Reply to "400 Engine"

> I admit it is a personal taste issue, but I wouldn't want an induction system
> poking through, or a hump in my engine screen. An AFD 2V head & Weiand 2V
> Xcelerator are a low profile combination that are ideal for the rpm range of
> the "street" motor I would build for myself or recommend for someone else.

Should work fine.

> They replace the A3 heads & A331 manifold (Edelbrock version) I recommended
> in the past.

I have a set of those here. With only a bit of bowl clean-up (no porting),
they flowed near 330 CFM which is better than either the CHI or AFD heads
(unported). My C302B's outflow the A3's a bit but they've been ported.
I'm looking forward to seeing Kaase's CHI head flow numbers.

> Admittedly the Ford Motorsports high port heads have greater flow potential.

Yes.

> But the Cleveland engine scene has reached a point where folks are
> building 500 bhp at 6000 rpm with Aussie heads on 377 cu.in. strokers. Thats
> about 80 bhp per liter. That should keep the Pantera competitive on the
> street.

I'm shooting for 550+ HP for my engine. Cubes are 407, the C302 heads flow
332 CFM @ 0.600" lift with good low lift flow so should be realizable. Could
make lots more power but I want to keep it street friendly.

> I don't mind making headers. I love to weld. I don't mind the engine mounts
> or making new brackets for the front of the engine. What I don't know is if
> they make a bell housing for the big block bolt pattern. If I can get a bell
> housing I feel pretty comfortable with the other issues.

Call the Byars Brothers. They do a 460 swap and the 460 shares it's
bellhousing with the standard 351M/400 so whatever they use should work
for you. Whereabouts in Indiana are you? My FMX block is near Cincinnati
(in my dad's storage building) if you want to look it over.

> Some issue for intake manifold availability (some good 2V manifolds and
> adapters for 4V manifolds.

See my intake manifold list below. The Holley Street Dominator 351M-400
is likely the best intake for a strong 400. Think of it as a Weiand Xcelerator
2V for a 351M/400 block. Unlike the 351C Street Dominator which has tiny
ports, the 351M/400 Street Dominator has 2V-sized ports. The best dual plane
is likely the Weiand (which has been advertised as a Stealth but don't be
fooled it's still a low rise dual plane.

Dan Jones

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
- low rpm type economy manifold with smaller than stock runners

Edelbrock Streetmaster (P/N 3190)
- low rise single plane with Holley carb bolt pattern
- no longer in production
- small port, small plenum, economy type intake

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
incl. 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

Notes:

1. The above intakes are for 2V style heads (U.S. and Aussie).

2. For 4V (or 2V) heads you can use spacers and 351C intakes. Weiand makes
spacers (P/N 8205) that mate 351C-2V intake manifolds to 351M/400 blocks.
PME makes spacers for 351C-4V heads on 351M/400 heads.