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How can i get easy power out of a 250 crossflow ? 

 

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 Post subject: How can i get easy power out of a 250 crossflow ?
Posted: Wed Jul 10, 2013 7:53 pm 
Oompa Loompa
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Easy power out of a 250 crossflow carb advice appreciated.
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 Post subject: Re: power out of a 250 crossflow
Posted: Wed Jul 10, 2013 8:56 pm 
Getting Side Ways
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how much do you wanna spend?

 

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 Post subject: Re: power out of a 250 crossflow
Posted: Wed Jul 10, 2013 9:52 pm 
Oompa Loompa
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$2000
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 Post subject: Re: power out of a 250 crossflow
Posted: Wed Jul 10, 2013 9:54 pm 
Getting Side Ways
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Well, that won't get you far. Extractors, exhaust, cam, roller rockers, Redline manifold and a 500 holley. That would be pushing it. And maybe only 130-140rwkw

 

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Daily driver: AU2. 5 speed. 19" FG luxos. Full exhaust. Lowered. AU3 XR leather interior, converted to full power windows. 3.45 LSD. IN THE FUTURE: Tickford 6
Weekend driver: EA SVO AU motor. Built BTR. TCE 2800 stall. T76 turbo. Locked diff. On E85. approx 320rwkw. 11.5 @121mph

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 Post subject: Re: power out of a 250 crossflow
Posted: Wed Jul 10, 2013 9:56 pm 
Oompa Loompa
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it will only be for a p plate so that isnt bad, thanks for the ideas
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 Post subject: Re: power out of a 250 crossflow
Posted: Thu Jul 11, 2013 1:51 am 
Getting Side Ways
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89.SVO wrote:
Well, that won't get you far. Extractors, exhaust, cam, roller rockers, Redline manifold and a 500 holley. That would be pushing it. And maybe only 130-140rwkw


130 to 140 rwhp ??????......must be a towing cam then ?????
This had 275 rwhp.
Headers, 3" exhaust, Crow cam, Redline 4 barrel intake, 600 Holley, roller rockers, MSD ignition, and a regraphed dizzy, and a p&p head, with 10:1 CR on pump 98, and was pulling to 6,500 rpm.

Again, depends on how far ya wanna go.

 

 

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 Post subject: Re: power out of a 250 crossflow
Posted: Thu Jul 11, 2013 6:28 am 
Getting Side Ways
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He said rwkw not rwhp lol. Bloody school holidays

 

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 Post subject: Re: power out of a 250 crossflow
Posted: Thu Jul 11, 2013 7:54 am 
Getting Side Ways
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cjh wrote:
89.SVO wrote:
Well, that won't get you far. Extractors, exhaust, cam, roller rockers, Redline manifold and a 500 holley. That would be pushing it. And maybe only 130-140rwkw


130 to 140 rwhp ??????......must be a towing cam then ?????
This had 275 rwhp.
Headers, 3" exhaust, Crow cam, Redline 4 barrel intake, 600 Holley, roller rockers, MSD ignition, and a regraphed dizzy, and a p&p head, with 10:1 CR on pump 98, and was pulling to 6,500 rpm.

Again, depends on how far ya wanna go.


and he had a max of $2000. I said 500 holley, no MSD, standard dizzy, standard head, standard comp. What you said above would've been about $5000

 

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Daily driver: AU2. 5 speed. 19" FG luxos. Full exhaust. Lowered. AU3 XR leather interior, converted to full power windows. 3.45 LSD. IN THE FUTURE: Tickford 6
Weekend driver: EA SVO AU motor. Built BTR. TCE 2800 stall. T76 turbo. Locked diff. On E85. approx 320rwkw. 11.5 @121mph

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 Post subject: Re: How can i get easy power out of a 250 crossflow ?
Posted: Fri Jul 12, 2013 2:31 am 
Getting Side Ways
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At the time, the guy was lucky, he already had a 4 bbl intake, ( wasn't fitted ), the engine was existing with a middle of the road cam, and a 2 bbl Weber on it.
We did however got the head shaved, ( the donk had flat top pistons in it already ), got a Crow Cam, valve springs and a timing chain set, roller rockers, MSD 6AL, and I had a few 600 Holleys sitting around, he had some too, just fitted it with a rear power plate, and centre float bowls, and cut out the choke horn, and rekitted it.
I regraphed the dizzy, and altered the internals of the mechanical fuel pump, as well as p&p'd the head as well as port matching the intake to the head.
We are both mechanics, but I know how to modify stuff, he doesn't, so I learned him up a bit.
It would light up a pair of 265/70R15's in 2nd gear, and chirp it good into 3rd.
It had a singlerail 4sp, and a 2.92 LSD with disc's.
We put those tyres on it to give it some traction, the 235/45R17's weren't cutting it.
I think we spent about $2,000 doing what we did.....that was in 2006.

 

 

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 Post subject: Re: How can i get easy power out of a 250 crossflow ?
Posted: Fri Jul 12, 2013 8:17 am 
Getting Side Ways
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i'm assuming OP has a stock engine. Also, it's 2013, s**t is expensive now lol

 

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Daily driver: AU2. 5 speed. 19" FG luxos. Full exhaust. Lowered. AU3 XR leather interior, converted to full power windows. 3.45 LSD. IN THE FUTURE: Tickford 6
Weekend driver: EA SVO AU motor. Built BTR. TCE 2800 stall. T76 turbo. Locked diff. On E85. approx 320rwkw. 11.5 @121mph

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 Post subject: Re: How can i get easy power out of a 250 crossflow ?
Posted: Sat Jul 13, 2013 12:09 pm 
Getting Side Ways
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Power: 161 rwkw

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89.SVO wrote:
i'm assuming OP has a stock engine. Also, it's 2013, s**t is expensive now lol


Yeah....I know......it's still a case of how fast do ya wanna go......and what do you expect for the money spent ??????

Spend 2 grand on the wrong stuff/place, and there could be huge disapointments.

 

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