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Re: Need ideas for a 450HP build on my 383/ street motor?
[Re: RUMBLON]
#975519
04/20/11 01:12 PM
04/20/11 01:12 PM
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Joined: Jan 2003
Posts: 4,711
Moved to N.E. Tennessee
GomangoCuda
master
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master
Joined: Jan 2003
Posts: 4,711
Moved to N.E. Tennessee
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That changes everything. Use the 500. The compression is perfect for an aluminum head street engine. You need to find out what cam is in it. It may be OK to use. What manifold is on it? Chances are it is OK also. The rockers will be OK as long as they are not some inexpensive Chinese junk. If they are then they wouldn't have held up in a race motor either. As far as the pushrods go, he probably wants to check the length with what ever cam would be put in.
IMO you already have the right engine sitting there ready to use unless the cam is way too big.
Should be way past your Horsepower goal even with a mild street cam.
Last edited by GomangoCuda; 04/20/11 01:18 PM.
In theory, there is no difference between theory and practice. In practice, there is.
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Re: Need ideas for a 450HP build on my 383/ street motor?
[Re: GomangoCuda]
#975520
04/20/11 02:28 PM
04/20/11 02:28 PM
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Joined: Jan 2003
Posts: 9,857
Cambridge Idaho
RUMBLON
OP
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OP
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Posts: 9,857
Cambridge Idaho
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Quote:
That changes everything. Use the 500. The compression is perfect for an aluminum head street engine. You need to find out what cam is in it. It may be OK to use. What manifold is on it? Chances are it is OK also. The rockers will be OK as long as they are not some inexpensive Chinese junk. If they are then they wouldn't have held up in a race motor either. As far as the pushrods go, he probably wants to check the length with what ever cam would be put in.
IMO you already have the right engine sitting there ready to use unless the cam is way too big.
Should be way past your Horsepower goal even with a mild street cam.
OK here are a few pics.I dont think the rockers are cheap ones but then again, I am not the builder. I do want to use this motor if at all possible if its not going to cost a ton.
RUMBLON
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Re: Need ideas for a 450HP build on my 383/ street motor?
[Re: RUMBLON]
#975525
04/20/11 03:33 PM
04/20/11 03:33 PM
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Joined: Jan 2003
Posts: 4,711
Moved to N.E. Tennessee
GomangoCuda
master
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master
Joined: Jan 2003
Posts: 4,711
Moved to N.E. Tennessee
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Find out what cam is in it. There's your engine. There are more street worthy intakes out there but that one will work for now. Do you have a Carb for it? $200-$250 would get you a more street friendly intake.
Rocker arms look good enough.
In theory, there is no difference between theory and practice. In practice, there is.
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Re: Need ideas for a 450HP build on my 383/ street motor?
[Re: RemCharger]
#975527
04/20/11 08:20 PM
04/20/11 08:20 PM
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Joined: Jan 2003
Posts: 9,857
Cambridge Idaho
RUMBLON
OP
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Cambridge Idaho
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Quote:
Looks good to me  Rockers look like they're of asian descent , but if the cam isn't to heavy duty, should be ok.
Is it a roller cam? If its a solid ft, I don't see any problem running it. Check lash a few times , and let er eat. 
What would a good cam and intake be for this?
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Re: Need ideas for a 450HP build on my 383/ street motor?
[Re: RUMBLON]
#975528
04/20/11 09:06 PM
04/20/11 09:06 PM
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Joined: Feb 2003
Posts: 1,665
Milwaukee, WI
Prince_Valiant
top fuel
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top fuel
Joined: Feb 2003
Posts: 1,665
Milwaukee, WI
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I'd run a performer RPM, maybe with the divider ground down and a 2" spacer and if you're looking to stick with flat HYD, maybe go with a hughes HEH3742BL or HEH4246 (237/242 @ .050, .584/.592 lift w/ 1.6 rockers, 108 LSA or the later which is 242/246 @ .050, .592/.606, 108lsa)...that should hopefully keep cylinder pressures down so that you'd be happy with pump gas and still make PLENTY of power. The amount of low/mid range torque w/ either cam would be stupefying though. Nor would I be adverse to doing a basic 383...with a good "268" cam and tri-y headers with good AL heads it'd be a nice street combo that would certainly be enjoyable at a cruise night and smile inducing at a stoplight drag
1979 Dodge Lil' Red Express - 360 rwhp, 13.2 @ 103mph
1968 Coronet: 318, 2.76, 15.2 @ 92mph! (SOLD)
1976 Valiant: 360, 3.90, 12.90 @ 106 (SOLD)
1989 Shelby CSX #500/500
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Re: Need ideas for a 450HP build on my 383/ street motor?
[Re: RUMBLON]
#975529
04/20/11 09:06 PM
04/20/11 09:06 PM
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Joined: Aug 2003
Posts: 8,716
Baltimore/Denver
64Post
master
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master
Joined: Aug 2003
Posts: 8,716
Baltimore/Denver
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Quote:
Quote:
Looks good to me Rockers look like they're of asian descent , but if the cam isn't to heavy duty, should be ok.
Is it a roller cam? If its a solid ft, I don't see any problem running it. Check lash a few times , and let er eat.
What would a good cam and intake be for this?
You have to choose intakes wisely as hood clearance can become an issue.
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Re: Need ideas for a 450HP build on my 383/ street motor?
