Desktop dyno///Estimated HP
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Member
Joined: Sep 2001
Posts: 400
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From: Buffalo, N.Y
Car: 1983 Z28 Clone
Engine: 350
Transmission: TH350
Desktop dyno///Estimated HP
Hey guys, well the 305 is gone......
I have a 72 350
Some mods I have In mind are...
Edelbrock carb
Comp Cam solid 236/242 @ .050
Stealth Intake
Ported 305 heads Flow tested @ 243cfm@28" New 1.94 x1.50"vortec valves. 3 angle valve job new vortec seals Z28 performance springs. pinned studs
Edelbrock TES 1-5/8 headers
3" Catco
3" Flowmaster w/80 series
Compression Estimate at about 10:1
4.11 gears
3000 Stall
TH350
I have all of these parts except the converter,cam and intake...
I'm just curious as to what kind of power i'll be making.......
Rob
I have a 72 350
Some mods I have In mind are...
Edelbrock carb
Comp Cam solid 236/242 @ .050
Stealth Intake
Ported 305 heads Flow tested @ 243cfm@28" New 1.94 x1.50"vortec valves. 3 angle valve job new vortec seals Z28 performance springs. pinned studs
Edelbrock TES 1-5/8 headers
3" Catco
3" Flowmaster w/80 series
Compression Estimate at about 10:1
4.11 gears
3000 Stall
TH350
I have all of these parts except the converter,cam and intake...
I'm just curious as to what kind of power i'll be making.......
Rob
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Joined: Jan 2001
Posts: 7,164
Likes: 1
From: Someone owes me 10,000 posts
Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
Originally posted by Bort62
Come again ?
Come again ?
give me a min, I'll run you're setup thru. OH, what is your carb's cfm, I assume a 600? if you want me to enter the head data correct, what lift was that measured at, know any other data #s on the heads?
Last edited by Mark A Shields; Nov 3, 2002 at 10:35 PM.
Supreme Member
Joined: Jan 2001
Posts: 7,164
Likes: 1
From: Someone owes me 10,000 posts
Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
Originally posted by 350turbo411
Yes it is a 600CFM
I bought the heads yesturday from FBIRD
Yes it is a 600CFM
I bought the heads yesturday from FBIRD
what cam is that btw?
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Supreme Member
Joined: Jan 2001
Posts: 7,164
Likes: 1
From: Someone owes me 10,000 posts
Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
Originally posted by Bort62
Because that is alot of flow from a 305 Head.
AFR 190's for example. Only 20 CFM better.
I see those are F-birds "Magical" 305 heads, Interesting.
Because that is alot of flow from a 305 Head.
AFR 190's for example. Only 20 CFM better.
I see those are F-birds "Magical" 305 heads, Interesting.
Thread Starter
Member
Joined: Sep 2001
Posts: 400
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From: Buffalo, N.Y
Car: 1983 Z28 Clone
Engine: 350
Transmission: TH350
HMMMmmm.... the part number is 12-607-5 ill have to go to the web page Grind CS 270B-6
Last edited by 350turbo411; Nov 3, 2002 at 10:48 PM.
Supreme Member
Joined: Sep 2001
Posts: 6,111
Likes: 53
From: Ontario, Canada
Car: 1988 Firebird S/E
Engine: 406Ci Vortec SBC
Transmission: TH-350/3500stall
Axle/Gears: 7.5" Auburn 4.10 Posi-Traction
Here is the link for the camcard for that Comp Cams grind
http://www.compcams.com/information/...umber=12-607-5
You can phone Comp Cams toll free and they will tell you more about it.
I have all the computer simulation programs here and could give you some wild hp result.
You should take these programs with a grain of salt thou.
You should expect to make around 405 to 425 gross (dyno hp)
horsepower with that combination of parts. Should produce 325 to 335 net horspower in the car. should be good for 12.8? @ 106+ mph quarter mile times on slicks.
Remember what I said about port matching the manifold to the heads. This is critical.
Russ
http://www.compcams.com/information/...umber=12-607-5
You can phone Comp Cams toll free and they will tell you more about it.
I have all the computer simulation programs here and could give you some wild hp result.
You should take these programs with a grain of salt thou.
You should expect to make around 405 to 425 gross (dyno hp)
horsepower with that combination of parts. Should produce 325 to 335 net horspower in the car. should be good for 12.8? @ 106+ mph quarter mile times on slicks.
Remember what I said about port matching the manifold to the heads. This is critical.
Russ
Supreme Member
Joined: Sep 2001
Posts: 6,111
Likes: 53
From: Ontario, Canada
Car: 1988 Firebird S/E
Engine: 406Ci Vortec SBC
Transmission: TH-350/3500stall
Axle/Gears: 7.5" Auburn 4.10 Posi-Traction
Originally posted by Bort62
Because that is alot of flow from a 305 Head.
AFR 190's for example. Only 20 CFM better.
I see those are F-birds "Magical" 305 heads, Interesting.
Because that is alot of flow from a 305 Head.
AFR 190's for example. Only 20 CFM better.
I see those are F-birds "Magical" 305 heads, Interesting.
(prepareing them for a customers motor)
Well out of the box they were 255 cfm. After applying a lil' "magic"
we got them to 308 cfm.
Actually didn't require near as much work as these 305 heads.
But the work required and technique is basicly the same.
Yes these 305 heads can be improved to near "out of the box alumium head" flow, if someone is willing to put the work into it.
They also end up with a reasonable finished port volume,
which retaines the low end torque and throttle response of a smaller head. Some thing to consider.....
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quote:
--------------------------------------------------------------------------------
Originally posted by Bort62
Because that is alot of flow from a 305 Head.
https://www.thirdgen.org/techbb2/att...&postid=630921
AFR 190's for example. Only 20 CFM better.
I see those are F-birds "Magical" 305 heads, Interesting.
--------------------------------------------------------------------------------
On the weekend we were playing with a set of Brodix track1's
(prepareing them for a customers motor)
Well out of the box they were 255 cfm. After applying a lil' "magic"
we got them to 308 cfm.
Actually didn't require near as much work as these 305 heads.
But the work required and technique is basicly the same.
Yes these 305 heads can be improved to near "out of the box alumium head" flow, if someone is willing to put the work into it.
They also end up with a reasonable finished port volume,
which retaines the low end torque and throttle response of a smaller head. Some thing to consider.....
--------------------------------------------------------------------------------
Originally posted by Bort62
Because that is alot of flow from a 305 Head.
https://www.thirdgen.org/techbb2/att...&postid=630921
AFR 190's for example. Only 20 CFM better.
I see those are F-birds "Magical" 305 heads, Interesting.
--------------------------------------------------------------------------------
On the weekend we were playing with a set of Brodix track1's
(prepareing them for a customers motor)
Well out of the box they were 255 cfm. After applying a lil' "magic"
we got them to 308 cfm.
Actually didn't require near as much work as these 305 heads.
But the work required and technique is basicly the same.
Yes these 305 heads can be improved to near "out of the box alumium head" flow, if someone is willing to put the work into it.
They also end up with a reasonable finished port volume,
which retaines the low end torque and throttle response of a smaller head. Some thing to consider.....
Im sure you understand.
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