Intake question
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
Well it is a 1968 (C8) manifold and will work on the 1966 and later small port heads. The "S" designates it was originally on a car motor. The trucks had a "T" but the manifolds are identical.
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
No Ford truck with an FE ever came from the factory with a Carter carb (that's all the Edelbrock carb is just a Carter carb). But the 600 CFM is the same size Ford used with their Holley and Motorcraft carbs.
Tuned
Joined: Mar 2009
Posts: 360
Likes: 3
From: Napa
Actually a CJ manifold WILL work with the late heads, as the CJ is basically a Police Interceptor intake cast in iron instead of aluminum, and with the newer high, short ports, and is a very good running intake- just heavy as hell. The mismatch did not hurt anything with the high port dumping into the old-style long port of the CJ- Low Riser type head, as smaller went into larger, and the bottom of the "long" port is dead air anyway- CJ's came that way from the factory. Trying to run an early intake on late heads is where you have a problem, large dumping into small. No such thing as an "SCJ" manifold, same intake used on both.
IIRC, seems like the Holley used on the pickup 390's was a little buggar, not 600, like 390 cfm. 600 cfm Holley with "cathedral" bowls was used on the 390GT car engine
IIRC, seems like the Holley used on the pickup 390's was a little buggar, not 600, like 390 cfm. 600 cfm Holley with "cathedral" bowls was used on the 390GT car engine
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
Actually a CJ manifold WILL work with the late heads, as the CJ is basically a Police Interceptor intake cast in iron instead of aluminum, and with the newer high, short ports, and is a very good running intake- just heavy as hell. The mismatch did not hurt anything with the high port dumping into the old-style long port of the CJ- Low Riser type head, as smaller went into larger, and the bottom of the "long" port is dead air anyway- CJ's came that way from the factory. Trying to run an early intake on late heads is where you have a problem, large dumping into small. No such thing as an "SCJ" manifold, same intake used on both.
IIRC, seems like the Holley used on the pickup 390's was a little buggar, not 600, like 390 cfm. 600 cfm Holley with "cathedral" bowls was used on the 390GT car engine
IIRC, seems like the Holley used on the pickup 390's was a little buggar, not 600, like 390 cfm. 600 cfm Holley with "cathedral" bowls was used on the 390GT car engine
390 heads are 1.34" X 1.93"
PI manifold is 1.34" X 1.93" same as the "S" manifold.
CJ manifold is 1.34" X 2.34"
Som the PI and CJ are not the same at all.
Tuned
Joined: Mar 2009
Posts: 360
Likes: 3
From: Napa
The CJ heads have ports much taller than the 360, 390 & standard 428 heads.
"The mismatch did not hurt anything with the high port dumping into the old-style long port of the CJ- Low Riser type head, as smaller went into larger, and the bottom of the "long" port is dead air anyway- CJ's came that way from the factory."
As you can see if you look, that's what I said- the CJ HEAD had the long Low-Riser port, as it's basically a revised Low Riser head- the CJ manifold DOES NOT- it has the 1.93 port. Got a genuine one dated November '69 out in the shop
390 heads are 1.34" X 1.93"
LATE 390 heads are 1.93"- EARLY 390 heads are 2.34"
PI manifold is 1.34" X 1.93" same as the "S" manifold.
The late C7AE Police Interceptor manifold has the high, short 1.93" ports- I have one, just loaned it out for a dyno session on a 482 with Shelby aluminum MR type heads. It also still had the hole in the back where the old road draft tube went, blocked off with a plate, and still had the boss in the right front where the old oil fill tube used to go- undrilled. CJ manifold was the next evolution. The PI manifold is also much taller than the plain-Jane "S" intake, as is the CJ manifold- in fact the PI, CJ, F427, and the Performer RPM are all very similar in outward appearance
CJ manifold is 1.34" X 2.34"
Nope, again, the CJ manifold has the 1.93 port- the mismatch with the heads is very old news and has been discussed many times on many forums-"The mismatch did not hurt anything with the high port dumping into the old-style long port of the CJ- Low Riser type head, as smaller went into larger, and the bottom of the "long" port is dead air anyway- CJ's came that way from the factory"
Som the PI and CJ are not the same at all.
