down a code 33 problem that frustrated me to all hell, a few months back!
Friendly guys over there.

You one of em?

 

That's where I saw the cam max has to be below .450
https://www.thirdgen.org/forums/afte...ads-305-a.html

And here are the specs.
http://store.summitracing.com/partde...5&autoview=sku

 

No, but they are great guys and really helpful. I'm getting my accel DFI thruster setup there. For dyno-tuning and my LSX stuff I go to speedsports in gilbert.

 

Joe and Leighton are the some of the best service dudes
and info guys. Everytime Ive went up there, I get stuck in
conversation with them.

Ive had nothing but a positive experience with those guys.

Whatever the general consensus is on your heads, Im sure theyll
work out fine. My first thought was the .450 lift was kinda meager
on aftermarket heads, but I dont know too much and everything, haha!

He is very smart, so I am going to have to agree!!

 

Those Edelbrock 60859 heads are for a 350, not a 305. The bore on a 305 is too small for them. Make another choice.

 

Yeah, I would ditch the 305 anyways.

 

Well I really want some aluminum heads and all I can find are ones for a 350, but many people I have read about with a 305 have milled 350 heads and/or used a thin gasket. Another more affordable one is the 350 aluminum vortecs. any reason not to? Any other aluminum heads I can use that arent $$$?