Edelbrock D4B

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Junior Member
Post Number: 6
Registered: 2-2009
Friday, June 14, 2013 - 9:59 am   Edit PostDelete PostView Post/Check IPMove Post (Moderator/Admin Only)   
can someone tell me if the D4B will work on a factory 273 motor and heads? I have looked on the web and people say it is the only one that will work on the 1964-1965 motor
thanks Rob
Senior Member
Post Number: 445
Registered: 1-2006

Friday, June 14, 2013 - 10:27 am   Edit PostDelete PostView Post/Check IPMove Post (Moderator/Admin Only)   
There were some changes in the manifold bolt hole angles in the early 273s. If I remember correctly, that manifold is for the older heads. I think manifolds for later heads can be modified to work. Wish I could be more definite, but I have later 318 engines. Ask on FABO!

"I have gone faster, backwards upside down and on fire than most people have gone at all" Don Garlits
Senior Member
Post Number: 184
Registered: 3-2002

Wednesday, June 26, 2013 - 2:17 pm   Edit PostDelete PostView Post/Check IPMove Post (Moderator/Admin Only)   
EDELBROCK TECH Tue Feb 24 18:05:10 PST 1998
The Edelbrock D4B was designed for early 273 only. It has an RPM range from 1000-6000 on the 273. If used on a 360 it will drop the RPM range too probably idle-5000 RPM at best. It is no where near the manifold that the RPM is. We would highly suggest the use of the RPM intake with the RPM package. Thanks- Scott Fort
Senior Member
Post Number: 186
Registered: 12-2001

Wednesday, June 26, 2013 - 3:45 pm   Edit PostDelete PostView Post/Check IPMove Post (Moderator/Admin Only)   
Yes, it was designed for the early heads, but can be modified for use on the later heads. Basically, the only difference is the bolt angle and size....early heads were a smaller bolt at a bit different angle.

EDIT: The "LD4B" was the same intake using the later, larger bolts and diff. angle.

'65 Cdn Valiant Custom 100 'vert
Slant 6 /factory A833....SOLD!

'67 Dart GT 'vert

Check 'em out...

Senior Member
Post Number: 239
Registered: 1-2002

Wednesday, June 26, 2013 - 6:42 pm   Edit PostDelete PostView Post/Check IPMove Post (Moderator/Admin Only)   
Yup, Have done a few of those installs... 64/65 LA 273 used 5/16-18 bolts (intake to head)... 66 and newer LA engines went to 3/8-16 Bolts... and as stated by Darwin, a different angle.

But it's an easy mod if putting on other 273/LA318 heads... 64/65 273 intake to 66 heads and newer just drill holes larger and angle... 66/67 273 intake to 64/65 heads..... use washers...

Clif of Az.
Note: 273 intake NOT recommended for 340/360!!!
Senior Member
Post Number: 113
Registered: 1-2006

Sunday, July 07, 2013 - 5:28 pm   Edit PostDelete PostView Post/Check IPMove Post (Moderator/Admin Only)   
Bring that bad boy to Carlisle and do a swap for the later heads, or sell to to me!!!! LOL
"Chevy's and Ford's are like Belly Buttons.... Everyone has One"
1964 Plymouth Barracuda
1965 Plymouth Valiant Signet
1977 Dodge Adventurer
2007 Dodge Charger
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