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Re: 493" how much carb cfm needed??
[Re: 506RR]
#181316
01/02/09 08:52 AM
01/02/09 08:52 AM
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Joined: Jan 2003
Posts: 17,918
Akron, Ohio
ProSport
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,918
Akron, Ohio
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The 950HP worked great on my 451, although not quite as good as the 1050 Dominator, only by a couple hundredths and 2 MPH.
I would probably run a 1050 on your car but the 950 would be better on the street as already mentioned.
Does anybody here run a 1050 4150 carb? I've always wondered how they run compared to a Dommy on the street and strip.
1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
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Re: 493" how much carb cfm needed??
[Re: fiddlestix]
#181319
01/02/09 10:17 AM
01/02/09 10:17 AM
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Joined: Jan 2003
Posts: 16,928
NC
440Jim
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,928
NC
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Quote:
My question is how much actual carb cfm will it take to support this engine using a 4150 base?
As stated by others, the Dominator will be faster on the track. But I like the 4150 for the street.
The hard part is knowing what every companies carb actually flows (using the same standard). And I don't have that info. All 950's don't flow the same, and they don't even have the same venturi size! They all have 1.75" baseplate/butterfly, but Holley's venturi is 1.375, Proform 1.45" (their 850 is 1.40"), and who knows what custom carb shops are using in their 950, or 1000 cfm. The old style mod of machining off the choke horn from the main body is not as good as the more modern HP main bodies cast without the choke horn and a better transition.
My recommendation is to call ProSystems and have them setup one of their 950 or 1000 hp carbs.
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Re: 493" how much carb cfm needed??
[Re: 440Jim]
#181320
01/02/09 10:22 AM
01/02/09 10:22 AM
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Joined: Aug 2006
Posts: 614
Michigan
Get-X
mopar
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mopar
Joined: Aug 2006
Posts: 614
Michigan
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If you're going to use a 4150, make sure it's based off of the 850DP, like a 1000HP. As the others have already mentioned, the 1050 dommy will out perform the 4150 at the track and is still streetable.
'65 Belvedere
'68 GTX
'57 Dodge pickup
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Re: 493" how much carb cfm needed??
[Re: moparniac]
#181322
01/02/09 12:11 PM
01/02/09 12:11 PM
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Joined: Jan 2003
Posts: 9,876
Weddington, N.C.
Streetwize
master
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master
Joined: Jan 2003
Posts: 9,876
Weddington, N.C.
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I like the 1000hp on most 500's. I run a Pro-systems 1000HP 4150 on my 517 that runs a Dommy 3 circuit metering block and it is FANTASTIC on the street. I've been giving serious thought to putting a big 1100+ Dommy on it but I don't know if the modest gains are worth the added cost....I think my days of chasing the last .05 of ET days are winding down......you can see more variation in performance just in the weather on any given day. Put the car on the Dyno and you may quickly see if the induction is really laying it down....but with Eddies and a Sreet Dominator I don't think you'll need anything more than a 1000HP.....I ran the same carb on my SD topped 508 jetted down a tad. Dyno time is relatively cheap for the wealth of knowledge about your combination you can get from it. 
Last edited by Streetwize; 01/02/09 12:15 PM.
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