performer 289 vs f4b

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dondon
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performer 289 vs f4b

Post by dondon »

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.
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Re: performer 289 vs f4b

Post by Mummert »

F4B. If you have can get your hands on an Air Gap they're better.
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Re: performer 289 vs f4b

Post by mag2555 »

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.
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Re: performer 289 vs f4b

Post by dondon »

it has 3.25 gears and a 3300-3500 convertor and a 735 holley
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Re: performer 289 vs f4b

Post by mag2555 »

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

Post by dondon »

dyno results, made 418 hp @ 6000 and 408 tq @ 4500, f4b. didn't use performer.
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Re: performer 289 vs f4b

Post by travis »

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?
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Re: performer 289 vs f4b

Post by BobbyB »

What carb did you use don Don?
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Re: performer 289 vs f4b

Post by mag2555 »

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 »

Mag,

Are you talking performer or performer RPM?
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Re: performer 289 vs f4b

Post by mag2555 »

The Intake you used for your dyno session.
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Re: performer 289 vs f4b

Post by dondon »

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
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Re: performer 289 vs f4b

Post by BobbyB »

Sounds like a great engine & a great car. Surprising that the 600 carb was better up top than a 750.
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Re: performer 289 vs f4b

Post by BobbyB »

dondon,

What was your total timing for best power?
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Re: performer 289 vs f4b

Post by dondon »

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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