600hp 454

If I just stuck with my current parts and 292h cam, any guesses on hp levels without nos?


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I agree the voodoo line is great but it does really boil down to personnel pref. Even though the voodoo line is a great one. We actually used lunati and erson 4-7 swap big block solid cams. Then again its preferance. Ive seen that the torque curve is pretty awesome on the 4-7 but then again its preferance, Solids are good cams lifters are pretty spendy. The machine work that was quoted was right on in my opinion. The machine work on mine was pretty close to that also. The torque plate is cheap insurance on a performance engine just to make sure everything is right. As for the 600 horse out of a 454, in my own opinion it definately can be done. The heads and the cam are the main ingreadients. match them right and they'll work hard for you. As for compression were are making 700+ on pumps, 10.25 compression and streetable but its due to custom cam monster heads and money money. Also a 504 stroker kit. But on the bottle should be no problem. Just use arp bolts forged pistons and the 781 heads are great production heads and yieldgood numbers if there worked over a bunch.I think if work your heads right and talk to a good cam guy prefer solid but you know. you can make this happen. Valve timing is the secret to power. Still depends on head work and intake carb selection, but it should run 450 at least i think would like to hear other opinions on this though still to many variables for me to give a real good estimation really need flow numbers etc. Oh yeah the 700+ is on the carb no bottle all naturallly aspirated

I would guess this combo to make around 400-450 hp.The roller gear is fairly expensive,$ 350 for a cam,600-700 for lifters,you will need a cam button,thrust washer or something similar to go in between the upper timing gear & the block,good pushrods,I use the Trend 1 peice 3/8 0.080 thick ones.With the lack of certain additives in todays oils there is a greater chance of flat tappet cams not living long due to lobes going flat,which is why I use roller gear.
Guy

To give you an idea of what it takes to make big numbers,heres my build;custom ground solid roller cam,243/249 duration @ 0.050,.668 lift,on a 112 degree lobe seperation angle,Brodix Race Rite rectangular port heads with the CNC combustion chamber polish option,Weiand Stealth dual plane intake,Mighty Demon 800 annular booster carb,2 inch Hooker headers,10.0:1 cr with forged pistons,all new ARP fasteners,and all the machine work I listed earlier.I also used the Isky EZ Roll lifters which have no needle bearings,and a set of Crane Gold roller rockers.On whats considered a conservative dyno,it made max torque of 512 ft.lbs @ 3900 rpm and max hp of 550 @ 6300 rpm.I designed this combo to have a nice flat torque curve and some good top end power,and it delivers.
Guy

My current set up consists of course my 292h magnum cam, holley 850, stealth intake, and the 781 heads with big valves and port and polish. I'm hoping this combo will give me a solid 500 horsepower before the bottle.

What do you guys think about the XE294h hradraulic cam? It got soome extra lift and duration. I'm thinking 600hp is gonna be a little much for me to shoot for on the street. This is going to be going in a strip/restmod 67 chevelle that won't see drag duty.
I also found a good place to buy procomp aluminum heads. They're around 900 dollars a set fully assembled. Do you think oval or rectangular is a better way to go; this is going to be a street driven car? Both have 2.25 1.88 valves.

If you are set up right (good tune, good machine work, good assembly, good exhaust, ect). I would guess your 454 should make between 500 and 520 hp at the crank.

http://www.corvettefever.com/techar...ting/index.html

How are the hookers holding up? Im looking into some headers for this 504 and was interested in hookers but was told the flange was pretty light and prone to warping, I checked in lemons headers and the flange is 3-8 thick but there alot more expensive. I need 2.25 primary's in a trans am application(used to be a 454 block) There hard to find in that size yube in this application but you could by two pairs of hookers for the price of one lemons but They say lemons dont warp. any info would be greatly appreciated!

If the heads your talking about are the pro comp heads I suggested, also ask them about there roller rockers that are patterned after early jessels. There good stuff and great price. For a street car that will never see drags you'll have plenty of motor to show the car off with. In my opinion and this is just my opinion.

This is just my opinion but I think that the oval port are fantastic heads. Especially in a car that will rarely see high rpm's. Or builder here has a couple dyno mules 10.25 compression pump gas with oval's that make 650 horse but do it at a manageable rpm. If your spinning 6000-7000 or more then rec ports are better. Again this is just my opinion. Also its a money issue, in order to spin a big block hard the more money you have to spend so if your budget minded and street more than strip i myself would stay with oval ports for the torque at lower rpm's and affordability-durability, at a descent price. The engine we've just about completed at 700 horse has took alot of odd jobs and saving and scrimping, which is cool but Im a construction worker and if it blows up it'll be along time before I can save enough to put it back together, so sometimes affordability is the way to go according to your wallet instead of like me going out to far to be able to fix anything when problems arise. But in my opinion you only live once!!!!!!

The Hooker seem to be holding up very well,the flange is quite thick,although I cant give you a measurement at the moment.I had to grind a couple of places on the flange to clear a couple of head bolts,and theres 2 plugs that needed a "custom made " wrench in order to get them tight.
Guy

I appreciate the info. I think I'll give them a try and see what happens.

Hey 67 Chevelle 454,

Are you aware Comp Cams has a FREE dyno sim program on their website? It is user friendly & you can play around w/various combinations to get to your 600 HP goal.

Good Luck!
Mike.