CROSSFIRE SWAP TO CARB



Re: CROSSFIRE SWAP TO CARB

Postby ntwizrd » July 22nd, 2009, 7:07 am

thanks, i appreciate all the info you supplied.
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Re: CROSSFIRE SWAP TO CARB

Postby grumpyvette » July 22nd, 2009, 7:13 am

glad to help where I can! :mrgreen:
IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!
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Re: CROSSFIRE SWAP TO CARB

Postby grumpyvette » January 27th, 2014, 11:16 am

now I,d point out that you can make the car run fairly well with a different cam, better heads and a new intake.
carbs operate best at a fuel pressure level of about 5 psi, your cross fire throttle body injection fuel pump operates at about 12psi-15 psi thus a fuel pressure regulator swap will be required and a different fuel pump is not a bad idea.

viewtopic.php?f=55&t=211

THE OFFY base IS STILL CURRENTLY MADE, and can be adapted, to use twin throttle body injection or two 500 cfm carbs rather easily, swaping to a much better cam will allow you to make a good deal more power but swapping to a higher stall speed torque converter and a 3.54:1-3.73:1 rear gear is going to make the choice of effective and useful cams far better.
your cam choice will depend on the cars gearing ,compression, displacement and drive train, so do the required research or at least ask questions before selecting a cam to match your application.
If you want to keep the rather impressive and slightly exotic cross fire look the offanhauser dual quad intakes a great option.


Image

http://store.summitracing.com/partdetail.asp?autofilter=1&part=OFY%2D5893&N=700+115&autoview=sku

Image

http://store.summitracing.com/partdetail.asp?part=OFY-5902

http://store.summitracing.com/partdetail.asp?part=OFY-5903

the basic crossfire manifold is a HUGE restriction EVEN if ported to the max, the XRAM is nothing but a single plane carb intake with a mickey-mouse adapter to allow the TBI injection to be bolted on.

read thru this

http://www.swko.net/~lionsden/crossfire.htm

either the OFFY or the SY1 intake base, with a custom top plate will be a HUGE improvement, easily able to support 500hp or more on a correctly configured engine with decent heads like the AFR 210cc or AFR 195cc

http://www.airflowresearch.com/210sbc_rh.php

and a decent cam like this crower

http://www.crower.com/misc/cam_spec/cam_finder.php?part_num=00404&x=25&y=17

installed in a 10.5-11.0:1 cpr 383

but keep in mind youll need a 3000rpm stall converter and 3.73:1 rear gear to run those
keep in mind INTAKE HEADS AND CAM and COMPRESSION ALL must be upgraded to get full flow into the heads , so that the power levels your looking for can be achieved,and the stall and rear gear must be changed to use the significantly higher rpm power band effectively, but theres no comparing the results after the mods are correctly made, youll have well over 140 plus MORE hp,(plus) if you do things correctly
IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!
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Re: CROSSFIRE SWAP TO CARB

Postby grumpyvette » January 27th, 2014, 11:37 am

summit racing sells a complete dual quad intake assembly you cold use to swap if your looking to change from the cross fire injection, youll also obviously want to verify the distributor you use fits and functions, the required fuel supply issues are dealt with and sensors and matching gauges are correctly connected or replaced .
the selling point of using dual quads is you still have a good performing induction system that if properly tuned makes for both a nice conversation starter and exceptional performance, the problem with that selection is that about 80% of the guys I see that have a dual quad induction set up are basically clueless as to the fine points of tuning the engine correctly.

if you were local and were willing to buy the required parts it would be a fun project to work on Id be glad to help with, but its just not that difficult to do so don,t think this upgrade to either a different intake manifold or even swapping to a carb equipped engine and hooking up a few gauges is a huge problem, it might take a few weekends but its certainly something anyone whos willing to do a bit of reading can do

http://www.summitracing.com/parts/edl-2025/overview/
Image

viewtopic.php?f=35&t=3399&p=26865#p26865

viewtopic.php?f=55&t=444&hilit=dual+quads

viewtopic.php?f=80&t=728&hilit=camaro+sensor

viewtopic.php?f=55&t=211

viewtopic.php?f=55&t=464

viewtopic.php?f=55&t=109
IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!
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Re: CROSSFIRE SWAP TO CARB

Postby grumpyvette » June 2nd, 2014, 10:08 am

IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!
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