Intake Manifold List for Production 351C Cast Iron Cylinder Heads
by Dan Jones

Ford 351C intake (p/n D1ZX-9425-DA)
- low rise dual plane with Holley carb bolt pattern and squarebore throttle plate bores
- aluminum casting, available over-the-counter

Ford 351C intake (p/n D0AE-9424-L)
- low rise dual plane with Holley carb bolt pattern and squarebore throttle plate bores
- iron casting, fitted to early 4V engines fited with 4300 carbs

Ford 351C 4V intake 
- low rise dual plane for Motorcraft 4300D (Holley bolt pattern but spreadbore throttle 
plate bores) manufactured in aluminum (as fitted to 351 Boss and HO engines) or iron (as 
fitted to CJ/4V engines)
- D0OE-9424-D = '70 cast iron spread bore
- D1AE-9424-AB = '71 cast iron spread bore
- D1ZZ-9424-B, G, F = '71-'72 Boss 351/HO aluminum spread bore 

Ford 351C 4V intake (p/n D1ZX-9424-FA) 
- high rise single plane aluminum intake with Dominator flange
- available over the counter

Ford 3x2 Barrel
- experimental 3x2 barrel dual plane intake
- designed to use either Corvette or big block Mopar vacuum secondary tri-power Holley 
2 barrel carbs
- due to carb spacing, only side hung float bowl will fit
- very rare 

Bud Moore Mini Plenum
- plenum style intake with removable top
- developed for Boss 302's but used with spacer plates on 351C's

Bud Moore Maxi Plenum
- plenum style intake with removable top
- many different tops available including 1x4, 2x4, inline 4, 3x2, dominator
- essentially a tunnel ram design designed to fit under low hood lines 

Edelbrock F-351 4V
- low rise dual plane with Holley carb bolt pattern 
- obsolete part number, replaced by Performer 351 4V
- runner ports are smaller than intake ports for increased velocity 

Edelbrock Performer 351 4V (P/N 2665)
- low rise dual plane with Holley carb bolt pattern 
- runner ports are smaller than intake ports for increased velocity

Edelbrock F-351 2V
- low rise dual plane with Holley carb bolt pattern 
- obsolete part number, replaced by Performer 351 2V
- runner ports are approximately the same size as cylinder head port

Edelbrock Performer 351 2V (P/N 2750)
- low rise dual plane with Holley carb bolt pattern 
- runner ports are approximately the same size as cylinder head port

Edelbrock Scorpion 4V (P/N xxxx)
- high rise single plane with Holley carb bolt pattern
- similar in appearance Torker but taller 
- no longer in production

Edelbrock Torker 351 (P/N 2760)
- high rise single plane with Holley carb bolt pattern 

Offenhauser Dual Port 351C-4V (6013-DP)
- dual port design (runners split into top and bottom sections, plenum 
split fore and aft, primaries feed longer path lower runners, secondaries 
feed shorter path upper runners), Holley carb bolt pattern

Offenhauser Dual Port 351C-4V (6014-DP)
- dual port design (runners split into top and bottom sections, plenum 
split fore and aft, primaries feed longer path lower runners, secondaries 
feed shorter path upper runners), spread bore bolt pattern 

Offenhauser Dual Port 351C-2V (6011-DP)
- dual port design (runners split into top and bottom sections, plenum 
split fore and aft, primaries feed longer path lower runners, secondaries 
feed shorter path upper runners), Holley carb bolt pattern

Offenhauser Dual Port 351C-2V (6012-DP or is it 6111-DP)
- dual port design (runners split into top and bottom sections, plenum 
split fore and aft, primaries feed longer path lower runners, secondaries 
feed shorter path upper runners), spread bore bolt pattern 

Offenhauser Turbo Thrust 351C
- tunnel ram with various tops
- part number: 5935 base, 5936 single quad top, 5938 dual quad
top, 5993 single spreadbore top, 5937 Holley
single Dominator top, 5983 3 Weber IDA top,
6102 special low volume single quad (Holley or
spread bore) top

Offenhauser Port-O-Sonic 351C-4V (6120)
- high rise single plane with Holley carb bolt pattern 