[Re: JohnRR]
#975531
04/20/11 11:26 PM
04/20/11 11:26 PM
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Joined: Jan 2003
Posts: 9,857
Cambridge Idaho
RUMBLON
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Cambridge Idaho
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Quote:
Run a performer RPM , find out what cam is in there and ask the builder about the rockers, if they are (insert board sponsor here) or CAT rockers TAKE THEM OFF NOW AND THROW THEM AWAY .
I called my builder. Its been a long time but he said he does not buy cheap rockers. Also I think I screwed this up, the cam is a big roller cam. I think I said solid before. He also feels that we can change the cam, lifters,springs,and manifold and be good.
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Re: Need ideas for a 450HP build on my 383/ street motor?
[Re: Cab_Burge]
#975533
04/21/11 11:28 AM
04/21/11 11:28 AM
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Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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with 500+ inches, the single plane will probably be OK on a street car....
for a cam, I'd talk to tim at bullet cams and have them grind one. you could stick with a solid roller, since you already have the expensive part (lifters), and just get one with semi-mild ramps, probably [Email]250-260@.050[/Email] duration, and ~.4-.42" of lobe lift, maybe something like their R294/415 on the intake?
and it will make way more than 450hp....
Last edited by patrick; 04/21/11 11:48 AM.
1976 Spinnaker White Plymouth Duster, /6 A833OD
1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: Need ideas for a 450HP build on my 383/ street motor?
[Re: Cab_Burge]
#975534
04/21/11 01:36 PM
04/21/11 01:36 PM
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Joined: Jan 2003
Posts: 9,857
Cambridge Idaho
RUMBLON
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Cambridge Idaho
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Quote:
Those look like a set of T&D rockers  Good stuff That intake works well on big motors also  Its ready to run, check the cam for duration and lift and see if you want to try it before "fixing it" 
Cab thanks. This builder is the same guy who built that 572 Indy Maxx motor a few years back. Hes a good builder so I didnt think he would throw any junk on it for lifters. But I also like to get opinions from mopar folks on here as hes a builder of all brands since the 60s. Would you keep the roller cam or go with a solid roller cam.This is going to be driven a lot and have after market A.C. Power steering and power brakes.
RUMBLON
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Re: Need ideas for a 450HP build on my 383/ street motor?
[Re: RUMBLON]
#975535
04/21/11 01:42 PM
04/21/11 01:42 PM
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Joined: Aug 2003
Posts: 43,099
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,099
Bend,OR USA
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Quote:
Quote:
Those look like a set of T&D rockers Good stuff That intake works well on big motors also Its ready to run, check the cam for duration and lift and see if you want to try it before "fixing it"
Cab thanks. This builder is the same guy who built that 572 Indy Maxx motor a few years back. Hes a good builder so I didnt think he would throw any junk on it for lifters. But I also like to get opinions from mopar folks on here as hes a builder of all brands since the 60s. Would you keep the roller cam or go with a solid roller cam.This is going to be driven a lot and have after market A.C. Power steering and power brakes.
RUMBLON
I like big cams in stroker street motors, especially solid roller cams  There are draw backs like roller life when compared to the hydraulic roller lifters in the same motor. Find out the specs on the cam and let us know or PM me for future suggestions, no sense in getting into a discussion on cam lobes with everybody and there brothers on here   I will need to know more about the car also like converter size and brand, rear gear ratio, car weight and some other things 
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Need ideas for a 450HP build on my 383/ street motor?
[Re: Prince_Valiant]
#975536
04/22/11 02:57 PM
04/22/11 02:57 PM
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Joined: Jan 2003
Posts: 9,857
Cambridge Idaho
RUMBLON
OP
master
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OP
master
Joined: Jan 2003
Posts: 9,857
Cambridge Idaho
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Quote:
I'd run a performer RPM, maybe with the divider ground down and a 2" spacer and if you're looking to stick with flat HYD, maybe go with a hughes HEH3742BL or HEH4246 (237/242 @ .050, .584/.592 lift w/ 1.6 rockers, 108 LSA or the later which is 242/246 @ .050, .592/.606, 108lsa)...that should hopefully keep cylinder pressures down so that you'd be happy with pump gas and still make PLENTY of power.
The amount of low/mid range torque w/ either cam would be stupefying though.
Nor would I be adverse to doing a basic 383...with a good "268" cam and tri-y headers with good AL heads it'd be a nice street combo that would certainly be enjoyable at a cruise night and smile inducing at a stoplight drag
Thanks for the part numbers. I think I am on the right track. This sure beats letting a race motor sit and building a whole new engine.
And Cal, the builder says he thinks your right on the rockers, thats a typical rocker he uses.
Dave
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Re: Need ideas for a 450HP build on my 383/ street motor?
[Re: RUMBLON]
#975538
05/07/11 11:33 PM
05/07/11 11:33 PM
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Joined: Nov 2009
Posts: 2,275
Desert Tracker
HYPER8oSoNic
top fuel
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top fuel
Joined: Nov 2009
Posts: 2,275
Desert Tracker
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As a final thought on a 450 hp 383 big block, check this article out: "383 Power Play" by Steve Dulcich, in Engine Masters, Spring 2009. Well thought out and done mostly with production pieces that passed inspection. Simple, EFFECTIVE bolt-ons that yielded GOOD power!! Good tech, Steve! 
Last edited by HYPER8oSoNic; 05/08/11 11:19 PM.
"Stupidity is Ignorance on Steroids"
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