351C Rebuild Questions
Thread Starter
|
New User
Joined: Mar 2003
Posts: 14
Likes: 0
351C Rebuild Questions
I've got a 73' 351 C 4 bolt main block and a set of 2V heads with 2.04 / 1.66 valves and open chambers. I want to rebuild this engine and use it in my 94' F150. i don't think the 351s had much low end torqe so I would like to put a 396 stroker kit and a cam lifter spring set to get the most out of this engine at the low to mid rpm range. I'd like to end up at about 10 to 1 compression. Does any have any recomendations as far as cam or 2 or 4 bbl carb? Anybody familiar with the stroker kit and how the 396s perform?
Posting Guru
Joined: Aug 2000
Posts: 2,416
Likes: 4
From: PacNW
351C Rebuild Questions
IMNSHO I wouldn't spend the money for the stroker kit. It's true that without the additional stroke length you won't have as much torque at the bottom but the lack of bottom end torque in the 351C was mainly limited to the 351C with 4V heads (although in my personal experience that's debatable). I think you'd be better off spending your money to put the larger 4V valves in the 2V heads, get a good dual pattern cam with more lift & duration on the exhaust, install a good dual plane intake & 600+ CFM carb and spend the rest of the money at the dyno shop getting the carb tuned right and the advance curved.
Senior User
Joined: Jan 2003
Posts: 217
Likes: 0
From: Saraland AL
351C Rebuild Questions
You stated this is a 94 F150. It would have EFI from the factory. If you go to a carb, you will need to change fuel pump, filter, maybe fuel tank(don't really know) and some other fuel system parts.
I've never done it. Maybe someone can shed more light on the subject.
I've never done it. Maybe someone can shed more light on the subject.
Trending Topics
Thread Starter
|
New User
Joined: Mar 2003
Posts: 14
Likes: 0
351C Rebuild Questions
I don't think the EFI manifold off the factory 302 would bolt up and I imagine one for the 351 would be kinda expensive.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Thread Starter
|
New User
Joined: Mar 2003
Posts: 14
Likes: 0
351C Rebuild Questions
$ 750 is easy . How about the rest of the EFI system ? How much of my stuff could I use and how much would have to be new ?A 396 Cleaveland at 9.5 or 10 to 1 sounds like it might have a little juice !
More Turbo
Joined: Mar 2003
Posts: 578
Likes: 1
From: Green Bay Wi
351C Rebuild Questions
First off for what you would get for that 4blt block you could prolly buy a good 460.But if your heart is in a <a href="http://www.motorhaven.com/">351c </a>you can do some really wicked things with a sock C The rods are good for about 7,000 rpm granted you have to put a good set of bolts to em(like ARP'S or something)2V heads work well at 1500-5500 RPM the 4V head just gets working around 2500 RPM I would say if your going to a 4v get a 292 cam or bigger, single plane intake ,750/780 vac carb and a high stall convert.(Due to the fact they have little or no bottom end under 2500) I would also argue that a 2blt block is just as strong if not stronger than a 4blt if you would put main studs to the 2blt block.
Thread Starter
|
New User
Joined: Mar 2003
Posts: 14
Likes: 0
351C Rebuild Questions
I thought about a <a href="http://www.motorhaven.com/">460 </a>but I'd have to replace the tranny with one for a big block . I think the <a href="http://www.motorhaven.com/">351c </a>will bolt right in since it shares the same bell housing pattern and motor mounts as the <a href="http://www.motorhaven.com/">302 </a>and 351 W.How about a 351 C with a396 Stroker kit with 10 to 1 comp., 2V heads with 2.19 / 1.66 valves a good RV cam , lifter , and spring set to maximize power in the 1500 - 3500 rpm range and a quality daul plane intake and 700 cfm carb.and electronic ign. along with headers and dual flowmasters. Anybody got any thoughts on the HP and Torque gains over the stock 94' 5.0 EFI
Freshman User
Joined: Dec 2002
Posts: 38
Likes: 0
From: SE Michigan
351C Rebuild Questions
Sounds to me like you want low-mid-range performance, not max high RPM HP.
In that case, your 9-9.5 CR is good.
I agree with an earlier poster on the 292 deg. duration cam.
I agree with a couple earlier posters and disagree with a few others on the intake manifold. You need a dual plane manifold for optimum mid-range performance, single planes are best for high RPM and are less than optimum for mid-range. In fact, the stock 4V intake is quite good up thru about 5000 RPM if you match the ports to the heads.
As for a carb, do not exceed 650 CFM, and you'd probably be happiest with a 600 dbl pumper.
Don't go any bigger on header dia. than 1 7/8", and run them into 2.5" dual exhaust with a cross tube just behind the collectors.
That's what I'd do anyway...
Tom
In that case, your 9-9.5 CR is good.
I agree with an earlier poster on the 292 deg. duration cam.
I agree with a couple earlier posters and disagree with a few others on the intake manifold. You need a dual plane manifold for optimum mid-range performance, single planes are best for high RPM and are less than optimum for mid-range. In fact, the stock 4V intake is quite good up thru about 5000 RPM if you match the ports to the heads.
As for a carb, do not exceed 650 CFM, and you'd probably be happiest with a 600 dbl pumper.
Don't go any bigger on header dia. than 1 7/8", and run them into 2.5" dual exhaust with a cross tube just behind the collectors.
That's what I'd do anyway...
Tom