Re: Any 400 builds here? (non stroker)
[Re: court9155]
#335992
06/03/09 04:02 PM
06/03/09 04:02 PM
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Joined: Jan 2003
Posts: 75,062 U.S.S.A.
JohnRR
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Posts: 75,062
U.S.S.A.
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I did this one a few years ago. 400 with a 383 forged crank, Hemi rods and 451 pistons. With lightly ported Edelbrock heads and a decent roller cam it makes 600 hp. Made for a slightly radical A body car that my buddy drove to the track and back.
What kind of machining was involved? What 451 pistons?
I already have the 400 block and forged 383 crank please advise!!
Dan
That motor has 1.320 CH pistons and virtually NON EXISTENT 6.965 rods , .990 pin , std mopar big end .
Machining , should have bolted together no problems
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Re: Any 400 builds here? (non stroker)
[Re: 71383beep]
#335995
06/03/09 04:34 PM
06/03/09 04:34 PM
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Joined: Nov 2006
Posts: 2,255 IL
furious70
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based on my own use of one on an 383HP in a street car and the Hot Rod test, stay away from the Holley Street Dominator intake for sure if you want low end grunt. Don't know anything about that old Weiand.
Why's that?
I am running one now it pulls great for me in my 383. The holley SD intake rated just fairly lower than the Edelbrock RPM that one of mags tested a few years ago with a whole bunch of intakes on a fairly vanila 383 IIRC. If that's what you have it's not a terrible intake.
Ohh here it is...hot rod did it with a bunch of manifolds. http://www.hotrod.com/techarticles/hrdp_0712_mopar_intake_manifold_comparo/index.html
at 3000rpm the SD is down 17ft lbs to a tm6, down 27ftlbs to an rpm perf, and down 37ftlbs to a plain performer. Imagine what those numbers would be at 2500rpm? That's a serious gap in tq for a street cruiser. The SD made great power up top but gives up 17ftlbs more at 3000rpm than any other intake tested. That's exactly how it felt on my engine vs the stock intake and rpm perf. I can see using a SD on a stroker or a race engine, but I can't see using it on a street car based on my butt-o-meter. Maybe you should try a torker or rpm perf on yours, you might like it even better if it's a street car.
Last edited by furious70; 06/03/09 04:37 PM.
70 Sport Fury 68 Charger 69 Coronet 72 RR
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Re: Any 400 builds here? (non stroker)
[Re: 8secDart]
#335997
06/03/09 04:58 PM
06/03/09 04:58 PM
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Joined: Nov 2006
Posts: 2,255 IL
furious70
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sure, but this guy seems to be working on the lower end of the scale here where you're looking at a 400hp/450ftlbs engine maybe? All the tq you can muster is useful at that level.
70 Sport Fury 68 Charger 69 Coronet 72 RR
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Re: Any 400 builds here? (non stroker)
[Re: 8secDart]
#335999
06/03/09 06:14 PM
06/03/09 06:14 PM
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Joined: Jan 2007
Posts: 1,668 Mi,U.S.A.
mike s
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Most of the blocks I see need some machining to reach 9.980 deck height.There should be plenty of clearance with a small street perf cam.As far as the 7511 Weiand intake with a port match and a bit of clean up inside they are the equal of a Torker.
Leave the gun.......take the Cannoli's....Mike
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Re: Any 400 builds here? (non stroker)
[Re: 71383beep]
#336003
06/04/09 01:20 AM
06/04/09 01:20 AM
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Joined: Mar 2005
Posts: 3,445 N.Wilkesboro,NC
DusterKrazy
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Quote:
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based on my own use of one on an 383HP in a street car and the Hot Rod test, stay away from the Holley Street Dominator intake for sure if you want low end grunt. Don't know anything about that old Weiand.
Why's that?
I am running one now it pulls great for me in my 383. The holley SD intake rated just fairly lower than the Edelbrock RPM that one of mags tested a few years ago with a whole bunch of intakes on a fairly vanila 383 IIRC. If that's what you have it's not a terrible intake.
Ohh here it is...hot rod did it with a bunch of manifolds. http://www.hotrod.com/techarticles/hrdp_0712_mopar_intake_manifold_comparo/index.html
at 3000rpm the SD is down 17ft lbs to a tm6, down 27ftlbs to an rpm perf, and down 37ftlbs to a plain performer. Imagine what those numbers would be at 2500rpm? That's a serious gap in tq for a street cruiser. The SD made great power up top but gives up 17ftlbs more at 3000rpm than any other intake tested. That's exactly how it felt on my engine vs the stock intake and rpm perf. I can see using a SD on a stroker or a race engine, but I can't see using it on a street car based on my butt-o-meter. Maybe you should try a torker or rpm perf on yours, you might like it even better if it's a street car.
All that is true, but there's a big difference in spending $230 on an intake and running what you have on hand. Kind of the same situation this guy has. If he's got a single plain and he's not looking at spending a ton of $$ than use it. It's better than stock and it won't be terrible...A lot depends on gearing and converter too. I'm running 3.73's and a 2600 ish converter so the motor is in the power band above 3k often.
I'll gladly swap an RPM on if I can get a good deal on one but those aren't old enough intakes to be found in the swaps much. Free is good though if your offering...
You hit the nail on the head with that one! The clue is that Im poor as dirt. Big $$ items are out of the question, Im 27 and far from rich.
I say it's better for me to experiment and find out than to tinker with honda civics and be really dissapointed overall in many ways
If anybody wants to donate a decent cam, headers,carb,tray or roller timing chain Im all ears
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Re: Any 400 builds here? (non stroker)
[Re: 383man]
#336005
06/04/09 08:54 AM
06/04/09 08:54 AM
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Joined: Nov 2006
Posts: 2,255 IL
furious70
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Ron, I've not personally run the RB or seen dynos on it, but if you read that Hot Rod link further up the chain, the b block SD is down on torque compared to all the other intakes. Don't know if it's something goofy with the b block one or not- the article says that the rb version is more highly regarded but they don't give any data to support the claim. From my own testing, I had more tire spin from idle with the stock intake and 3.23's than I did with the SD and 3.91's on the same engine in the same car, so it killed a lot of tq in my case. YMMV.
I'm 'cheap' too, I've never bought a new intake. Over 10yrs I've grabbed good deals on about 1/2 dozen different b block intakes just to try them out, including the rpm perf. That's the one on the car now (with efi).
70 Sport Fury 68 Charger 69 Coronet 72 RR
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Re: Any 400 builds here? (non stroker)
[Re: furious70]
#336006
06/04/09 12:57 PM
06/04/09 12:57 PM
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Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
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Balt. Md
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I decided to try the Street Dominator when I saw that it made almost as much hp in the Mopar Muscle intake shootout as the Victor. The Street Dominator actually made more hp then every manifold other then the Vivtor which it was close. But thats high end hp. I dont remember how it was in the midrange. Thats why I decided to try it. I can say we tried one on my sons Dart. He went 11.55 @ 116 with the RPM in the test and ran 11.59 @ 117 with the Street Dominator. SD had more mph but the RPM had the et as it was better down low. I would like to try an RPM on my 63 one day. Ron
Last edited by 383man; 06/04/09 12:59 PM.
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