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Badvert65
 Post subject: 4 bbl intakes?
PostPosted: Mon Feb 08, 2016 5:31 pm 
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Turbo EFI
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Car Model: 1965 Plymouth Belvedere I
Is the Offenhauser 5270LK single 4bbl intake worthwhile? I don't really want to spend the cash on one of the Aussie intakes (and shipping).
This would be primarily for drag racing.

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Reed
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PostPosted: Mon Feb 08, 2016 5:36 pm 
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If you are doing it just for drag racing, go with a Clifford. The Clifford have a larger runner crosssection and flow a bit better than the Offy.

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DusterIdiot
 Post subject: Yep...
PostPosted: Mon Feb 08, 2016 6:05 pm 
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The Clifford have a larger runner cross section and flow a bit better than the Offy.

Agreed. You will be looking at Clifford shorty manifold, and headers.

Offy is fine for the street, or mild street strip vehicle.
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slantzilla
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PostPosted: Mon Feb 08, 2016 6:39 pm 
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How fast are you wanting to go?

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Badvert65
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PostPosted: Mon Feb 08, 2016 7:03 pm 
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I'm a Mopar guy...too fast is not enough.

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slantzilla
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PostPosted: Tue Feb 09, 2016 12:06 am 
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If you are trying to build a 14 second car you can live with an Offy quite well. Any faster than that get a Clifford.

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DusterIdiot
 Post subject: Lol...
PostPosted: Tue Feb 09, 2016 6:28 am 
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f you are trying to build a 14 second car you can live with an Offy quite well. Any faster than that get a Clifford.

Remember, he's racing a '65 Belvedere...so he's a bit bigger and heavier than even a late A-body...to push it into the 14's without an adder, he needs all the help he can get... he should be pursuing the clifford intake,headers and a Jeffries head, if he's serious about being race only.
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Badvert65
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PostPosted: Tue Feb 09, 2016 7:09 am 
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Location: Brightwood, VA
Car Model: 1965 Plymouth Belvedere I
Race weight will be just over 3200 lbs (with driver). I have a set of Clifford headers and a ported big valve head. Compression ration comes in at 10.6 with thick head gasket, right at 11:1 with a thin steel one. I have two different cams, biggest one yields .474-I/.494-E at the valve. Still debating the converter, but am leaning towards a 2500-2700 stall for a race built, manual valve body 904 (75 vintage). I have 3.55 gears in it but have a set of 3.91 on standby (both sure-grips). Currently setting up a twin 2bbl intake but feel a single 4bbl may give better results.
I am aiming for the D/G record so I'll need to best 14.1@97mph to set that. (Unless that has changed)

I can't sneak anything past you guys....
14 weeks to the Mason-Dixon race, oof!

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slantzilla
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PostPosted: Tue Feb 09, 2016 8:59 am 
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At 3200# you'll need more cam and converter, and 3.91 gears at least. 14.99 is easy, 14.1 is expensive. :D

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Badvert65
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PostPosted: Tue Feb 09, 2016 9:26 am 
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I don't think anything is easy with only 225 cubes. I managed to get my 4200 lb (+ driver) 65 Fury to run low 12's in the quarter but that was with twice as many cubic inches.
It's good to have a goal in mind.
If it was easy, everyone would be doing it.

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slantzilla
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PostPosted: Tue Feb 09, 2016 10:08 am 
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I have done it. It's not hard, just expensive, and it's not a good retirement plan. :lol: :lol: :lol: :lol: :lol:

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Dart270
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PostPosted: Tue Feb 09, 2016 10:29 am 
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Easy is for bums. The challenge is the fun way.

Clifford 4 bbl is your best bet.

Lou

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slantzilla
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PostPosted: Tue Feb 09, 2016 11:02 am 
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Easy is for bums.

Lou
And old men. :D

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Badvert65
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PostPosted: Tue Feb 09, 2016 12:07 pm 
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I have done it. It's not hard, just expensive, and it's not a good retirement plan. :lol: :lol: :lol: :lol: :lol:
Do me a favor and do NOT talk to my wife.

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slantzilla
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PostPosted: Tue Feb 09, 2016 4:46 pm 
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:lol: :lol: :lol: :lol: :lol:

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