Need advice.

Reply Subscribe

Thread Tools

Search this Thread

Mar 1, 2008 | 05:39 PM

fmc400

Thread Starter

MSEE

Joined: Apr 2004

Posts: 10,386

Likes: 35

From: Austin, TX

Need advice.

Hi all, I know this has been discussed before but I prefer live conversation over searching so I'm bringing it up again. My '79 with a 300 is sitting in the garage right now with the intake and exhaust manifolds off - I was going to replace them with stock ones, but now I'm thinking that since I've got everything off anyway, what about putting on some performance parts?

I'm thinking of adding an Offy 4-barrel intake, a 4-barrel carb and a header. I'll probably go with Edelbrock. My question is, for those of you that have a setup like this, what do you think? Was it worth the money and would you recommend it?

Lastly, if I put a 4-barrel on it, what obstacles and options do I have for hooking up the throttle linkage and trans kickdown?

Mar 1, 2008 | 07:19 PM

havi

I'll have the Roast Duck

Joined: Jul 2002

Posts: 9,622

Likes: 110

From: Northshore, MN

Lokar has the throttle cable, and I don't think you need a kickdown rod since the low rpm torque is sufficient. On my 79 Bronco, I used stock EFI manifolds from an 89 f150, and a Walker downpipe pn:45166. Slight modification was needed to make it fit. Carb choice for the Edelbrock is typically a 500. Some use Holley 390's.

Mar 3, 2008 | 10:29 AM

63redtudor

Senior User

Joined: Jun 2004

Posts: 305

Likes: 1

The biggest problem I encountered when I installed the offy intake (offy "C") was the throttle cable mount. I used the stock cable & mount, but I had to modify the mount a little. Bolted a piece of angle iron to the intake & then bolted the throttle mount to that. Looks a bit redneck, but it works.
Edwin

Mar 4, 2008 | 09:35 PM

cykoticford

Junior User

Joined: Jan 2006

Posts: 51

Likes: 0

my 79 f150 used to have a offy intake and a holly 500 carb it seemed like it lost half its torque. i didnt like it at all so now i am trying to put a 91 4.9 in there

Mar 6, 2008 | 08:10 PM

Col Flashman

Postmaster

Joined: Apr 2000

Posts: 3,890

Likes: 9

From: La Verne, California

Quote:

Originally Posted by cykoticford

my 79 f150 used to have a offy intake and a holly 500 carb it seemed like it lost half its torque. i didnt like it at all so now i am trying to put a 91 4.9 in there

You must have SNAFU'd something, because the Norm is usually 25% to 50% increase in performance w/ that set-up.

Mar 7, 2008 | 11:10 AM

fmc400

Thread Starter

MSEE

Joined: Apr 2004

Posts: 10,386

Likes: 35

From: Austin, TX

Thanks guys, I've decided to do the swap for sure. The only thing I haven't picked out is the carb - I was first planning on an Edelbrock 500, which I hear a lot of people are happy with, but I've also heard a lot of people use a Holley 390. Between an Edelbrock and a Holley of the same size, I'd choose an Edelbrock simply because they're easier to tune, but I'm wondering if a 500 is too much? What do you all use and how is your gas mileage? Thanks!

Mar 7, 2008 | 04:19 PM

wedefyu

Senior User

Joined: Feb 2008

Posts: 183

Likes: 0

From: Southeast Iowa

Quote:

Originally Posted by fmc400

Is your truck 4by? Cause Edelbrocks suck as@ on an incline, I've seen way too many stall over and over and over running performer carbs, go easy on yourself and get a holley, most of them come with ford kickdown linkage too.