Offenhauser Port-O-Sonic 351C-4V (6121)
- high rise single plane with spread bore carb bolt pattern 

Offenhauser Port-O-Sonic 351C-2V (6122)
- high rise single plane with Holley carb bolt pattern 

Offenhauser Port-O-Sonic 351C-2V (6123)
- high rise single plane with spread bore carb bolt pattern 

Offenhauser 360 Equa-Flow 351C-4V (5964)
- low rise single plane with Holley carb bolt pattern 
- short runner design with split plenum (side-to-side), plenum divider
cut down and/or windowed

Offenhauser 360 Equa-Flow 351C-4V (5966)
- low rise single plane with Holley Dominator carb bolt pattern 
- short runner design with split plenum (side-to-side), plenum divider
cut down and/or windowed

Offenhauser 360 "Single Quadrajet High Rise" 351C-4V (5965)
- low rise single plane with spread bore carb bolt pattern 
- probably same as Equa-Flow

Offenhauser Dial-A-Flow 351C-4V (6127)
- high rise single plane with Holley Dominator carb bolt pattern 
- has interchangeable "turtles" to adjust plenum volume and floor shape

Offenhauser Dial-A-Flow 351C-2V (6128)
- high rise single plane with Holley Dominator carb bolt pattern 
- has interchangeable "turtles" to adjust plenum volume and floor shape

Weiand X-Celerator 351V-4V (7517)
- low rise single plane with Holley carb bolt pattern 

Weiand X-Celerator 351V-2V (7516)
- low rise single plane with Holley carb bolt pattern 
- ports are larger than head ports. It's essentially pre-ported and 
requires the heads be match ported to the intake. 

Weiand Hi-Ram 351C-4V dual Holley tunnel ram
- tunnel ram for dual Holleys
- p/n 1996 for '660' carbs
- p/n 2994 for Dominators

Holley Street Dominator 351C-2V (300-12)
- low rise open plenum single plane with Holley carb bolt pattern 
- advertised as a universal fit for both 2V and 4V but the ports 
are actually smaller than a stock 2V cylinder headintake port,
plenum is also smaller than other single planes
- One unique feature is that the plenum opening is trapezoidal and 
will directly mount a stock Motorcraft 4300D spreadbore carb. 

Holley Strip Dominator 351C-4V (300-13)
- high rise air gap open plenum single plane with Holley carb bolt pattern 
- One unique feature is that the plenum opening is trapezoidal and 
will directly mount a stock Motorcraft 4300D spreadbore carb. 

FPP 4145 (mfg by Blue Thunder) 351C-4V (p/n 4145)
- high rise dual plane with Holley carb bolt pattern 

FPP 4145B (mfg by Blue Thunder) 351C-4V (p/n 4145B)
- high rise dual plane with Holley carb bolt pattern 
- same as FPP 4145 except the heat risers are blocked, the plenum divider 
is cut down one inch and the carb flange enlarged 

FPP 4146 (mfg by Blue Thunder) 351C-4V (p/n 4146)
- high rise dual plane with Holley carb bolt pattern 
- same as FPP 4145 except the carb flange is machined for a Holley Dominator
carb (1050 CFM)

351C Intake Manifold Notes

- Ford SVO markets various Edelbrock intakes under different p/n's. 
- There's a rumour that Holley or a second party may reintroduce the 
Strip Dominator themselves, possibly with a 2V port size version as well.
- Still need to add info on:
Australian Cleveland intakes 
Mechanical fuel injection intakes
Hall Pantera Weber intake
Supercharger intakes

Ford DOZX 9425-A and DOZX 9C483-A
- lower and upper intake manifolds for inline 4 barrel Autolite carbs
- used on Boss 302 and 351C-4V (with spacer plates)
- See notes below.

Autolite Inline 4 Barrels

The Autolite inline 4 barrel carbs were developed as a way of dealing with 
the single 4 barrel rule imposed by the SCCA in Trans Am racing. The thought 
was since any 4 barrel carb was allowed, why not make a unit with the barrels 
all in a single row for better distribution. Inline carbs came in 2 versions. 
Part number DOZX 9510-A, aimed at Trans Am and NASCAR racing, used 1 11/16" 
throttle bores and was rated at 850 CFM. Part number DOZX 9510-B, aimed at 
drag and unlimited class racing, used 2 1/4" throttle bores and was rated at 1400 CFM. 

