Re: 250pre -x vrs 250-x flow (HELP!!!)
X flow with a holley 350 all the way
i have a 200cui cortina crossflow (3.3L six), just got some extractors, redline manifold and holley 350 carbie for $220. total cost after new exhaust and carbie fitted, tuned, new accelerator cable etc, is about $700. money very well spent.
So much torque/response at bottom end you'd think its a manual, no lag or flat spots, cains our EL automatic for accelerator response. first time i drove it after the carbie was installed, i spun the wheels on a speed bump (used to the old laggy engine) in a shopping centre and almost hit a grandma. can u picture any old 1970's sluggish falcon doin that? idles a lil rough, with the new exhaust sounds like a v8. spun out in the wet while playin around, no damage, just didnt expect to have so much response from her, in 2nd gear too :D
carburettor has size 61 jets and massive venturis (like that wen i bought it). people say holleys are only good for a drink o fuel, done me a world of wonder. fuel consumption is marginally more because i used to push the gas pedal down a fair bit to get over the accelerator flat spot on the old carbie (accelerator pump on standard stromberg carbie was stuffed).
webbers are ok..... fiddly too.... holley are more common (in my area anyway), simpler and self serviceable wen you know a little about what you're doing.
must do the extractors if you do the carbie, if you can get twice the air in, need to get it out too.