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get hold of rich @ firecore wires (a moparts member and sponser) and get his combo and info. his car is close to 4000 lbs and he was clicking off 10.85s at norwalk this year @ the mopar event. i can't give you #s on mine but desk-top dyno said 625 hp. that's a .020 over 426 with stock stroke, mp alum heads with port clean up only with a crane hyd roller with 564 lift intake 555 lift exhaust (advertised lift, i got a little more with different ratio rockers), duration is 236 int and 240 ex @ 50. small 2" hedman headers with a new mp crossram and 2 holley 770 carbs. starts easy and other then idleing a bit high (900 rpm) it runs and drives nice. i but 450 miles on it from aug to oct and had very few issues. even got 9 mpg if i kept my foot out of it. most guys tend to think on a street car a single carb will make more hp. dave

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Thanks for the info this is what i am looking for my firend ( DON"T ) have the free cash to stroke it so he is leaving it all factory specs and getting the power other way but yet keeping the comp down for street gas i know someone out here has built one with all the motor parts i find it hard not to.!!

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get hold of rich @ firecore wires (a moparts member and sponser) and get his combo and info. his car is close to 4000 lbs and he was clicking off 10.85s at norwalk this year @ the mopar event. i can't give you #s on mine but desk-top dyno said 625 hp. that's a .020 over 426 with stock stroke, mp alum heads with port clean up only with a crane hyd roller with 564 lift intake 555 lift exhaust (advertised lift, i got a little more with different ratio rockers), duration is 236 int and 240 ex @ 50. small 2" hedman headers with a new mp crossram and 2 holley 770 carbs. starts easy and other then idleing a bit high (900 rpm) it runs and drives nice. i but 450 miles on it from aug to oct and had very few issues. even got 9 mpg if i kept my foot out of it. most guys tend to think on a street car a single carb will make more hp. dave

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I believe his is stroked to 528 if I am not mistaken. Getting 650 out of a stockish hemi will require some money in the heads and probably more than the typical stroker....But if you have all the parts, get a hold of Ray Barton, RBRE, Tim Banning, FHO, or one of the other real good hemi builders out there and pick their brains a little. I have seen 800hp out of a +.030" hemi, but at 12.5:1 and lots of cam and head flow. 650 is doable on pump, but not cheap. I ran a tunnel ram on my 600hp hemi on the street, and still do. They like to breath. I think my next one after this 484 is going to be a 604 monster...Saw one at the drags this year, just awesome.

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get hold of rich @ firecore wires (a moparts member and sponser) and get his combo and info. his car is close to 4000 lbs and he was clicking off 10.85s at norwalk this year @ the mopar event. i can't give you #s on mine but desk-top dyno said 625 hp. that's a .020 over 426 with stock stroke, mp alum heads with port clean up only with a crane hyd roller with 564 lift intake 555 lift exhaust (advertised lift, i got a little more with different ratio rockers), duration is 236 int and 240 ex @ 50. small 2" hedman headers with a new mp crossram and 2 holley 770 carbs. starts easy and other then idleing a bit high (900 rpm) it runs and drives nice. i but 450 miles on it from aug to oct and had very few issues. even got 9 mpg if i kept my foot out of it. most guys tend to think on a street car a single carb will make more hp. dave

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I would tend to think it would be pretty hard to get 600 - 650hp out of a stock stroke street hemi while still being streetable and able to run on pump swill. A factory race hemi grossed out in the 550ish range with headers IIRC.

I think your friend needs to;

- pony up and stroke it
- give up being streetable and pump gas friendly
or
- lower hp expectations to something more reasonable; maybe 500 - 550hp

Dave

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If he could he would.!
I just don't see how he can't get that hp. ?? i have a 440 stock stroke .040 over stock crank & rods with cheap kb pistons & Indy SR head with a very mild port job M-1 intake no port work at all & 950 carb with a solid lift cam 282/292 & 540/559 lift with 1.6 Indy roller rockers & TTI headers and i am making 580 hp & Tq at the same & i had it Dynoed so its not a guess HP motor.!

*** So you are saying a hemi with better heads & bigger Valves better rod & pistons and a roller cam set up and head work & intake work with good headers won't out do mine. ?? ***

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I would tend to think it would be pretty hard to get 600 - 650hp out of a stock stroke street hemi while still being streetable and able to run on pump swill. A factory race hemi grossed out in the 550ish range with headers IIRC.

I think your friend needs to;

- pony up and stroke it
- give up being streetable and pump gas friendly
or
- lower hp expectations to something more reasonable; maybe 500 - 550hp

Dave

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If he could he would.!
I just don't see how he can't get that hp. ?? i have a 440 stock stroke .040 over stock crank & rods with cheap kb pistons & Indy SR head with a very mild port job M-1 intake no port work at all & 950 carb with a solid lift cam 282/292 & 540/559 lift with 1.6 Indy roller rockers & TTI headers and i am making 580 hp & Tq at the same & i had it Dynoed so its not a guess HP motor.!

*** So you are saying a hemi with better heads & bigger Valves better rod & pistons and a roller cam set up and head work & intake work with good headers won't out do mine. ?? ***

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I would tend to think it would be pretty hard to get 600 - 650hp out of a stock stroke street hemi while still being streetable and able to run on pump swill. A factory race hemi grossed out in the 550ish range with headers IIRC.

I think your friend needs to;

- pony up and stroke it
- give up being streetable and pump gas friendly
or
- lower hp expectations to something more reasonable; maybe 500 - 550hp

Dave

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Of course he can make his 600-650hp......but if he want's to make it out of a 426cu in engine running around 10:1 so he can use garbage fuel, it is going to have to be more radical than I would consider "streetable".....YOUR definition of streetable may be different.

in almost EVERY example given in this thread, the motor is larger than 426 cu in......because stroking it is the cheapest and easiest way to get the hp AND have the engine remain relatively tame.


Dave

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My only 426 +.030 made about 580-590hp and was very streetable. The best street intake we have tested to date is the Ray Barton single plane...and around a 950 carb. The cam and heads will cost more than the stroker crank to make the hp and torque your looking for. I suggest going the stroker route....

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.....the voice of experience.

Dave

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[..My engine builder went the reliable as the shop truck route on the cam with the same size engine as mine, 10:1 compression instead of my 11.6:1 and stock flowing heads, vs. my 400cfm heads, and he is right at 657hp at 484 cubes.

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