No stupid questions

**sunbeam39** · 10-11-2007, 11:49 AM

I have been told that there are no stupid questions just stupid answers. However, I feel stupid asking these ones:

I have a 95 SFI 3.4 litre that is going to be rebuilt, naturally aspirated. I have some ideas of how to do this along with some new part numbers, but am confused regarding the current heads on it.

They have the injectors, I won't be useing them so:
a. do I need to change to heads without injectors;
b. can I remove them and run it as is; (not likley);
c. do I plug the injector ports with something?

Again new to rebuilding, just enough knowledge to be dangerous!

**bigrondownhiller** · 10-11-2007, 12:04 PM

Originally Posted by sunbeam39

I have been told that there are no stupid questions just stupid answers. However, I feel stupid asking these ones:

I have a 95 SFI 3.4 litre that is going to be rebuilt, naturally aspirated. I have some ideas of how to do this along with some new part numbers, but am confused regarding the current heads on it.

They have the injectors, I won't be useing them so:
a. do I need to change to heads without injectors;
b. can I remove them and run it as is; (not likley);
c. do I plug the injector ports with something?

Again new to rebuilding, just enough knowledge to be dangerous!

are you using a carb?

**sunbeam39** · 10-11-2007, 12:13 PM

Yes, quoted the following, from Edelbrok and Jegs tech services. This setup is used on the 3.4 build of the Stalker V6 roadster. I asked them the same question but havn't received an answer yet:

Holley 0-8007 390 cfm 4 brl @ $400
Edelbrock 3789 @$115
3785 @$189.95
2112 @$140 special order
9737 @$70 special order

**bigrondownhiller** · 10-11-2007, 12:18 PM

the stock FI manifold wont work that well. It is designed to move air only. If you use a carb on it, I dont think it will work that great. Do they make a carb version of the manifold? the kit car guys are always using fwd gm engines in cars. I would check some sites out to see what people have done.

**sunbeam39** · 10-11-2007, 12:33 PM

Edelbrok makes a two piece manifold part#'s
350-3785 Manifold base
350-3789 Top
510-0-8007K 390 cmf Carb Kit
Cam 3790

**sunbeam39** · 10-11-2007, 12:36 PM

http://www.stalkerv6.com

These cars use either the 2.8, 3.1 or 3.4 most are naturally aspirated small cars that go fast!!

**bigrondownhiller** · 10-11-2007, 12:40 PM

you dont need the injectors then. I guess you are running a distributer too?

**sunbeam39** · 10-11-2007, 12:45 PM

Correct, no injectors, hence what do I do with the holes the injectors leave when I take them out?

Need some injectors?

**Orcus79** · 10-11-2007, 03:05 PM

If you are moving from injectors to a carb (i don't know why you would though) You need to get a new intake that is built for a carb, thus elimintaing the injector ports. The injectors do not interact with the heads at all beside spraying fuel at the intake valve. Your good to go.

**sunbeam39** · 10-11-2007, 04:19 PM

I am resto-customizing a 1960 Sunbeam Alpine, and will not be putting a computer in it run the FI, also with the cam, manifold, carb, nitrous set up I have planned, I will run about 250-280 HP + or - on a 1850 lb street car. Do the math, it'll go fast enough for me!