Carb Recommendations for 289

I have a 289 bored .030 over with KB pistons with 9.7:1 compression ratio. A XE268H Compcams .224/.230 @.050 and .509/.512 lift.
Stock heads ported with 1.94/1.60 valves. A Edelbrock RPM Air gap. The car weights 2600 lbs. and has a T-5 manual and 3.73 rear gear ratio.

So what carb should I use with this combo?
Thanks in advance.

I'll throw my hat in ...I would say with that combo. I would try a 700 dp Holley with manual secondary's.
The only thing I've done to the carb was change the jets a size down. Keep in mind..I'm at 7 ft above sea level.
No hesitations ..just nice and crisp throttle response.

I would recommend a 650DP for your application. Better throttle response, improved venturie signal, and superior top-end response over the vacuum secondary.

Going with the 750 might be a little large with that motor. It would work in a race application where WOT is utilized all day long otherwise stick with the 650cfm.

If you need any further assistance or help contact us at (877)TPC-CARB

~Ty
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I'll second the 650 DP[img]/phpBB/images/smiles/icon_wink.gif[/img]

650DP

I went from a 650DP to a 750 Speed Demon on my car, and the dragstrip et remained UNCHANGED.

650DP is plenty.

Good Luck!
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I have nearly the same engine combo as you; .040 over 289, 9.8 compression, about 10 deg. and .030" more cam w/solid lifters, the Airgap, ported stock '65 heads w/ 1.090 and 1.060 valves and a Carter 625 AFB. Day before yesterday it went 12.85 sec. and 106 MPH (car is full weight '67 Cougar except front bumper, A/C compressor and P/S pump are removed). Prior outing with a 750 (3310) Holley was 13.12 and 103 MPH so I'd also say you don't need a bg carb.

I will have to go along with the crowd on this one. I use a 650 Speed Demon on my 5.0, it goes mid 12`s, and is plenty capable of low 12`s. It runs and idles fine. I think anything over 650 would not benefit your application.
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nascar stock cars run 350cfm carbs....and make what 650hp ?? somethin like that.

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On 2003-01-20 22:54, climbingchad wrote:
nascar stock cars run 350cfm carbs....and make what 650hp ?? somethin like that.
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I have a Holley 390 DP racing carb like your talking about and I like to try it out on just about everything. I've seen it make a mild 302 run 13.20 @ 103 mph. Talk about responsive!!! [img]/phpBB/images/smiles/icon_eek.gif[/img]
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I run a 0.030" 289 with ported GT-40P heads and a little less cam than yours. About 9.5:1 comp. I've got a 600 vac sec on it at the moment but I'm just waiting for a second hand 650DP to turn up in the classifieds before I go down that path.

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'65 Australian Delivered Mustang Coupe, 289, TQ30 Cam, 600 vac sec holley, GT40P heads (full port), Yella Terra roller rockers, Pacemaker tuned headers, 2200 stall, 3.00:1 8" diff
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<font size=-1>[ This Message was edited by: trav on 1/21/03 2:59pm ]</font>