Never said they were- the CJ is the same basic design, slightly improved and generally consided to be worth another 10-15 hp over the PI- but heavy as hell in iron
"The mismatch did not hurt anything with the high port dumping into the old-style long port of the CJ- Low Riser type head, as smaller went into larger, and the bottom of the "long" port is dead air anyway- CJ's came that way from the factory."
As you can see if you look, that's what I said- the CJ HEAD had the long Low-Riser port, as it's basically a revised Low Riser head- the CJ manifold DOES NOT- it has the 1.93 port. Got a genuine one dated November '69 out in the shop
390 heads are 1.34" X 1.93"
LATE 390 heads are 1.93"- EARLY 390 heads are 2.34"
PI manifold is 1.34" X 1.93" same as the "S" manifold.
The late C7AE Police Interceptor manifold has the high, short 1.93" ports- I have one, just loaned it out for a dyno session on a 482 with Shelby aluminum MR type heads. It also still had the hole in the back where the old road draft tube went, blocked off with a plate, and still had the boss in the right front where the old oil fill tube used to go- undrilled. CJ manifold was the next evolution. The PI manifold is also much taller than the plain-Jane "S" intake, as is the CJ manifold- in fact the PI, CJ, F427, and the Performer RPM are all very similar in outward appearance
CJ manifold is 1.34" X 2.34"
Nope, again, the CJ manifold has the 1.93 port- the mismatch with the heads is very old news and has been discussed many times on many forums-"The mismatch did not hurt anything with the high port dumping into the old-style long port of the CJ- Low Riser type head, as smaller went into larger, and the bottom of the "long" port is dead air anyway- CJ's came that way from the factory"
Som the PI and CJ are not the same at all.
Never said they were- the CJ is the same basic design, slightly improved and generally consided to be worth another 10-15 hp over the PI- but heavy as hell in iron
I happen to have 3 CJ engines, an SCJ engine, plus an extra set of CJ heads, out in the shop right now- and they all measure the same, like they always have- and 4 sets of 406 heads (long port), some C4 low risers (long port), 3 sets of Edelbrocks (short port), and lots of long-port C1AE and C4AE 390 heads, later short-port C8 and D2 heads, 3 Streetmasters (short), 3 Street Dominators (short), 3 Galaxie and 1 T-Bird 3-deuce setups (long), 2 MR 2x4 setups (short), a NOS Tunnel Wedge 2x4 (short), a PSE adapter/ Cleveland 2x4 tunnel ram setup, an F427 (long), a Port-O-Sonic (short), and probably a quarter ton of iron intakes of many varieties and vintages- and my calipers work pretty good. Running kinda short on 427's right now, only got 9
And that "S" manifold was, is, and always will be one to put on the engine if you just don't have anything else laying around, you don't want the oil to leak out the top, and you get it real cheap
Thread Starter
|
Senior User
Joined: Aug 2006
Posts: 387
Likes: 0
From: Ballston Spa, NY
ok so numbers to numbers this intake is going to work?????
and does anyone have any good ideas on preperation ideas for the install. i mean i got a 40 yr old intake has plenty of rust and was wondring on what is some good tips on what to do prior to install i am going to do some rust removal and try to tap out some holes but does anyone have all the bolt hole sizes????
and does anyone have any good ideas on preperation ideas for the install. i mean i got a 40 yr old intake has plenty of rust and was wondring on what is some good tips on what to do prior to install i am going to do some rust removal and try to tap out some holes but does anyone have all the bolt hole sizes????
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
One thing, do NOT glass-bead (sandblast) the intake ports. Or if you do, be prepared to use plenty of hot soapy water and a bottle brush to make sure you get all the sand/media out of the ports.
Many a motor has been destroyed because someone went nuts with the glass-beader and blasted the inside of an oil pan, intake, valve covers, you name it
Many a motor has been destroyed because someone went nuts with the glass-beader and blasted the inside of an oil pan, intake, valve covers, you name it
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
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
Thread
Thread Starter
Forum
Replies
Last Post
dylansf23
Ford Inline Six, 200, 250, 4.9L / 300
18
Nov 8, 2014 07:35 PM
AK FORD GUY
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
5
Oct 13, 2011 11:33 AM
YoungMT Hick
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
7
Aug 21, 2011 05:44 PM
CaseynWall
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
6
Mar 10, 2009 07:56 PM
jkrussell
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
3
Aug 1, 2006 05:24 PM
