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willys
Non Member
Netherlands
77 Posts |
 Posted - 04 Jan 2012 : 22:11:28
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I have a question i`m planning to build a 383 mopar stroker engine and i like to no how mutch horsepower can i get out of it?
Engine specs:383hp steel crank high compression pistons 0.30 overbore 11:1 compresion highdraulic cam 520 lift roller rockers and standard 906 heads 750cfm carb
Thanks already! |
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kiwicar
Non Member
United Kingdom
28 Posts |
Posted - 05 Jan 2012 : 15:56:53
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Hi
Do you have a timing spec for the cam? Though even with a fairly drastic cam I think the heads will limit you to about 370 to 410 bhp. Without more info on the cam it is all geuss work but somewhere between 320 and 410, if the cam has more than 275 degrees at .050" you may see 420 but it will be peaky and you haven't much lift.
You can't find the budget for some aftermarket alloy Vortec heads?
Best regards
Mike
another year older not much wiser |
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willys
Non Member
Netherlands
77 Posts |
Posted - 06 Jan 2012 : 09:49:28
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Hello Mike
The cam is changed to a 612 lift and stealth heads fro 440 source maby you will have more info now?
Thanks |
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kiwicar
Non Member
United Kingdom
28 Posts |
Posted - 10 Jan 2012 : 14:35:29
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Hi Again without actual timing info it is guess work, but Carcraft have built many Mopar engines over the years, and they seem to do similar performance to Small block chevys of similar capacitys, it should breath a little better as it is effectivly a short stroke big block, but there isn't the choice of aftermarket heads. If you are using a duration in the region of 260 degrees at .05 of lift and .6" of lift then with this combination you could see 475 to 550 bhp maybe to 575 bhp if you can rev it, it really is down to the cam and assembly and detail work, will you be running a water pump? as that can soak up 25bhp, a distributor can take 15bhp to drive the list goes on. . . an external oil pump is more efficient to drive than one off the cam.
Best regards
Mike
another year older not much wiser |
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willys
Non Member
Netherlands
77 Posts |
Posted - 31 Jan 2012 : 18:12:30
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Maby change of plans i bold a 413 dodge engine and i have a 383 also dodge engine anyone have a sugestion what engine is beter to use in a fed with a .600" solid lifter cam, tunnel ram with pair of 750cfm holys
What will be the perfect combo?
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kiwicar
Non Member
United Kingdom
28 Posts |
Posted - 01 Feb 2012 : 15:46:08
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Hello again,
the ld addage "no substitute for cubes" seems to come to mind here, a 413 will produce more torque,if they are the same series engine then the 413 is just a bigger bore version of the 383. With a tunnel ram and mechanical it cam should produce a nice spread of power, just not a very subtle throttle response, depending on final timming specs for the cam.
There are several series of Mopar engines of 383 capacity and they are diferent bores and strokes.
I am not sure there is a "perfect" engine for an dragster because it is just part of the combination that makes the car. After all is it to be a car to go out and have fun in, or a competative machine to tune and perfect over the years. will you be bracket racing it and require consistancy above everything else, or are you aiming for heads up classes where finat ET is everything.
Will you use a clutch or converter, Powerglide/TH400/lenco or a manual box?
For an ET bracket car I would go for larger capacity and torque, consistant tune, a reasonably sensible stall on the torque converter and a powerglide. If it is a heads up car then possably the 383 and a lenco and clutch and try and play the capacity/ weight limits to get a good combination.
Best regards
Mike
another year older not much wiser |
Edited by - kiwicar on 01 Feb 2012 15:54:49 |
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willys
Non Member
Netherlands
77 Posts |
Posted - 01 Feb 2012 : 20:21:30
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Hello Mike
It`s gone be the 413ci with a tunnelram,suport by two 750cfm carbs and a Mopar performance cam 620 lift 314 duration engine runs on race feul (e85)
The tranny is a 727 torqflight
Do you have any idea how mutch hp it`s gone give (aprox)
Thanks |
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kiwicar
Non Member
United Kingdom
28 Posts |
Posted - 02 Feb 2012 : 14:56:20
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Hi
A good guess would be around the 575, 625 BHP mark, maybe a little more though if you are going E85 why not go the whole way and run it on methanol? The torque should be good and I would use lots of compression 12.5 to 13.5:1 at least but it does also depend on the heads.
Best regards
Mike
another year older not much wiser |
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383 mopar stroker engine
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