does anyone know how much h.p a 1974 351c puts out.
or know where i can find out?
THANKS

 

Need to know these things first:

1) which country are you in?
2) is it a 2v or 4v motor?

 

http://www.fomoco.com/index.asp?Dept=Resources&Tool=Textbook&Eng=13

that is for 351 2v engines

this is for 351 4v engines

http://www.fomoco.com/index.asp?Dept=Resources&Tool=Textbook&Eng=24

it covers up to 73, sorry

 

what is 2v & 4v

 

2V stands for two Venturies or a 2 barrel carb.

4V stands for four Venturies or a 4 barrel carb.

V is a tech term used by the automakers that is a little easier to express than BBL or some such abbreviation.

A venturi is the part of the carb that produces the vacuum that draws the fuel into the airstream (in simple terms).

 

its a 4v

 

In my old Chilton book it says;

net figures for a 74 351C 4V are,
horsepower 246 @ 5400 rpm
torque 312 @ 3600 rpm

 

[updated:LAST EDITED ON 21-Jul-02 AT 11:28 AM (EST)]> does anyone know how much h.p a 1974 351c puts out.
> or know where i can find out?
> THANKS

To clarify - while 2V and 4V refer to a 2 barrel or 4 barrel carb, on the Cleveland engines the 4V carbs were matched with 4V heads which had large ports and valves. The 2V carbs were matched with 2V heads which had smaller ports and valves (though still larger than most other engines). BTW - the 2V heads are the ticket for street use, since the huge 4V ports sacrifice low-end torque for high-end HP.

Does the engine in question have the factory intake and carb (Ford parts)? If so then you can pretty safely deduce whether you have the 2V or 4V heads. If you have a 4V aftermarket intake and carb, you will need to use the model number of the intake to figure out which heads you have, since the intakes are different for the 2V and 4V heads.

First of all, note that the engine specifications in Chilton and other aftermarket repair manuals are often wrong. I am citing figures from the "Ultimate American V-8 Engine DATA BOOK 1949-1974". I have compared it to other known and trusted sources and they are pretty accurate. This is a great book available from online sellers or at major bookstores and is great reading.

This book lists only one 351C 2V engine and one 351C 4V engine for 1974, the last year for the 351C. The 1974 351C 2V is listed as 163 HP at 4200 RPM, and torque is 278 FP at 2000 RPM with compression of 8:1. The 1974 351C 4V is listed as 255 HP at 5600 RPM, and torque of 290 FP at 3400 RPM with compression of 7.9:1.

Lastly - note that you should take HP ratings with a grain of salt starting in 1972. That year the manufacturers were told to quote net HP at the rear wheels vs. earlier ratings at the flywheel. Net ratings are not any less accurate but at that point in automotive history, manufacturers could read the writing on the wall - the performace era was over at least for a while. The tree huggers were looming, and the fuel crisis was imminent. So - manufacturers were known to fudge HP ratings downward to further appease their detractors. The engines still ran strong, even if they looked weak on paper...

 

Good answer!

Todd

 

THANKS