Carburetor
Super Moderator
Joined: Apr 2004
Posts: 34,499
Likes: 2,811
Depends on cam and intended use & single or dual carb.
750 to 1000 according to:
https://www.summitracing.com/newsand...cfm-calculator
750 to 1000 according to:
https://www.summitracing.com/newsand...cfm-calculator
Fleet Mechanic
Joined: Jun 2019
Posts: 1,899
Likes: 236
From: Southern California
On my 352 with a moderate cam, intake, headers, bumped up compression, I'm running a 650 and wouldn't want to go any bigger. So, unmless you are going really ***** out on your engine build a 750 or 800 CFM should be great. IMHO
More Turbo
Joined: Sep 2019
Posts: 656
Likes: 125
From: Northern Texas
Logistics Pro
Joined: May 2015
Posts: 4,469
Likes: 965
From: Tri Cities, TN
In my 69-muscle parts catalog Ford recommends a 780 Holley on all the single 4bbl manifolds the PN was C5AF-9510-BU. That said a 427 engine could handle a lot bigger carb than that. Since on the 2-4bbl manifolds they use two 780's. Good luck keeping that thing tuned up on the street.
Thread Starter
|
Trailering
Joined: Mar 2023
Posts: 23
Likes: 2
In my 69-muscle parts catalog Ford recommends a 780 Holley on all the single 4bbl manifolds the PN was C5AF-9510-BU. That said a 427 engine could handle a lot bigger carb than that. Since on the 2-4bbl manifolds they use two 780's. Good luck keeping that thing tuned up on the street.
Logistics Pro
Joined: May 2015
Posts: 4,469
Likes: 965
From: Tri Cities, TN
Unless you plan on burning race gas. Pay attention to your static and dynamic compression. The stock ones were 11.1-1 mechanical cam and 10.9-1 Hyd. cam. Maybe your grandpa tuned it down a little when he put it in. The only 427 I spent much time in was in a 64 Galaxie and it was border line miserable to drive on the street. And that was when you could buy real gas.
Trending Topics
Thread Starter
|
Trailering
Joined: Mar 2023
Posts: 23
Likes: 2
Unless you plan on burning race gas. Pay attention to your static and dynamic compression. The stock ones were 11.1-1 mechanical cam and 10.9-1 Hyd. cam. Maybe your grandpa tuned it down a little when he put it in. The only 427 I spent much time in was in a 64 Galaxie and it was border line miserable to drive on the street. And that was when you could buy real gas.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
Logistics Pro
Joined: May 2015
Posts: 4,469
Likes: 965
From: Tri Cities, TN
I would say you first need to figure out exactly what you have. Find the casting numbers and date codes on the block and heads, manifold etc. Any history you can get from family. Remember the 427 was a low production engine and only sold in new vehicles from 1963-1968. But there were a bunch of them sold over the counter to racers though. The only detuned one that Ford put in production cars was the 68-hyd. cam version. And even it was a premium fuel engine. If it were mine and it turns out to be a complete unmolested 427, I would swap it for another engine that will burn the camel **** we have for gas now and turn it into money regardless of who put it there.
Logistics Pro
Joined: Mar 2005
Posts: 3,771
Likes: 80
From: tujunga, calif
A 427 will have the COOL factor but what are you planning to do with it? If you are only driving it to the local car show so you can sit around with the hood up you may get away with it. If you plan on 200 mile trips you will ruin the engine or go broke buying racing fuel..
Thread
Thread Starter
Forum
Replies
Last Post
kwanderi
Fuel Injection, Carburetion & Fuel System
2
Mar 20, 2005 04:09 AM
Orange '63
Fuel Injection, Carburetion & Fuel System
4
May 4, 2004 08:38 AM
TheNomad
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
15
Jun 22, 2002 11:07 PM