Why isn't the 351C more popular in Cobras?

[Manowar]

http://www.theengineshop.com/prods_p...rateEngine.htm

Scoop clearance may be an issue on some Cobras unless modified.

[lovehamr]

Manowar,
Now this gives me a stiffy!!!!!!!!!!!!


Steve

[Manowar]

Ah,
Your avatar accomplishes the same phenomenon....

[rdorman]

A 460 cubic inch, 375 pound (not a typo and weight, not foot pounds... that is 610), 625 HP, pump gas street tune 'cleveland'... now there is some wood!

[Ant]

Going by the 375Ibs weight for the alloy 9.5" deck cleveland and big cubes 625bhp, that must make my alloy Yates headed windsor with 9.2" deck block lighter, I wonder what they weighing I guess complete from Carb to sump, with water pump and none of the other ancilliaries like alternater etc?

My engine is 373 can run to 8000rpm, puts out 675bhp at 7200rpm and 566ft Ibs torque at 5500rpm, I hope its going to take a bit of beating!!!!!

[Excaliber]

Of course any engine run to 8000 IS going to take a beating, no way around that. It's just a matter of how many times it can do that before something lets go, maybe lots of time! Starting perhaps with valve springs? Not being negative, just recognizing that thats some lofty rpms!

[cobrabobby]

Lovehmr,
I do think your Clevor is too cool for words. By the way,
those studded Motorsports valve covers are getting very
rare. Very pricy on Ebay if you can find a pair. That 372
would sure look fine in a Cobra engine bay. I'm jealous!!
Bob T.

[SFM5S159]

I think that with any engine comparison we need to look at the intended purpose. Max HP numbers don't do much for me, unless we are talking about a race car/motor. If most of you guys are running your cars on the street, then low to mid range tourqe and HP is what I would be looking at. My brother has a Boss 351 in a Boss 302 car and on the street, it does not perform too well. Get that thing to 5000 RPM and look out!
I'm building a 428 SCJ for a GT500 and I had to resist going to a .500 lift cam. The reality is that for my street car, a mild cam with good numbers up to say 5500 RPM is the power range I want. Will my FE rev to 7000 RPM and make great power? No, but that is fine by me. Why spend all the money for a HP range that will seldom be seen by most of us on the street?

So that being said, will you get good low and mid range numbers out of a cleveland? Street driven, the cleveland may not be the best choice.
For a race motor, I like it!
MC

[rdorman]

I hear you and to a certain extent completely agree. But lets do talk torque. The man'o'war engine is putting out well over 500 ft lbs down in the 3's and peaks at 4300. My 351 4V motor makes 90% of torque from 2000 (where they started recording) up past 5500. Nice and flat if you ask me. Sure, it really comes on strong in the last bit of RPM but it is a terrific driving motor in my Cobra. Tons of torque in a Cobra could be considered a liability in a car that is so traction limited (in general with weight, tire choices and IRS factors like mine). For a 'heavy' solid axle car like a Mustang, I would definiately be looking for more torque. I have owned a number of 1970 and prior models.

[DoubleR]

Hey rdorman... I have a Crower 15381 in my cleveland. It does not kick in troque until well past 3K rpm. Then watch out. The lift specs are .592 / .607 with duration of 298 / 306.

[Ant]

I think my message was worded wrong by "beating" I meant, hard to get past!!!!

Regarding rpms I couldnt agree more with you guys, revs kill engines, and okay my engine has got heaps of hp and torque, albeit higher up in the range, I am hoping there is a bit down around 4000rpm, but I intend on keeping the revs down even when racing to around 7000 max, as 8000rpm is a bit lofty, and reduces the life of parts.
Maybe in a few more years when I have racing out of my system a bit, I may look at a bigger cube less rev combination for this car, so it can be more streetable! When my engine or the parts came available, the cost wasnt a lot more for some real good race bits, and I seemed to ignore the fact that this is a dual purpose car to be used on the road.....!

[Jac Mac]

[quote=Ant]I think my message was worded wrong by "beating" I meant, hard to get past!

First you have to get in Front!

Jac Mac

[Ant]

Jac Mac,

Dreams are free mate, I will down size it to hard to get in front in a straight line compared to a street cobra!
When you throw in the a few corners it makes it more difficult, especially with some of the highly modified stuff out there, like the quite heavy Blue XW/XY Falcon with the very very strong 351C in the Super Gts!!!!!!!

[Jac Mac]

Yep that car has got some serious mumbo, TVR can just about foot it with him but F/glass comes off second best when you get into the ' Rubbing's Racing' stuff. I look forward to your track debut with your new toy. To the USA guys that dont have a clue what we are on about, imagine a mixed field like this- 70 Boss 302 Mustang, 911 Porsche,BMW M3, 74 Camaro( 7litre+), Corvettes,72 GTHO Falcon(Aust) 65> Mustang Fastbacks GW equipped, Turbo Sierras, Cologne Capri's, Turbo Nissan's, Holden Monaro's all being driven like there is no tomorrow. The Falcon seemed to have the measure of most this year, but not by much. Sorry for the thread drift ,but as a few of these cars are 351c powered there must be some life in the old 335 series yet.

Jac Mac