Edelbrock 4.0 Aluminum Cylinder Head. Torque!!
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- Опубликовано: 18 сен 2024
- Fits 87-06 in 6 cylinder jeeps. Nice Hp / Torque Gains from factory. More order details here -
tdmotion.com/p... 561-427-8285. Offered with ARP Head Bolts. *Suggested for Stroker Engines or used with Power Adders. Cylinder head replacement by itself will realize marginal gains.
![We Test 5 Jeep Cylinder Heads [How Much is Porting Worth?]](http://i.ytimg.com/vi/qPnC58wK6Lw/mqdefault.jpg)
Not as much HP with just the cylinder head by itself but with larger profile cam, induction, exhaust an stroking engine you’ll notice a nice power gain!
where's the before and after dyno HP and torque curves to prove the claimed '50+' HP and '60+' torque increases? i am a bit skeptical until the numbers are shown. does edelbrock provide these numbers?
It should be 160+ hp 60hp is under rated
@@dannyantrim3546 bahahahahahaha
Is the torque spec different for the head bolts on this aluminum head vs. the iron head.
I do not beleive you pick up 50+ HP
Probably won't unless its stroked out and better cam, exhaust.
I’m just a shade tree mechanic, 1:12 will this style of combustion chamber increase compression?
I'm about to prove if these claims are correct. I've Dyno'ed my 258 (Nutter Bypass and custom Weber jetting), came to 103.7 HP/188.6 TQ on 30's.
Got a 7120 on there now, should Dyno later this month, and then an Edelbrock which hopefully will ship this month. I'll report back.
No cam yet, will do that after the Edelbrock.
Hello how did the engine combo do??
Update?
Sorry guys, wiped my cam while it was on, so couldn't Dyno it. Now it is going on a Stroker build that is still at the Machinist shop.
But by Butt Dyno? Lol, nothing that great.
I'm using it on the stroker to bump
timing a bit, and I have it, that's all.
For the $2k? No, can't say it's worth it, TBH. I currently have a 4.0.NVH junkyard engine with Clifford Intake and Holley 390 DP with DUI Diz, threw down 158 HP/215 TQ on 31's in 3rd gear. Spend the money there, IMHO.
I do not understand how a head swap will change the cruising RPM. Did you swap gears? I built a 4.7 stroker for my Jeep with an "rv" cam. It makes 310 lb/ft torque (dynoed) After reinstalling it in my Jeep, the cruising rpm did not change one bit. Care to explain?
Its the sum of the parts - High flow air inlet, TBI, Cylinder head, power band of the Camshaft, less friction Internals, Roller Rockers, exhaust etc. When using the proper recipe of parts the engine does not need to turn as high RPMs than that of a factory engine at the same speed.. Of course if were dealing with a very aggressive engine with a very hot cam , high compression that can change power band and the gas mileage. Finding the balance between power and economy is achievable but its a fine line. Changing the Rear End Gear Ratio and or Tire Size definitely helps too.
I agree. To change the relationship between the speed of the axles and the speed of the engine, in a certain gear, one must change the final drive ratio. Maybe they meant that they could put a taller final drive in it to lower the RPM of the engine at a certain speed, because of the torque gain.
has anyone dyno'd this head? What about long term daily driver use? Thank you!
Have this Head on our own Shop Vehicle. Runs great! Reliable, pump gas friendly. Haven't officially dyno-ed engine but feel a lot more torque with a very mild cam in. Fun off throttle, requires less rpms for cruising too. Go with the 4 pin 24lb injectors. Actually gets a bit better gas mileage too this way.
What after market cam could be used to compliment this head?
I honestly dont believe you will get 50 horses out of the box. You would get maybe 20 thats being generous especially on a stock cam profile. Just saying 20 because of the increase compression but thats even pushing it. Just beacuse the intake ports are bigger doesnt mean that stock came and stock intake is gonna hang. The motor will fall on its face at the higher RPMs
Yes in order to get 50 + HP. It’s a combination between stroking engine, cam , exhaust, compression an of course the alum head. Not just bolting head in place of a factory engine do it. Well be doing an updAted video that explains this
Valves are stock size... not larger. And not a 50hp increase onto a stock motor... unless you have the dyno numbers for that?
If you are going to the trouble of making an alloy head for the 4.0. Why would you not make it crossflow. Does not make sense!
RobWillmot It makes perfect sence if you know anything about inline jeep engines, dist/ cam sync location, underhood packaging, emission certification, the average consumer, profit, etc ...
I can see your point but it is not impossiable. Make it overhead cam and mount the dis up the front
RobWillmot Anything is possible if you want to lose money. The inline jeep engines have a balence/frequency problem that keeps the redline below 5200..There is no reason to spend millions designing a high rpm head for an engine that can not turn high rpms reliably.
Edlelbrock will make millions with this head by having an aluminum replacment for crack prone stock heads and offering the gear head/ stroker owner hp and weight savings..
A head like you are talking about would cost millions to design and produce, and they would cost so much no one could afford them..
Yes you are right. What balance problem do they have? I have a 96 Xj cherokee I baught new and changed two waterpumps in over 20 years. No other problems. The only thing in city driving its not good on fuel.
RobWillmot No balence problems you will ever encounter without major modifications... I've built several jeep strokers and spent a lot of time researching jeep inline engines. Somewhere along the way I read , or watched , a chrysler engineer, or jeep engine guru, explain the 5150 RPM redline on the 4.0 engine. As I recall... there is a point around 5250 RPMs where they have a extremly bad balence or harmonic frequency issue..You can rev past it, you can come back down below it, but if you accidently hang out at that RPM your shit is coming apart violently...
I'm searching for the link right now...
$1900 for one head? Nope...
1800$😂