Ford developed a companion 2 piece Cross Boss intake for use with inline 
carbs on Boss 302 engines and, with spacer plates, on 351C's. The basic 
Cross Boss arrangement consisted of a lower plenum, part number DOZX 9425-A, 
with a bolt-on top cover, part number DOZX 9C483-A. The removable top made 
porting easier. In classes that were not limited to a single four barrel, 
an 8V cover was available that, in Ford's words, "provides one barrel per 
bore, located directly above the intake passages". It is unclear from the 
photos I've seen if this arrangement used independent runners or a plenum. 
In any event, inline fours could be adapted to Weber or fuel injection 
independent runner manifolds. In fact, Ford recommended using two of the 
1400 CFM inline carbs on a Doug Nash fuel injection manifold for all out 
351C drag racing efforts.

The carbs themselves used a lot of off-the-shelf Autolite 2 barrel carb 
hardware. There were also calibration kits (part number D1ZX-9S549-AA) 
and gasket kits (part number D1ZX-9502-AA). These were strictly race 
carbs and were never equipped on any production vehicle. Early versions 
didn't even have idle circuits, requiring a delicate throttle adjustment 
just to get them to run @ 1500 rpm. Later versions were equipped with 
idle circuits that apparently worked quite well. In a 1973 test conducted 
by Ak Miller, a 351 Cleveland equipped with dual inline fours was tested 
against an open plenum tunnel ram equipped with a pair of conventional 
Holley 710 4 barrels. Low speed operation with the tunnel ram was termed 
"very poor" and the engine didn't start to work until 5000 rpm. The same 
engine equipped with an independent runner intake and a pair of the 1400 
CFM Autolite inline fours faired much better. Peak horsepower matched the 
tunnel ram but, with the inline carbs and independent runner intake, the 
engine idled well at 600 rpm and pulled evenly across the rev range. Low 
speed operation was termed "fantastic". Ford had great plans for the 
inline carbs but like many of Ford's better ideas, the inline four died a 
premature death when Ford pulled out of racing in the '70's.

Intake Manifold List for Yates and SVO High Port Aluminum Heads 

Part Number Deck Head A/B Description
Hgt In/In
In
M-9424-A331 9.2 A3/C302 4.90/5.90 Essentially an Edelbrock Torker 
casting with the lower port sections filled in to match high port cylinder 
ports, no air gap, no carb heat
M-9424-A331 9.2 A3/C302 6.25/6.25 NASCAR single plane, Roush
M-9424-A351 9.5 A3/C302 6.50/6.50 NASCAR single plane, Roush 
M-9424-A351 9.5 Yates 6.50/6.50 NASCAR single plane, C3L flange 
M-9424-B351 9.2 A3/C302 6.30/6.30 NASCAR single plane, short track
M-9424-C351 9.5 A3/C302 7.36/7.36 single plane Edelbrock 
M-9424-D351 9.2 A3/C302 6.94/6.94 NASCAR single plane, Edelbrock
M-9424-E351 9.2 A3/C302 6.40/6.40 NASCAR restrictor plate 
M-9424-E351 9.2 Yates 6.40/6.40 NASCAR single plane, restrictor, C3L
M-9424-EE351 9.2 Yates 7.50/7.50 single plane, restrictor plate,
lightweight, no valley tray
M-9424-F351 9.5 A3/C302 6.60/6.60 NASCAR single plane, restrictor plate 
M-9424-F351 9.5 Yates 6.60/6.60 NASCAR single plane, restrictor plate
M-9424-G351 9.2 2V iron 3.50/4.30 street dual plane, Edelbrock Performer 
M-9424-K351 all C302 ---/--- Kinsler fuel injection 
M-9424-L351 all B351 ---/--- Kinsler fuel injection 
M-9424-M351 all A3 ---/--- Kinsler fuel injection 
M-9424-N351 9.5 A3/C302 ---/--- NASCAR, 2 piece for use with restrictor
M-9424-W351 9.2 Yates 6.87/6.87 NASCAR single plane, 4500-8500 rpm
M-9424-W351 9.2 Yates 7.97/7.97 single plane, no valley tray, C3L, short track
M-9425-W351 9.5 Yates 7.50/7.50 single plane, C3L, short
M-9424-Y351 9.5 Yates 6.87/6.87 NASCAR single plane, 4500-8500 rpm

