2oldsguy

Has anyone been successful with a non Q-jet carb on a stock aluminum 455 intake and AOI without major modifications?
Thanks,
Joe

acavagnaro

What model year are you interested in? Your photo looks like a '70. I have a '69 (400G) with a Performer intake and aftermarket OAI set up that replicates the original hardware. I'm running a 750 Street Demon with phenolic fuel bowl. Everything fits well under the stock hood and I've been extremely happy with the carb. I never had a problem with the original Q-jet but wanted to do something a little different after the engine mods.

olds 307 and 403

The Street Demon will even bolt to the intake. You just need to make the back "Goggle" valve secondaries clear without hitting the intake.holes.

Olds64

If you're going to get an aftermarket carburetor get the Edelbrock Thunder AVS.

https://www.summitracing.com/parts/edl-18134/overview/

You'll need a spacer to make it fit the OE spread bore intake. I've found that Edelbrock carbs are more streetable than Holleys. Of course, nothing beats properly rebuilding your Quadrajet.

joe_padavano

Which means it won't fit the O.A.I. setup.

2oldsguy

Yes it is a 70 455 with aluminum heads and stock Olds aluminum manifold.
The QJet on there now bubba has worked on it and I would like to replace it.
I was reading about the Holley Sniper FI system, anyone have experience with it?
Thanks for all the responses.
Joe

racintj

Just put the Sniper EFI on our 350 and we love it. Starts instantly and excellent throttle response.

Olds64

I've heard good things about Holley Sniper EFI. They even have a spread bore unit now that will bolt directly to your OE manifold.

racintj

We started to go with that unit, but we decided to just stick with the Holley style. I will say, if you're running an aluminum intake with the EGR plate, then you'll need to run a spacer. We had to run an adapter anyway since we were going from qaudrajet to Holley (spread to square).

olds 307 and 403

https://www.google.com/url?sa=t&sour...CD9JM-RtX0znXx