hi,the stock roller cam will work fine with a carby. the 92 fairlane engine is just a 5.0 HO usa engine and the cam has a bit more lift and duration than tha stock usa 5.0L efi engine and is much better than the old 302w carby stock cam. any of the cams that are listed fore the your efi engine will work perfectly fine with a carby. if you do start doing cam swaps, just check the firing order is correct. early carb windsors and the efi 5.0L engine use the 1 5 4 2 6 3 7 8 firing order and the efi 5.0 HO(same as all aussie falcon/fairlane fitted 5.0's) use 1 3 7 2 6 5 4 8 same as 351w and clevo. if any other q's just ask.
the stock cam is only good to around 3500rpm. if you use a good single plane or the edelbrock rpm air gap dual plane intake you will make more mid and topend power than the stock efi setup. it will rev higher than 3500 of course wether its efi or carb but they just dont make great power with the ultra conservative stock cam.
True every test i have read shows a carbie setup outpowers a efi setup on a 5.0 although most tests ive seen start from 2500rpm up, the hp and torque has always been higher, these motors love a victor jnr or as craig said a edelbrock rpm air gap, no bigger than a 650 cfm carb.
Experience tells me an aftermarket manifold like an airagp fitted with the injection makes more torque and better midrange than a carby with better emissions.. as I said a carb costs over all power and a probe will prove it kills the emissions .
yes atec77, i like the idea of EFI on an air gap or single plane manifold. that would definetly give the benefit of good airflow and better engine control. just more expensive too!!
The factory manifold is a fudge in some respects , I ran an air gap on a 400 inch clevo with injection and the mid range was wonderful ( fitted to a coupe).
geez atec, you're being a bit too fair on the stock manifold! ha ha , its a fudge in most respects! not a really well thought out piece of engineering, the lower half is reasonable though.
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