2013 Cobra Jet Specs are up
 

NHRA posted the 2013 Cobra Jet specs up yesterday. Enjoy

302 NA 350HP/3017#
302 SC 500HP/3170#
363 NA 330HP/3100#
427 NA 425HP/3150#

Re: 2013 Cobra Jet Specs are up
 

Have you looked at any of the specs? The 363 should be a killer combo with that ridiculous rating of 330.

Re: 2013 Cobra Jet Specs are up
 

The 363 basically the same as the 2010 CJ 352/285HP(currently factored 302). It has a slightly bigger bore combined with 0 deck block bumped the compression up to 11.5 it appears in the tech specs.

The one that surprised me(because I'm building one lol) is the 2.9/5.0 SCJ. SS only. I was hoping to do some battle with the 2.9/5.3 COPO. Dang well there should be a couple step up to SS before long given their potential and specs.

Re: 2013 Cobra Jet Specs are up
 

Not nearly as soft as the '10-'12 combo's. Which should make everyone but the ones building the cars happy. I'm kind of glad I cancelled my order for the Competition Kit I was going to build. Which I was going to build as a '10-'12 352/285 stick combo instead of the 5.0/350 anyway. I know the new 5.0 is a bada$$ motor but to my knowledge the NA version is factored right out of the box harder cubic inch to hp than any other engine in history. Correct me if I'm wrong. I don't know if Ford is being more straight up when asking for the ratings or if NHRA is finally taking a stand? 302/350 = .86 cubic inch per hp factored. Someone please show me a NA combo that came out of the box factored this hard. To be honest all for of the combo are factored hard in my opinion.

Re: 2013 Cobra Jet Specs are up
 

Ok... Just running the numbers again.

The 302 (5.0) NA 3017/350 = 8.62 natural B car until it gets 5 hp.
3017/355 = 8.49 making it a natural A car. I don't see this combo competing with '10 428 combo in A.

The 363 NA combo. 3100/330 = 9.39 making it a natural C car. Probably the best combo they've got here. It would need 15 hp to be a natural B car.

The 427 NA combo. 3150/425 = 7.41 making it a natural BB car. In my personal opinion this combo would not run with the '10 428 combo.

The 5.0 SC combo. Well I'm not a SC kind of guy so to speak but coming out of the box at 500 hp is pretty steep in my opinion as well. I would really like to know what happened between Ford and NHRA here. I guess Ford had to throw them a bone?

The '10 352 combo 3130/285 = 10.98 making it a natural F car until it gets hit 13hp to 298 hp then its a natural E car.

The '10 428 combo 3305/375 = 8.81 making it a natural B unit it gets14hp to 389 then it will be a natural A car.

So you've the '13 5.0 NA version competing in B against the '10 428. I don't understand.

Re: 2013 Cobra Jet Specs are up
 

The 5.0L SC combination was mistakenly listed as SS only. I had a conference call with NHRA tech today and they are aware of it. We are looking forward to healthy competition with the other brand's SC offering in Stock.

Re: 2013 Cobra Jet Specs are up
 

These hp ratings are definitely closer than the 2010-12s were. You have to respect Ford for going in the right direction. The 363 is probably needs the most hp out of all of these, but at least it wasn't 285 like the 2010 version!

I don't know why anyone would build the 363 or 427, though, when the 2010 versions of those motors are rated so much less.

Re: 2013 Cobra Jet Specs are up
 

Great news there. Leaves me a few options then. Looking forward to all the great competition out there.

Re: 2013 Cobra Jet Specs are up
 

Cubic inch per hp the 363 is pretty close to your combo. 363/330 = 1.1 cu/hp vs. 350/325 = 1.07.

I'm sure it will eventually get hit but it looks like the best combo they've got for '13.

Re: 2013 Cobra Jet Specs are up
 

Jesse,
Did they get the pulley size correct? 3.97 upper? Lower has 8.125 for the Inner? And 7inch for Outer??? Was the drive system reconfigured from the single belt?

Re: 2013 Cobra Jet Specs are up
 

Lol ok they seem to have it fixed now.

5.0 SCJ no longer says SS only and the pulley sizes are 3.75 upper and 8in lower. Had me worried there for a little bit with all this stuff. Maybe I need to also check the valve and other specs just in case! Lol

Re: 2013 Cobra Jet Specs are up
 

I don't have the cylinder heads, intake, cam, compression, or throttle body that 363 does lol.

Re: 2013 Cobra Jet Specs are up
 

Aaaahhhhh minor details lol

Re: 2013 Cobra Jet Specs are up
 

Anyone know of anybody building a 363 ?

Re: 2013 Cobra Jet Specs are up
 

1964-65 Corvette 327 375hp = .872
1964-65 Shelby 289 325 hp = .889

FYI

If you are going to campaign, be consistent.

Re: 2013 Cobra Jet Specs are up
 

Thanks for the info Dwight I wasn't around in those days but can you tell me how many people actually campaign either of those combo's?

Re: 2013 Cobra Jet Specs are up
 

1969 AMX cross-ram SS package.
Factory rated at 340 HP, NHRA instantly made it 405 HP.
390/405= .9629.
Today it is 407 HP or .9582
Consistently campaigned for 44 years

Re: 2013 Cobra Jet Specs are up
 

Just a FYI the higher the number the softer the combo. In other words the .889 has more cube's per factored hp than the .86 of the 302/350 combo therefore the 302/350 combo is still the hardest factored N/A combo out of the box that I know of.

Re: 2013 Cobra Jet Specs are up
 

The very reason why such combos were never considered by any racer is because of the high power factor. Of course those two cars are now such expensive collertor cars that it would be difficult to consider either as a race car. However, even "in the day" those would not have been considered good choices because of the high power factor.

The new 302/350 would be tough, but this is a VERY sophisticated engine when compared to engines from the 60s. Most currently competing combinations from all makes fall into a power factor/displacement range of .75-.92. Some high performance version go as high as 1.1. Then the actual power produced is 60%-80% above the power factor. Just using that info for comparison, the 302/350 would need to make actual power north of 570. Is that possible? That's approaching 2 hp/cu in.