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Author Topic: Off Brand Turbo Engine Question  (Read 11990 times)
prof7376
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« on: June 17, 2015, 02:05:32 pm »

Ok so I am helping a friend with a two vehicle project.  He has a sand drag truck (Dodge) and a 68 Charger that he wants to use for Drag Week.  His plan is to have one engine for both vehicles.  The engine plan is a twin turbo 49X CI Hemi, best of everything expecting ~2500 hp.  The problem I see is that he really wants to do a manual in the sand truck .  I can't wrap my head around how that is going to work well for sand drags 600-800 feet I believe.  I would think one would want to get those turbos spooling hard at the launch for max tire speed at launch.  With an auto trans you could foot brake it and build the pressure.  Anybody run anything like this?  Asking here because I have found the best advise here and despite the name plate, the theories are the same.  Thanks
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« Reply #1 on: June 17, 2015, 03:28:02 pm »

I wonder how much "traction" they get in the sand with those beasts?
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prof7376
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« Reply #2 on: June 17, 2015, 03:32:47 pm »

No experience with sand racing.  I am doing the wiring and interconnect so he can do plug and play.  From what he says its all about maximum wheel speed at launch.  I thought maybe one could drop the clutch at WOT in maybe 3rd and maybe with a adjustable clutch it could use a little slip to work like a converter.  I would think for something like that one would use a Powerglide and a transbrake. 
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Hold 'er to the floor and hope for the best

1984 Frankenstien. (Sold)
1994 GT Convert.  65 .030 289, AFR 185s, Comp SFT, Weiand X-cellerator, QFT 600 HR, Accufab 1.75 Midlength, 5 spd 3.73.  Cruiser!!
dennis112
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« Reply #3 on: June 17, 2015, 05:12:01 pm »

Curious as to what he planning on using for a manual transmission?  A Lenco?
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Dennis

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prof7376
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« Reply #4 on: June 18, 2015, 07:48:35 am »

I believe it is a worked over Hemi 4 spd.  I am guessing that without traction the stresses are reduced and it can survive.
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Hold 'er to the floor and hope for the best

1984 Frankenstien. (Sold)
1994 GT Convert.  65 .030 289, AFR 185s, Comp SFT, Weiand X-cellerator, QFT 600 HR, Accufab 1.75 Midlength, 5 spd 3.73.  Cruiser!!
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