i have XA Coupe With a 302c with Pacemaker extractors, a cam with a 484 lift,reco on the rest of the botom end, stock C4, standed intake manifold ,and some none reco but good condition 2v closed Chamber Heads. Was runing a holly 600 vac but the vac didnt seem to be workin and it was blowin fuel all over the place i got givin a thermoquad and am runing that now(still havein probs with the vac seconds .LOL.) oh and im runnin duel fuel ATM but might ditchit yet
it pulls ok when i drop to second or after i hit around 50,60 k/sec
but off the mark its got nothin. And when ever the seconds are suposed to open it seems to die (choke or flood I thought) But a i cant tell y????.
i was told to get a port and polish done on the headsand a general reco( was gonna do anyway) put on some YT rollers and
increas the vales to 4v or just increase the exhust only???Sounds Expensive.
The easiest way to make it go a bit better would be to change the diff ratio.Roller rockers won't make it go any better,so if you want it to take off the diff and maybe a small high stall convertor would be a good place to start
Find someone in your local area that knows how to rebuild the Carter. These things can be real bastards but if they are done right the car will run smooth and go hard, especially when the secondaries cut in. A typical rebuild will cost you around $300. Do not get some wally to do it for you, get some references as a car with a sick carby will go no where fast.
You are correct in going for the 4V exhasut valves only, the 2V inlet are more than sufficient. If you wont to go for the roller rockers, look at a better cam, batter heads, better carb, better gearbox etc etc, get my drift. These things alone will not make a great deal of difference.
Always remember, keep it simple and speak with a performance engine rebuilder who knows their stuff and will give advice freely. Then, find a reputable spares supplier and go from there, have fun.
I think a 600 cfm Holley might be a little bit big for a pretty standard 302 Cleveland.
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Originally posted by paull Find someone in your local area that knows how to rebuild the Carter. These things can be real bastards but if they are done right the car will run smooth and go hard, especially when the secondaries cut in. A typical rebuild will cost you around $300. Do not get some wally to do it for you, get some references as a car with a sick carby will go no where fast.
You are correct in going for the 4V exhasut valves only, the 2V inlet are more than sufficient. If you wont to go for the roller rockers, look at a better cam, batter heads, better carb, better gearbox etc etc, get my drift. These things alone will not make a great deal of difference.
Always remember, keep it simple and speak with a performance engine rebuilder who knows their stuff and will give advice freely. Then, find a reputable spares supplier and go from there, have fun.
I had an old tired thermoquad on my xa.I decided to replace it with a holley but my oldman convinced me to get another thermoquad...he quite likes them. So i took his advice and bought a reco one for $400 with a new plastic base..Some people say i was quite mad but it goes quite well...very smooth. And has a bit of punch expecally when the biiiiig secondarys open up. i've had no problems with it (i'm told it drives like new)
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In the garage:
1972 XA Falcon sedan: G.T replica (Copper Bronze) 302c V8,4bbl, Mild cam, High-Tech Headers, Twin system, C10, King super lows, Reset leafs, 14x7 Globe bathurst wheels, Koni ajustable suspension.
Baremetal respray in progress - Copper bronze With Gold pearl, satin blackouts
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