Hello all I just bought a Comp Cams Extreme Energy Cam XE264HR. It spec out at 264 and 270 advertised with a 212 and 218 at .050 with .512 and .512 on a 114 LS. My question is; does anyone know the approx h.p in a 89 HO motor with 1 5/8 full legnth headers hig hflow cats and duel 2 1/4 exhaust the mufflers I am using are the Hooker Max - Flow. An idea of what to expect would be greatly appreciated.....


Thanks

 

I would "guesstimate" around 290-300 horsepower at the flywheel.I asked a Ford tech at F.R.P.P. basically the same question,except my 5.0L engine had the stock 5.0L H.O. Mustang camshaft.I was told 235-250 at the flywheel. It sounds like a nice cam you have there. The 114 degree LS is a good idea with Speed Density electronics.Your cam specs are with 1.6 ratio rockers.To get a little more power you could opt for 1.7 ratio rockers.

 

I got some numbers for you. Now, these might not be exactly what your 5.0L engine is putting out,but I plugged the info you gave into Desktop Dynos 2000 and came up with these number(at the flywheel) : peak horsepower: 294@5,000rpm, peak torque: 355 lb./ft. @ 3,500rpm. At 5,000rpm, it still has 309 lb./ft. of torque. Now your 5.0L could have a bit more,or a bit less. I didn't know what type of cylinder heads you're running,so I plugged in stock, non-ported versions(with stock valve sizes).I'm not sure on the stock cfm rating of the 5.0L truck engine's throttle body,so I plugged in 600cfm(it should be very close to this). Still, the numbers are decent vs. using the stock 5.0L H.O. camshaft. I assume that your aftermarket cam is a roller type,since that what the Mustang cam is.

 

with that cam, you can make almost 400 HP if you do something with the heads. Go with something with big valves, and an intake runner volume of around 180-200 cc. Those stock Ford heads are so terrible that you're not going to get all the power that you should have. That's exactly the one that I'm going to eventually put in my truck, I have a Motorsport roller cam short block and Windsor Jr. heads. I've used flat tappet Xtreme Energy grinds before, and they're very impressive. TK

 

I believe the stock 5.0HO engine was rated at 225HP. That seems about right because our truck 5.0's are ~185. The HO's have the same heads, just diff cam/ intake setup. Anyway, how do you log specific cam information into the dyno software? I can't seem to figure mine out. it asks for camshaft type, lifter, spec, lift, etc. But how do you put in the lobe separation, duration, etc?

 

After you're done plugging in all of the information you've chosen,go to the "toolbar" at the top left of the screen. The fifth postion has a picture of a camshaft. Just click on that, and it will open up the cam caculator.Then you can change whatever numbers you want-lift,duration,lobe seperation.

 

I change out only my cat on my chevy 305 and I get 290hp-330tq. Right out of the box.


Have tried that in a normal stock 86' 302 and tho it had a little more hp it got 8-9 mpg. Is it a 2 barrel carb or 4? Or is it injected? If it's injected it's prolly going to do real bad until you get a new chip or burn your own. Ok DeGideo, that was a stupid answer. Did they have rollers in 89? And he didn't specify that now did he?

Do you know aanything about engines?? You know that if you get a massive intake/exhaust you are going to lose the smooth idel and low emmissions.

Ok you guys are dumb, putting 351 heads on a 302 will LOWWER your compression, lol.

Ok, there is no way that a 302 pulls 600cfm right out of the box, LOL, at least not from any 1989 ford factory.

I'll tell you this man, it a hard job to pull off that iron manifold and change out the cam and for what? A few extra hp? You'd be better off sticking with the same cam and insted get a new intake and carb.

 

There you go, once again you're really showing your genious here. You think that the serious power comes from intake and carbs. Wow, you know so much that it astounds me. You come in this peaceful, insightful forum and start attacking individuals. Good job, it's what we need here. We don't know anything, we were just waiting for someone to come tell us about his chevy, and about how stupid we are.

Since you don't seem to understand this, a cam helps the engine generate more airflow, opening up the possibility of very large power gains. However, even if the cam is generating the airflow, little power will be gained because of airflow restrictions, mostly in the cylinder heads. In fact, since you're so smart, I should even have to tell you this, but for the rest of us idiots I'll go ahead and remind everybody that only about 8% of the engine's total airflow restriction comes from the intake manifold and upwards to the air filter. This is why cylinder head changes yeild so much more power than an intake manifold. I've changed intake manifolds, and felt marginal power gains, it's a cool swap, no doubt. I've also swapped aftermarket cams in and it feels like a new motor, with measureable improvements in idle quality, idle vacuum, fuel milage, and a big improvent in Torque and Power. I really think that if you would ever actually change a cam once in your life, and do it right, then you might figure out why we recommend doing it.

Once again, thanks for the personal comments, everybody appreciates it when a hot dog new member comes in and tries to stir things up with insults. Different perspectives and opinions are always welcome, and encouraged here, but you can express yourself like a mature adult or go find another website that encourages that trash. TK

 

Open Slot,

I'm sure there's some kiddie sites out there that you're kind of babble would fit right in. We're all open to listening to the experiences of our fellow Ford owners but no one is going to or has to put up with your personal attacks. Good argument is always welcome, but your name calling approach just tells me your trying to over-compensate for your true personal weakness. I'd suggest you figure it out NOW.

FYI the Windsor JR heads are 58cc heads. My stock heads on my 89 302 are 61cc. Since your such a smart guy and since we are so "dumb" and don't "know anything about engines," please tell us which head is going to yield a higher compression ratio???

Randy

 

Ford used a roller block starting in 1988 for 302 trucks,but with a flat tappet camshaft. Mustang 302 H.O. cam is a roller cam, so you'd have to convert to roller lifters to use this cam in a earlier block.The 1986 Ford 302 truck engine feature EFI.The 1986 Mustang 302 featured a 4 barrel carb.Do you know anything about Fords?Maybe you should find a Chevy site.....

 

Yes, I was rather shallow by resorting to name calling.


Ok, then explain exactly the "bottleneck" in the heads that make them so bad. The size of the valves? Because you sound as if porting is not an option. Maybe I read you wrong. Am I?

 

You can port heads, but there's a great chance that they'll get screwed up worse than they ever were. The thing is, just making the port larger doesn't necessarily increase the flow. Aftermarket heads are designed to maximize tumble port velocity, in other words, increasing the speed of the fuel mix as it rushes through the port. If you just take a grinder to your heads, you'll probably cause some serious stagnation points in the flowpath, and this will murder your low end torque and make your throttle response sluggish. Bigger isn't better, and this is no different. You're correct, larger valves will help increase flow through the ports while improving velocity, this is part of the reason why aftermarket heads are such a popular swap. Porting heads can be done successfully, but more often than not, it ends up ruining the heads, or the performance is lackluster. Aftermarket companies spend all their time researching these phenomina, that's why they make more efficient heads. TK

 

True there is a right way to do it and a wrong way.

But if the shoe fits, wear it.

 

My take on this is you both have good points. If someone is skilled enough and knows what to take off and what not to, porting can help a set of heads. But not everybody has that knowledge/skill or would take the time to acquire it. That's why Twisted Wedge and Rousch heads keep selling and commanding the prices they do.

And thanks for calming things down guys. For a minute this was starting to look like a ricer forum......

 

Thanks for the replies.. Hopefully it is a extra 20 h.p..