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View Full Version : Power and torque of old V8 Falcons.



blackbart
13-05-02, 06:52 PM
Does anyboy have any figures on the power and torque put out by old carby V8 Falcon's? 302's and 351's. Standard that is.

Like XB's had 302's which made: XXX and 351's that made: XXX etc.

Thanks.:)

HoonBoy
13-05-02, 07:01 PM
A 351 4V as fitted to a 74 Landau has 290 BHP at 5000 rpm and 514 NMat 3200 rpm.

AFAIK it's the same engine as an XA-XB GT

howy
13-05-02, 07:21 PM
I hate to disappoint, but the Landau is a 2V engine with a 4 barrel carby.
2V and 4V refer to the type of cylinder head. 4V's have much larger valves and ports and also larger intake and exhaust manifolds.

HoonBoy
13-05-02, 08:28 PM
howy, I was going from the original Ford LTD-Ford Landau Owners Manual, it says 351-4V for engine...

howy
13-05-02, 08:33 PM
It probably says the same thing on the air cleaner, that's what Ford called them. But it's not a true 4V Cleveland that came in the GT's. It's a completely different motor. It's a 2V Cleveland with a 4 barrel (4V) carby.

HoonBoy
13-05-02, 08:53 PM
OK now I'm confused. Ford call it a 4V but it isn't a 4V???

blackbart
13-05-02, 09:16 PM
AHEM! Hijack anyone?:D

Agent86
14-05-02, 10:21 AM
i believe that the Xc 302 had around 147 KW and the 351 had about 154KW.

thats according to the service manual from ford.
the 4V part is for 4 Venturi (each 'Barrel' of the carb is 1 venturi)

Danny

Sturmovik
14-05-02, 12:08 PM
Yeah the engine code in for the 351 Landaus was 'T', the GTs had the code 'H' (High Output)

InsaneVL
14-05-02, 08:41 PM
Originally posted by maddnez
i believe that the Xc 302 had around 147 KW and the 351 had about 154KW.

thats according to the service manual from ford.
the 4V part is for 4 Venturi (each 'Barrel' of the carb is 1 venturi)

Danny

bloody hell... 49ci difference for 7kw extra...

blackbart
15-05-02, 08:45 PM
Does anyone have an old (back to 70's) tune and lube guide that they could quickly grab some power and torque figures out of?

Sturmovik
16-05-02, 12:32 AM
Ok these are the figures that I have dug up, not sure how accurate they are, sound about right though?

Pre emissions (XA-XB)
302C 193Kw/481Nm
351C 178Kw/413Nm

Post Emissions (XC)
302C 147Kw/428Nm
351C 134Kw/356Nm

blackbart
16-05-02, 04:46 PM
What model would an 83 be?

Fangio
16-05-02, 05:56 PM
Here are some figures from a Ford Falcon history book I have:

XY

302 2V
164kW@4600
407Nm@2600

351 2V
186kW@4500
481Nm@2600

351 GT
224kW@5400
515Nm@3400

351 GTHO
291kW@5400
515Nm@3400

XA & XB

302
179kW@5000
414Nm@2600

351 2V
194kW@4600
481Nm@2600

351 4V
224Kw@5400
515Nm@3400

XC

302 4V
151Kw@4600
364Nm@3000

351 4V
162kW@4500
429Nm@2700

Note that 2V and 4V refer to the carby and not the type of heads. Some of these figures are a bit dodgy though. Early XA GTs had close chamber big port 4V heads and later XB GTs had open chamber small port 2V heads so there is no way they were making the same power.

blackbart
16-05-02, 06:48 PM
Originally posted by Fangio


351 GTHO
291kW@5400
515Nm@3400



Nice.:D Wonder how close it was to that.

What model was current in 1983?

Fangio
16-05-02, 08:16 PM
'83 would be the XE

302 4V

140kW@4500
344Nm@3200

351 4V
149kW@4300
415Nm@3000

Acceleration times for the 351 4 speed were:

0-100 8.9
400m 16.3

My stock SSS Pulsar does it in 9.4 and 16.5 so it goes to show:

a. How much modern technology can wring out of an engine.
b. How poxy carbed pollution controlled V8s had become.

blackbart
17-05-02, 06:45 PM
In what year/model did they start using electronic ignition?

Fangio
17-05-02, 09:18 PM
Is this some kind of Ford trivia contest? Do I win a prize if I get ten out of ten correct?

Pretty sure it was the XC in 1976 but for 351 engines only. I just happen to own a factory 351 XC and have never seen an XB with electronic ignition.

C0V3R
19-05-02, 02:23 AM
Ive got a nice MSD ignition system in mine (pro billet dist and MSD 6a). Fortunately I didnt pay for it ;) (came with the car).

One of the main reason the figures are so shit, is the stock exhaust manifolds. They ssssssssssssssssssssuccccccccccccccccccccccccckkkk kkkkkkkkkkkkkkkkkkkkk bigtime. The 289/302/351 had some of histories most constrictive exhaust manifolds in existance. You can seriously get in the realm of 30-60 hp increase by getting extractors alone on a crappy normal exhaust depending on the rest of the engine.

Imagine a manifold where the ports are smaller than the head outlets, and the final outlet size is essentially the same as any 1 of the 4 inlets! They suck. Alot. You can get significant increases in power with a few small mods (alloy edelbrock etc intakes, high energy ignition, a cam and extractors.)

If you want to ask specifics you could try www.fordforums.com

C0V3R
19-05-02, 02:26 AM
Also, dont touch anything with pollution control crap. (XC onwards I think). The pollution control junk just seems to make less power with more fuel, and it makes the engine bay ugly.