Spreadbore Intake with Holly

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Mar 23, 2014 | 10:14 PM

ctuinstra

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Racer

Joined: Jan 2014

Posts: 425

Likes: 3

From: Jefferson City Missouri

Spreadbore Intake with Holly

After rebuilding my Holly I noticed its sitting on an Edelbrock Performer spreadbore intake. It has a plate between the carb and intake, but is there good reason to change the intake to one that is designed more for the 4160 Holly? Seems like its working just fine, but you never know what your leaving on the table.

Mar 23, 2014 | 10:18 PM

ctuinstra

Thread Starter

Racer

Joined: Jan 2014

Posts: 425

Likes: 3

From: Jefferson City Missouri

Crap, I meant that for Tech/Performance not General.

Mar 23, 2014 | 10:20 PM

qwank

Le Mans Master

Joined: Feb 2011

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From: Southern NH

i'd change it

Mar 23, 2014 | 10:26 PM

ctuinstra

Thread Starter

Racer

Joined: Jan 2014

Posts: 425

Likes: 3

From: Jefferson City Missouri

Quote:

Originally Posted by qwank

i'd change it

I'd like to stick with the Edlebrock, would you stick with the Performer or something else?

Anything made for the BB 454 is going to have a spreadbore. What to do?

Last edited by ctuinstra; Mar 23, 2014 at 10:36 PM.

Mar 23, 2014 | 11:47 PM

qwank

Le Mans Master

Joined: Feb 2011

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From: Southern NH

they dont make a squarebore intake for a big block chevy?

Mar 24, 2014 | 12:11 AM

7T1vette

Team Owner

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From: Crossville TN

Keep the spreadbore intake.....install a Q-Jet.

Mar 24, 2014 | 11:45 AM

mikem350

Melting Slicks

Joined: Feb 2006

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From: Sunrise FL

The regular performer intake has dual bolt patterns for either carb style. Maybe the adapter is acting like a spacer helping top end...or it could be choking air flow??

Just make sure your BB has hood clearance if u make changes. Don't use a hi rise manifold with a short air cleaner!!

Mar 24, 2014 | 07:42 PM

ctuinstra

Thread Starter

Racer

Joined: Jan 2014

Posts: 425

Likes: 3

From: Jefferson City Missouri

The intake has a bolt pattern for both, so maybe it doesn't matter.

Mike, the plate matches the carb and looks like a squarebore to the carb. I don't think that it really matters unless it's when looking for every inch of HP.