Spectre

Hi, im gonna buy that mainfold (prof product) next week..
I see they have nitrous bosses.. can I have those drilled
for fuel injection?

Im assuming I can drill the bosses.. put fittings.. get good injectors..fuel rails.. then put an LS1 throttle body on top..
or something similar.

The program running it all.. thats uncharted territory for me..

Does my project sound realistic?

Would this setup have any real advantages over a good carb ?

Thx for ur responces

LnealZ28

I've been contemplating something similar. Here are some interesting links:

https://www.thirdgen.org/techbb2/sho...hreadid=210448

https://www.thirdgen.org/techbb2/sho...hreadid=210366

Grumpy

A carb manifold is designed to be wet flow, so the runners tend to be a lil large for port EFI. So you can be a little conservative on sizing. If you can lay the injectors over a little to get them sort of pointing at the intake valve so much the better.

WOT there isn't much difference between the two, but at any other throttle opening EFI wins. EFI is much more civilized when done correctly.

Spectre

I see .. sounds complicated.. but ehh.. ill look into it.

thx for the info

biohzrd

are you talking about the single plane style intake or the dual plane style similar to the performer rpm intake? if its the dual plane style you may run into a problem with the height differance from runner to runner not being the same were as on the single plane they would be the same. just an observation

11sORbust

yes it would work. You'll just need to make a plunum. The plus side is the plunum will also serve as a TB adapter

87_TA

You do not need to make a plenum, many guys have been running a 4brl style throttle body with great results.
I picked up a 1000 cfm squarebore off e-bay new, just been waiting for edlebrock to release the victor EFI Intake.
If I find the pick ill post it.

87_TA

here it is

11sORbust

me like(drooling smillie here)

87_TA

Mee too,
Ive been sitting on for about a year - since i'm still making gains I don't wanna change things yet.

Zac's92

Victor EFI, like mine?
http://68.6.75.201:8081/~photos/albuo07?page=2



Zac

LnealZ28

That's cool. How much for the intake and where do I get it?!!

Zac's92

Edelbrock part #
29785 for the maifold
3630 for the rails
Notice the "sample" cast into the bottom of the manifold. I got mine quite awhile ago through my distributor. Summit and Jegs should have them now.


Zac

87_TA

LOL,
Yeah I think that is pretty close to what I was refering to.
Thanks for PN.

Spectre

very nice indeed

LnealZ28

They have them at Summit, I just found them at their site, put an "EDL-" prefix ahead of the part # in the search box. They're not in the catalog though.

$306.39 for the manifold
$78.99 for the rails

***wipes drool off keyboard***

11sORbust

I'm going to buy one. Not for my 406. I'll use it on a 383 for my beater.

87CIZ

iTrader: (8)

i think i found a throttle body like that similiar on ebay. how much did you give for it and does it have progressive linkage? also hey has anyone drilled out the nitrous bosses and put injectors and fuel rails in? I would really like to do this but i need some confidence before i put my new vortec air gap through this

Kingtal0n

thats cheaper than a stealthram.. and would probably work just as good. only thing is you can use the stock TB...

biggtime

I made one for my Typhoon as I am converting it to vortec heads. did not finish the engine yet but it flows like a monster on the flow bench.

87CIZ

iTrader: (8)

still saving for my manifold and various other things im gonna buy them all at once to save on shipping i just need to find someone that can weld in the injector bungs so i can put the injectors in and figure out how to mount my fuel rails.

SBNova

I am going to start making my own EFI from my current Victor Jr intake. I bought some aluminum stock to mill some injector bungs from (its nice having access to a metal lathe) and weld them on myself.
One question about that aftermarket throttle body- Does it have provisions for a GM TPS and IAC ????

11sORbust

87_t/a, you need to sell me that TB. It's been sitting soo long the butterflys are going to stick

biggtime

You don't have to use a throttlebody that looks like a carb. You can buy/make a elbow and then use a regular TB. I used a ls-1 on mytyphoon on my intake.

SBNova

How is the compatability of that LS-1 throttle body- meaning IAC's and TPS's to a 165' GM ECM ?? What is the flow comparison between a 48/52/58mm TPI style throttle body?? I was actually planning on reusing my existing TPI throttle body.

Heres what I have;
Running/driving engine in my Nova- 355, forged flat tops, scat crank, Dart sportsman ported CNC heads, Victor Jr, Holley 750.

This will be transplanted in part into my 85 Vette, combining my TPI components( 24lb injectors,rails,throttle body,sensors,HEI) running off my swapped in 165' GM ECM, chip by me, and a Comp roller cam which I cant remember off hand which one but its like 230@.050 and just over 500 lift- dual pattern on a 114 LC, which comp says is great for tpi or blown engines. Did I mention this will all be Procharged/twin intercooled @10 psi?! The procharger is already on the stock L-98 TPI in the vette.

The reason for using the engine from the Nova is that is has what I desire for the engine in the Vette, then I get to build my 400+ ci small block for the Nova!

This is why I am considering different throttle body options. I also have a serious hood clearance issue to deal with, so the fatory TPI style may be the way to go with an elbow/adapter.

biggtime

If i were you, I would by a stealth ram and make a new plenum to clear that hood. Then you could use all of your stock components. I use Accel DFIV7's on my stuff so i do not know compatability to the stock ecm although i would imagine they would work you just would have to change plugs.

87CIZ

iTrader: (8)

mine does have a provision for a tps, but the iac would have to be milled i guess.... i dont know how the damn thing works anyway

87CIZ

iTrader: (8)

just wondering how are you doing your fuel system? i know the third gens are a return system but the ls1's arent? how can i convert to the returnless type?

SBNova

I thought about the stealthram, and modifying it- but doing it this way I have all the stuff already- the HSR I have to buy a bunch of stuff. Plus the Victor Jr flows more anyway.

biggtime

It has no Plenum and if you are thinking of putting it under boost a plenum is your freind. Do some research on plenum design and size. you will be surprised

SBNova

Yeah, I understand that the Jr has a very small plenum (comp to the TPI anyway), but it will probably be doubled by the time I add an elbow to mate up with my TPI throttle body.

Where is a good place to search about plenum volume? Got any links???

Grumpy

One thing that seems to be constantly missed is extending the rear wall of the plenum back past the rear most wall of the last runner. If you look at this simple box upper I made for my car, you can see that I carried it to an extreme while sorting out what worked.

If you attend any big meet where GNs are prevalent you'll see that the plenums on the sheet metal stuff is usually a min of 1.5x engine displacement. And at the Garret Musuem in Pidgeon Forge they have a Chev Indy engine on display. While you can't get any direct measurements, you can get a ruler close enough to approx things.

http://home.woh.rr.com/brucesgn/manifolds/dcp4136.html

Here's a pic of the next manifold to go on.

87CIZ

iTrader: (8)

i got my throttle body but it looks different than yours mine doesn have the tps on it i still have to get it. (by the way do you have a part number?) and is that your iac in the front?

87_TA

Just to let some people know, and the question has been asked -
I am selling this now..


https://www.thirdgen.org/forums/engi...=1#post3006263
----------
Here it is

Ronny

iTrader: (1)

is sequential(4 barrel) TB all that important on TPI application?

i believe it is for TBI.

i see ACCEL is progressive. not sure on Holley MPFI systems as they dont state. Holley new version is prog on TBI(sweet).