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performer 289 vs f4b

General engine tech -- Drag Racing to Circle Track

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dondon
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performer 289 vs f4b

Post by dondon » Thu Sep 26, 2019 11:29 pm

what are peoples opinions on a performer 289 and a old f4b on a mild 331 sbf 224 @ .050 hydro roller, with promaxx heads, 9.75 cr, 3000 pound street car.

Mummert
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Re: performer 289 vs f4b

Post by Mummert » Fri Sep 27, 2019 3:07 am

F4B. If you have can get your hands on an Air Gap they're better.
Mummert Machine and Development 4 stroke hp
Mummert Y-blocks

mag2555
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Re: performer 289 vs f4b

Post by mag2555 » Fri Sep 27, 2019 6:14 am

The Performer Intake will strangle those promax heads above 4500 , but drivablity will be great if you have crap for gearing , so it may be trade off time depending on the Cam your running.

dondon
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Re: performer 289 vs f4b

Post by dondon » Fri Sep 27, 2019 6:23 am

it has 3.25 gears and a 3300-3500 convertor and a 735 holley

mag2555
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Re: performer 289 vs f4b

Post by mag2555 » Fri Sep 27, 2019 12:03 pm

Here's some info.
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dondon
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Re: performer 289 vs f4b

Post by dondon » Tue Oct 01, 2019 12:11 am

dyno results, made 418 hp @ 6000 and 408 tq @ 4500, f4b. didn't use performer.

travis
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Re: performer 289 vs f4b

Post by travis » Tue Oct 01, 2019 12:26 am

dondon wrote:
Tue Oct 01, 2019 12:11 am
dyno results, made 418 hp @ 6000 and 408 tq @ 4500, f4b. didn't use performer.
That is very encouraging, considering I just bought a set of them myself. Out of curiosity, what are your cam specs? Did you use the f4b because of hood clearance?
Was these the 9175 heads? Any port work done?

BobbyB
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Re: performer 289 vs f4b

Post by BobbyB » Tue Oct 01, 2019 5:15 am

What carb did you use don Don?

mag2555
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Re: performer 289 vs f4b

Post by mag2555 » Tue Oct 01, 2019 6:25 am

So that Intake Manifold let you use 203 cfm of what those Intake ports can flow to make that 418 hp.

Just for the record the most hp I have ever seen a Performer Intake allow a motor to make was 430, a Performer Intake for any brand motor I should note here also!

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Re: performer 289 vs f4b

Post by BobbyB » Tue Oct 01, 2019 9:19 am

Mag,

Are you talking performer or performer RPM?

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Re: performer 289 vs f4b

Post by mag2555 » Tue Oct 01, 2019 10:54 am

The Intake you used for your dyno session.

dondon
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Re: performer 289 vs f4b

Post by dondon » Tue Oct 01, 2019 11:56 am

I used the f4b intake, removed divider with a 1" open spacer. The cam was the bottom of the page elgin hydro roller in comp prods, 224/232 .542/563 112lc. the heads were untouched 9175s. Never tried the performer 289 on the dyno. The dyno carb was a 600 holley dp (not 4776), My 750 made a couple more hp and tq down low but nosed over sooner. The f4b had to be ground on the front intake runner for clearance on the hei I used. no hood clearance probelms on 65 falcon

BobbyB
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Re: performer 289 vs f4b

Post by BobbyB » Tue Oct 01, 2019 4:33 pm

Sounds like a great engine & a great car. Surprising that the 600 carb was better up top than a 750.
Have fun.

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Re: performer 289 vs f4b

Post by BobbyB » Wed Oct 02, 2019 2:10 pm

dondon,

What was your total timing for best power?

dondon
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Re: performer 289 vs f4b

Post by dondon » Wed Oct 02, 2019 6:55 pm

I never check TDC in relation to the piston at TDC and harmonic balancer, but started at 35 degrees 397.1 hp and 379.2 @ 5500. Then changed to 32 degrees and that pull went 383.3 tq and 401.4 hp @ 5500. It was 3-4 hp and tq more all the way up from 3000 at 32

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