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  #1  
Old 02-14-2005, 03:22 AM
TheBuccaneer TheBuccaneer is offline
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Location: Conway AR.
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Biggrin blower/supercharger 360

Hey guys I need to know somthin here
some people say it might work but more people say its a great combination
so heres what I got I have a new 360 mopar in my 4x4 r/c and I want to ad a blower to it I have not yet decided to use eather a BDS-671,Weiand-671,
or the LittleField-671 but I want 8 PSI of boost

The motor uses a stock crankshaft 3.580 and and the bore is 4.00
it also uses stock rods,and pistons
But I have installed a Performance (street) cam with roller lifters
Cam specs: Intake lift 0.444 Exhaust lift 0.468 seat to seat
My compresion ratio is a healthy 8.70
and I am using stock heads Fully ported with larger valves Intake 1.940
Exhaust 1,730
and the car is a edelbrock (1406) 600 CFM elec. choke

I used Desk top dyno 2000 the newer version and used a Roots-BDS 671 (street blower)
flow 390.0CFM
Boost limit 8.0PSI
Eff:55.0%
belt gear ratio 1.00


THe results that showed up. I should say wer PERFECT!
smooth non jagged HP & TQ ranges

The TQ reached 500FT-LBS @ 3,300RPMs
And delined @ 5,500 Rpms the max TQ was 511Ft-LBS @ 4,500RPMs
and it remaned rather flat from start to finish

The HP was also Perfect with the max HP right when the Tq. declines
It reaches 500HP. @ 5,300 RPMs and declines @ 6,200RPMs
and reaches its max HP. 508 @ 6,000 RPMs


I personaly think this Is THE PERFECT COMBINATION but any other advice or what Blower ya think I should use yould be Helpfull and Apreciated
cause I dont know for sure if this is a good Idea but if you think its great go on ahead and say so. I also hope this healps anyone elses problems
and If anyone needs a test run on a certain engine just say so Il be glad to help ya out cause this Desk top dyno is A great program far getin a vary acurate rating on engine power
It works with Nitruos blowers,strokers,Mopars,Chevys,Fords, and most imports, just let me know!
-Have a nice day -Kevin
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  #2  
Old 02-14-2005, 08:41 AM
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dwc43 dwc43 is offline
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Biggrin

Either the BDS or Weiand will do just fine. Your cr is o.k. You'll need a new cam made specifically for a blower and you should rebuild with forged pistons. You'll need a Thermoquad cause 600 cfm is no where closs to what a blower engine will need. The stock small block Thermoquad is 800 cfm and that's on a stock non blower engine. Better heads than what you have would also be a nice upgrade for more power with some 2.02 1.60 valves.
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  #3  
Old 02-14-2005, 09:50 PM
BDS 871 Cuda BDS 871 Cuda is offline
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Default Call BDS before you do anything!

BDS can help you. www.blowerdriveservice.com
8 psi of boost on cast pistons will kill them. Max should be 5 to 6 psi.
Desk top dyno 2000 is fun to play with but remember it's a toy for your computer. At $39.95 not to many top engine builders depend on it.
I would not trust a 360 with stock crank, rods, and pistons to hold up to 511 ft-lbs of TQ and 508 HP.

Just call BDS! Tell them what you have and they can set you up.
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Old 02-15-2005, 12:35 AM
TheBuccaneer TheBuccaneer is offline
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Default

cool thanks alot guys for yalls help.
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  #5  
Old 02-17-2005, 10:02 PM
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jasontlit jasontlit is offline
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Default

I'd say go with Littlefield....but, only 'cause its my last name! HA HA!
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  #6  
Old 09-07-2005, 01:47 AM
tman32 tman32 is offline
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Location: Lucknow Ont. Canada
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Default my input

I have a 671 dyres blower on my 340 cuda. If you continue with this you definitally need to go to a blower cam and piston. I also recomend upgrading conecting rods. Due to the fact that I already snapped one but was a low rpm, thank god. Could have been a major delema.
Hope this is of help.
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