blueraven

I recently purchased an XB FAIRMONT on the weekend (can you tell im excited?) and was toying around a little with it on monday. Its a 302 column shift auto that was been previously modded a little. I found out that it has an Holley 350cfm.

My question is, will this make any performance increase on a 302 engine over the standard carby for an XB?

How about if it ran on a 4.1 XF Falcon? What would be the gains in that?

brenx

It's just for fuel economy on a 302. On a 250 X flow it's a performance upgrade.

Brenden

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XB Fairmont (street car) 11.07@123.02mph.

blueraven

Thanks!

On that note, the engine is only barely running at the moment and not knowing alot about engines ive been learning as much as I can!

The carby's choke is broken on the side, it appears to be missing bits and a peice of plastic is actually broken. Seeing as though I don't plan on replacing the choke (or carby for that matter) for a while, can I just remove the remaining components so it looks like this?



I think (again I stress my lack of knowledge in this area) that one of the reasons the engine is not running correctly is that the choke cannot function at all and is blocking the air.

smciner1

Have you thought about replacing it with a small 4 barrel Holley?

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Dellboy999

You can remove the choke, and put in a manual cable if you wish, otherwise you will have to set it static as a compromise between cold and hot running, or just wide open as if the engine is hot, and it will idle badly when cold.

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GreenMachine

the manual choke on my 600 is set fully open, can be a bit of a bitch to start cold, but otherwise not too bad.

if you're not keen on spending the money to either get a different carb or replace the choke, i'd say just remove it

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351C ZH MARQUISINATOR
Presenting, at great cost to management:
.020 over 351 Clevo, 10:1 comp, ported 302 heads, blueprinted and balanced, custom ground cam, Edelbrock intake, 600 Holley, K&N air filter, Custom Zip-Ties(tm), MSD ignition, Genie extractors, 2 x 2.5" exhaust, 2800rpm stally, rooted C4

blueraven

Exactly. This is what I thought would be the case.

When I can spend the money i'll replace it with a bigger and better carby (why replace when you can upgrade) but until then, I just needed to know that it would work if I nursed her when she was cold

GreenMachine

just be prepared to spend 15 mins getting her running on cold mornings... and to stall at the first couple of traffic lights

__________________
351C ZH MARQUISINATOR
Presenting, at great cost to management:
.020 over 351 Clevo, 10:1 comp, ported 302 heads, blueprinted and balanced, custom ground cam, Edelbrock intake, 600 Holley, K&N air filter, Custom Zip-Ties(tm), MSD ignition, Genie extractors, 2 x 2.5" exhaust, 2800rpm stally, rooted C4