New 740 owner need info

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Old 06-01-2014, 05:36 PM
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Default New 740 owner need info

Alright so i have an 89 volvo 740 turbo
the way i bought it is as followed
i have an 84 block with an 89 head stock cam and port
but i have a seperate head that was on the 84 with a WEB race cam
specs are here
valve lash intake: stock Exhaust: stock
Lift: intake .436 exhaust .436
Duration intake 220* exhaust 225*
Duration @ .050 intake 250* exhaust 255*
lobe center is 110* 110*

it also says intake opens at 15* before tdc
Exhaust is 57.5* before bdc
intake closes at 55* after bdc
and exhaust closes 17.5* after tdc

My questions are will it fit the 89 head and if so will it be able to help me get to the 350 horse mark i want
and what will i need to get to 350 horse in this motor
 
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Old 06-01-2014, 05:57 PM
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the 740 turbo was 160HP stock. to get to 350HP you're going to need to do a LOT of work, significantly increased fuel delivery (bigger fuel pumps, bigger injectors), significant increased boost pressure. valve timing is the least of your concerns. when you get above about 250HP, you'll start eating up transmissions and rear ends.

84 and 89 heads, cams, and blocks should be pretty much interchangable, as long as they are both B230FT ... turbos have beefier exhaust valves with sodium filled cooling, and lower compression. The best blocks for this sort of thing are the 1994/1995 B230FT from a 940 turbo, those have piston skirt cooling.

the folks on turbobricks are much more into this sort of thing. this forum is more about stock.
 
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Old 06-01-2014, 06:35 PM
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well what i was told was get a stock powerstroke turbo/ gt35
ford thunderbird 390cc injectors
head studs
a better intercooler
the cam
run a stand alone fuel pump
and a tune
and that would get me there
oh and a mass air from some new volvo cause its bigger i cant remember what
and does anyone build the auto trans?
 
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Old 06-01-2014, 06:39 PM
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be better off dropping a small block ford in there. along with a suitable transmission.
 
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Old 06-01-2014, 06:42 PM
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lol i have a 5.3 vortec people were trying to bribe me to drop in just need a manual 6 speed and a decent rear end but the whole point is budget build i so far only have 800 into it including the car
 
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Old 06-01-2014, 06:49 PM
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350HP is going to need substantial suspension upgrades and bigger/better brakes too, if you actually want to use it sanely.
 
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Old 06-01-2014, 07:01 PM
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i was acutally thinking of finding a strait axle for it just dont know what would be the easiest to get under there
 
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Old 06-01-2014, 07:48 PM
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the 240/740/940 all have live axle rear ends, based on the Dana 30 design.

I guess I should ask, what purpose are you building this car up to 350HP for ? Is this for racing? Or 'drifting' ? or just a daily driver hotrod for doing hooligan street stuntz with?
 
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Old 06-01-2014, 08:26 PM
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some racing hear and there but mostly the last one
 
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Old 06-01-2014, 08:41 PM
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what racing class would a heavily-modified 740 be competitive in?
 
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Old 06-02-2014, 06:38 PM
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Talking

some fun bracket racing
 
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