Edel #2960 9.2 Yates 6.97/6.97 Victor GN 351-Y, NASCAR Busch, Super Truck, and Winston
Cup, no waterneck in manifold 2.8 sq. in. runners

Edel #2961 9.2 Yates 6.97/6.97 Victor 351-Y Spider, NASCAR Busch, Super Truck, Winston
Cup, 5000-8500 rpm, requires separate lifter valley cover,3.2 sq. in. runners, no waterneck

Edel #2987 9.2 A3/C302 7.36/7.36 Victor 351-AH 
Edel #2990 9.2 A3/C302 6.81/6.81 Victor 351-AH II 4500-8500 waterneck cast in

Edel #2991 9.2 Yates 6.97/6.97 Victor 351-Y 4500-8500 no waterneck, 2.95 sq. in. runners

IA-104BP 9.2 A3/C302 ---/--- Inglese downdraft Weber intake, 4 x 48 IDA

Intake Notes

1. In the above list, A3/C302 refers to the entire range of high port,
non-Yates, heads - A3, B351, C302, C302B, D302, and D302B. The 
Yates intakes cover all except the recent "high port" version of 
the Yates heads. There are no intakes currently in production for
... versions of the Yates heads.

2. Note there are two A331 intakes for the 9.2" deck height block.
One is a Roush intake and has "Jack Roush Eng" cast into one
of the intake runners and the A331 part number cast into another. 
It has a level carb base (A/B heights equal) and is an air gap 
intake like most of the other SVO high port intakes. The other 
is basically an Edelbrock Torker with the lower portion of the 
ports filled in. It has the A331 part number and Ford Motorsport 
cast into the valley cover part of the intake and a canted carb 
base. I have never seen any mention of the Edelbrock A331 in any
of the Motorsport literature. 

3. The Kinsler manifold includes magnesium two piece castings (each 
bank of four injectors bolts independently to a head), 2 7/16" 
diameter throttle plates, stainless steel throttle shafts with 
bronze bushings. Since they are two piece manifolds, bolting 
directly each cylinder head, they will fit any deck height block. 
Originally, SVO also listed three separate part numbers for the 
Kinsler mechanical injection manifolds. Part number M-9424-K351 
was for C302 heads, M-9424-L351 for B351's, and M-9424-M351 was
for A3's. In later years, only one part number, M-9424-K351 was 
listed for the Kinsler injection. 

4. It is rumoured that when SVO introduced the Yates heads, there was
a screw up with the part numbers for the intakes, assigning the same 
numbers to both the standard high port intakes and the Yates intakes. 
If you look at the table of intake manifolds above, you'll see 
several part numbers that are shared by both the A3/B351/C302 and 
Yates compatible intakes. I've been told that SVO's response was to 
destroy the remaining non-Yates intake. Whether or not that is true, 
it is true that intakes for the A3/B351/C302 heads are rarer than the 
cylinder heads. Also, many of the intakes on the used market have 
been ported, typically to increase high rpm power. If you're looking 
to run one of these on the street, try to find one that's not been 
ported or only lightly ported. 

5. Now that Brodix has introduced a C302B replacement head, there's a 
rumour that a secondy party may reintroduce the A351 and B351 SVO 
high port intakes.

6. Intakes meant for standard Cleveland heads can be used with SVO high 
port heads, though the extent of re-work necessary will vary with the
individual port size. The A3 intake ports are *not* relocated upward. 
They simply have the lower portion filled in so any 4V intake will 
bolt up. All that's required is to fill the lower part of the port 
with aluminum weld and port match. I noticed this would be particularly 
easy to do on my Offy 360. The port opens up (more precisely drops down)
at the end of the runner. Only a short section of the runner would 
need to be welded up to match. B351 and C302 heads have smaller ports
so may require additional welding and/or port matching.

