OFFENHAUSER Intake Manifold Inquiry (Page 1/2)
ENRUTH NOV 10, 04:08 PM
Hello all! My name is Ian, and I work for Offenhauser. I am currently trying to gauge the interest in our 6272-DP Intake manifold for GM 60 Degree v6. It runs a Holley #0-6229 390 CFM Carburetor. If anyone would be interested please respond to this post so we can gauge the demand.

I currently own an 86 Fiero and am in the process of installing one of these on the car. From what I have researched and measured this intake should fit under the hood of the Fiero with no clearance issues.

Again it is important to reply to this if you are interested in this product.
IMSA GT NOV 10, 08:21 PM
Since I'm in California also, how are you getting around smog? As you know, some of the stock Fieros barely pass smog out here.

And in all due honesty, I'd buy one just to have an Offenhauser part on my vehicle. That name is historically famous in the automotive world. Also some Offenhauser engraved valve covers would be awesome.

[This message has been edited by IMSA GT (edited 11-10-2022).]

cam-a-lot NOV 10, 09:37 PM
Other than the "cool" factor, is there really any benefit to taking a MPFI engine and converting it to carburetor?
ENRUTH NOV 10, 11:14 PM
For IMSA GT:

Yeah, being in California certainly makes using this intake more challenging. My honest goal was to have an EFI setup running either a FITECH unit or a Sniper EFI from Holley and have it set up where when I need to smog it I can just swap the old intake back and plug everything back in. Especially considering the Fiero already has the plumbing for fuel injection. Not a perfect solution but like you said just having a product from Offenhauser Racing on a Fiero is worth it to me .

Places outside of California should have an easier time with this installation. Just depends on emissions regulations.
ENRUTH NOV 10, 11:33 PM


To Cam-A-Lot

There are several benefits depending on how you use it! If you are looking to simplify things in the engine bay, and clean it up, the carb will definitely give you the performance without the complexity. If you enjoy fuel injection and want to simply go that route then there are ways to adapt that as well. Finding someone I trust to properly tune or adjust the stock ECM from the Fiero is getting harder to do. Where as if you go with a Sniper EFI or FITECH fuel injection unit, you have all of the control as to how you want the parameters of the efi to perform. There's also the benefit of an improved airflow with less bends than the stock intake which would see promising results if your heads and exhaust were ported to compensate for the increase.
fieroguru NOV 11, 07:03 AM
Did you happen to notice the last bolded sentence in the ad?

It wouldn't be an issue if you ran a tbi unit, but could cause a carb float issue that would take some adjustment to fix.

Several have ran the edelbrock carb intake over the years and a few milled the carb mount flange so it was level in the chassis.

ENRUTH NOV 11, 09:59 PM
As a general statement to help clarify things. A carburetor WILL work with this intake even in transverse set ups.
The OFFENHAUSER intake is a two piece design and it is not an issue to make the upper half level to accommodate for Carb set ups on transverse engines.
If there are any other concerns or questions let me know!

Also just to remind anyone who is interested, please reply to this thread so that I can push this product and have more castings made!
Thank you.
D3M6B NOV 12, 08:04 AM
I would be interested in this

I'm sure you have a prototype developed. Can we some Dyno run numbers?
fierocarb NOV 20, 10:31 AM
I have the carb setup on mine already and would be interested to hear more.
82-T/A [At Work] AUG 06, 03:20 PM
Old post, I missed this... I don't think too many people saw it. But I would be interested if the upper half could be made to properly orient the carburetor or TBI unit.


Thanks!