Cliff's Quadrajet Parts and Rebuild Kits

General Category => Quadrajet Carb Talk and Tips => Topic started by: Reggie on March 30, 2023, 05:24:49 PM

Title: Adaptors
Post by: Reggie on March 30, 2023, 05:24:49 PM

I know adaptors are not ideal but it seems 90% of aftermaket intakes are squarebore.  I have a Holley 300-36 id like to try on my 350 combo, so is there any adaptor thats better than others?  Thanks

Title: Re: Adaptors
Post by: Mudsport96 on April 02, 2023, 06:18:39 AM

Im trying to remember, is the 300-36 the Holley Street Dominator? If you are dead set on running it, get the correct square bore to spread bore adapter...and grinder ready. To make it work decent you will need to clean up the flow path and do some radius work. I used an open spacer on an old Torker single plane, and by the time i was done grinding and blending you couldn't tell where the adapter and manifold met. Way better than all the overhangs that you will have where the 2 meet. Personally, i would find a dedicated qjet manifold before doing that again.
Also, what is your engine setup?

Title: Re: Adaptors
Post by: Reggie on April 02, 2023, 02:05:35 PM

Yes its a holley street dom dual plane.  Engine is a 360 sbc, bowtie 2 heads, 232/234 hydraulic 108lc, 10.1, 3.36 gears, 4 speed sag.  I like the 300-36, it looks almost a factory intake when painted and has a decent plentum.  If i could find a quaddy pattern one id use it

Title: Re: Adaptors
Post by: 77cruiser on April 02, 2023, 07:14:55 PM

https://www.ebay.com/itm/285109349464?epid=236206588&hash=item4261d76c58:g:UjcAAOSw26ljwuU8&amdata=enc%3AAQAHAAAA4DLG2TwKa%2BNvvPKxzBeL3ozsnIqwCcPRD2TCeGPJAZou7yEv7ssxHtyyeGEOOmAf7GAtYlbetzEpuBykkyMWdUCdYtMpoxF%2FsouoENHJQdkJ3cpOJGrZmFeg4FNtIxwoZrsKmJl97isQ%2Fi4gwUX1YOJ4%2BDX63VVN19bSnpgEXVnVz0Lt2orj3Paxk6MSgzfDdyXMB%2BzXOXpjNeiRi6Un0G3tji3cavDrS6oA7uEzsi5TyaVulrWQemy2I%2FUDNr8a%2FoZKdJ3CEZ76RVjbsSf4jEzTqkBmijV3dBFlatR6qM9I%7Ctkp%3ABk9SR5aDoM7oYQ

Title: Re: Adaptors
Post by: 77cruiser on April 03, 2023, 07:25:54 AM

(http://)Here's one I did.

Title: Re: Adaptors
Post by: 77cruiser on April 03, 2023, 07:29:40 AM

Intake

Title: Re: Adaptors
Post by: Reggie on April 03, 2023, 01:36:19 PM

The performer RPM  is a decent intake with the powerband where i want but there $700+ here.   I presume thats a square bore intake modded to suit a quaddy? Worth considering, thanks

Title: Re: Adaptors
Post by: 77cruiser on April 03, 2023, 05:59:35 PM

I just opened it up a bit so the transition was a little smoother. I can't remember where I got the adapter/spacer..