Edelbrock Victor 351 AH-II (P/N 2990)
- air gap high rise single plane with Holley carb bolt pattern 
- for raised port aluminum SVO heads (C302) on 9.2" deck height
Cleveland and SVO blocks
- requires Windsor style water passages in heads 
- waterneck section cast into manifold

Edelbrock Victor GN 351-Y (2960)
- air gap high rise single plane with Holley carb bolt pattern 
- for raised port aluminum SVO heads (Yates) on 9.2" deck height
Cleveland and SVO blocks
- designed for NASCAR Busch Series and Winston Cup engines (approved by 
NASCAR for Busch Series, Super Truck Series and Winston Cup)
- no waterneck provisions in manifold.

Edelbrock Victor 351-Y (2991)
- air gap high rise single plane with Holley carb bolt pattern 
- for raised port aluminum SVO heads (Yates) on 9.2" deck height
Cleveland and SVO blocks
- designed for circle track racing applications
- no waterneck provisions in manifold 


351M/400 Aftermarket 4 Barrel Aluminum Intake Manifold List

Edelbrock S.P.2.P. 400 (P/N 3370)
- low rise (A=3.5", B=4.9") dual plane with Holley carb bolt pattern 
- CARB emissions approved 
- advertised RPM range: idle-4000 rpm
- no longer in production
- low rpm type economy manifold with smaller than stock runners 

Edelbrock S.P.2.P. 400-2V (P/N 5171)
- low rise (A=3.7", B=4.95") dual plane with Holley 2BBL carb bolt pattern 
- CARB emissions approved
- advertised RPM range: idle-4000 rpm
- no longer in production
- low rpm type economy manifold with smaller than stock runners

Edelbrock Streetmaster (P/N 3190)
- need info

Edelbrock Performer 400 Non-EGR (P/N 2171)
- low rise (A=3.6", B=4.75") dual plane with Holley carb bolt pattern 
- not CARB emissions approved 
- advertised RPM range: idle-5500
- installation notes from Edelbrock catalog : choke block-off plate #8971 
included, recommended intake gasket: Fel-Pro #MS96020. 

Edelbrock Performer 400 EGR (P/N 3771)
- low rise (A=3.6", B=4.75") dual plane with Holley carb bolt pattern 
- CARB emissions approved 
- advertised RPM range: idle-5500
- completely different casting from 400 non-EGR
- can be used in three configurations:
1. OEM 2V carb and EGR system with supplied 2V EGR spacer
2. 4V EGR system with either an Edelbrock #8053 4V EGR spacer, 
or an Edelbrock #8017 and Ford #E4ZZ9A-589E 4V EGR spacer 
3. Non-EGR 4V system with an Edelbrock #8714 adapter.
- installation notes from Edelbrock catalog: recommended intake gasket: 
Fel-Pro #MS96020. 

Holley Street Dominator 351M-400 (P/N 300-20 or is it 301-14?)
- low rise, open plenum, single plane 
- Holley/Carter standard 4 BBL and *Motorcraft* spreadbore carb bolt pattern
- advertised rpm range: idle-5500
- CARB emissions approved 

Offenhauser Dual Port 400 (P/N 6033-DP)
- low rise dual port with Holley carb bolt pattern 
- not CARB emissions approved 
- advertised RPM range: idle-???
- '71 later 400 

Offenhauser Dual Port 400 (6034-DP)
- low rise dual port with spread bore carb bolt pattern 
- not CARB emissions approved 
- advertised RPM range: idle-???

Offenhauser Dual Port 351M (P/N 6141-DP)
- low rise dual port with Holley carb bolt pattern 
- not CARB emissions approved 
- advertised RPM range: idle-???
- '75 and later 351M 

Weiand Action Plus 351M/400 Series (P/N 8010)
- low rise (A=3.75", B=4.75") dual plane with Holley carb bolt pattern 
- not CARB emissions approved 
- advertised RPM range: idle-6000
- looks to be the highest performing performing of the bunch?
- might be the one with enough area to match 4V ports?

Weiand 351C-2V intake manifold to 400 block spacers (P/N 8205)
Price Motorsport Engineering (PME) also has spacers, Moroso may as well?

Notes: 
the above intakes are for 2V style heads (U.S. and Aussie).