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Author
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Topic: 351CJ Build HELP!!!!
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RancheroSandraGayle
Gearhead Posts: 197
From: Ft Bragg, NC USA
Registered: Apr 2005
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posted 04-14-2005 01:19 PM
   
I'm building a 74 Ranchero Q code 351CJ One of the previous owners had taken off the CJ heads and put a miss matched pair on a 2V on the right bank and M on the left. I have just purchased a pair of 2V Aussie heads with the 10 degree retainers, wire lock grooves, and a port job from Powerheads.com. I haven't been able to tear the engine down so I don't know what, if any, machine work has been done to the block. I plan to make the engine a 392 stroker, and hope to run low 12's high 11's on and still be streetable. any suggestions about the intake, carb, cam and anything else would be greatly appreciated. I'm currently running a small block C6 trans and I beleive a 9" with 3.25 gears. Thanks Biv
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kid vishus
Gearhead Posts: 6405
From: middle of NC
Registered: Oct 2000
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posted 04-14-2005 02:02 PM
Here's my opinion, on a 392 stroker, those 2v heads are going to be all done making power by 52-5400 rpm. 2v heads don't flow very well, and the aussie heads flow even worse. Even ported, 2v heads still dont flow enough air to feed a big inch motor.
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RancheroSandraGayle
Gearhead Posts: 197
From: Ft Bragg, NC USA
Registered: Apr 2005
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posted 04-14-2005 02:05 PM
quote:
Originally posted by kid vishus:
Here's my opinion, on a 392 stroker, those 2v heads are going to be all done making power by 52-5400 rpm. 2v heads don't flow very well, and the aussie heads flow even worse. Even ported, 2v heads still dont flow enough air to feed a big inch motor.
ok what would the best bore stroke for this setup using these heads?
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kid vishus
Gearhead Posts: 6405
From: middle of NC
Registered: Oct 2000
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posted 04-14-2005 10:48 PM
I'm not going to be much help here. I don't like 2v heads at all in any performance application, especially one where the goal is low 12's high 11's in a heavy automobile. The easiest way to achieve this goal is a 4v headed stroker motor. It would make plenty of torque due to the longer stroke, ru on pump gas, and yet the heads will flow enough air to feed the bigger inches once the rpm gets over 5k.
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RancheroSandraGayle
Gearhead Posts: 197
From: Ft Bragg, NC USA
Registered: Apr 2005
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posted 04-18-2005 09:50 AM
quote:
Originally posted by kid vishus:
I'm not going to be much help here. I don't like 2v heads at all in any performance application, especially one where the goal is low 12's high 11's in a heavy automobile. The easiest way to achieve this goal is a 4v headed stroker motor. It would make plenty of torque due to the longer stroke, ru on pump gas, and yet the heads will flow enough air to feed the bigger inches once the rpm gets over 5k.
I will be running high test pump gas most of the time but i would like to be able to run race gas at the track. Man I just wish this deployment would hurry up so I can get back and start tearing it down to see what Block Mods I can do.
Biv ------------------
1967 Mercury Cougar 289 (Jezebel)
1974 Ford Ranchero GT 351CJ (Sandra Gayle)
1984 Ford F-150 400M
(White Lightning)
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Dad Vishus
Gearhead Posts: 920
From: Moscow, Iowa, USA
Registered: Dec 2001
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posted 04-19-2005 09:50 PM
If I was building this, I'd find a big block crate motor of at least 500 inches, make it a mild build, put a stout C6 behind it, 4.30 or so gears and go have some fun.Any smallblock is going to be a king size PITA to make do what you want it to and will cost alot. Those Rancheros of that vintage are battleships and gotta be heavy. A big block will work better.  Just my $.02 ------------------
63 Falcon 377 Cleveland stroker Flying Toilet alchohol injection. 6.19 @ 110 MPH 1/8 mile
2002 Ranger FX4 daily driver
2000 F350 PSD Crew cab dually - Like commuting in a B52!!
98 US Cargo Phantom II 28'
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32valveGT350
Gearhead Posts: 137
From: Briz Vegas, QLD, Australia
Registered: May 2003
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posted 04-19-2005 11:47 PM
quote:
Originally posted by kid vishus:
Here's my opinion, on a 392 stroker, those 2v heads are going to be all done making power by 52-5400 rpm. 2v heads don't flow very well, and the aussie heads flow even worse. Even ported, 2v heads still dont flow enough air to feed a big inch motor.
How do you figure the Aussie 2V's flow any worse than any other 2V? apart from valve shrouding (which is exacerbated when people insist on fitting 4V valves. Closed chamber 2Vs on a 392 is goign to be fairly stiff compression unless the chamber has been relieved (which helps the shrouding issue)
Really, If I was aiming for those numbers I'd sling on a set of 4V's with the intake port stuffers and filled intake manifold... Keeps your port velocities up, so you still make good bottom end, but with the topend of your average 4v head.... 4V heads are alot more common for you guys in the USA, but you guys get reamed on the pricing of all the Aussie built clevo stuff..(CHI/AFD heads and intakes, Parker funnelwebs etc...)
Of course, a BB Crate motor *would* be an easy way out..
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