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Re: A little science project [[[ updated]]]]
[Re: WHITEDART]
#2428017
01/02/18 10:37 PM
01/02/18 10:37 PM
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Joined: Jan 2005
Posts: 2,540
Milwaukee WI
TRENDZ
master
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master
Joined: Jan 2005
Posts: 2,540
Milwaukee WI
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Found a before/after of a GT40 lower I fixed for a friend.
"use it 'till it breaks, replace as needed"
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Re: A little science project [[[ updated]]]]
[Re: TRENDZ]
#2428040
01/02/18 11:28 PM
01/02/18 11:28 PM
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Joined: Oct 2011
Posts: 3,036
bean town ....Ca
WHITEDART
OP
master
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OP
master
Joined: Oct 2011
Posts: 3,036
bean town ....Ca
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Thank you for the compliments by the looks of your workmanship you do good work as well
In the 8s N/A.with Brett miller W8's
5.07 at 133 at 2700lb
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Re: A little science project
[Re: Al_Alguire]
#2429668
01/05/18 10:58 PM
01/05/18 10:58 PM
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Joined: Oct 2011
Posts: 3,036
bean town ....Ca
WHITEDART
OP
master
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OP
master
Joined: Oct 2011
Posts: 3,036
bean town ....Ca
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It's hard to believe December 21st..I cut this intake manifold in half. It's been across the country and back.. and now it's back on the motor thank you very much Brett.. your work is amazing and second to none..
In the 8s N/A.with Brett miller W8's
5.07 at 133 at 2700lb
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Re: A little science project
[Re: WHITEDART]
#2429876
01/06/18 01:22 PM
01/06/18 01:22 PM
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Joined: Jan 2003
Posts: 19,375
Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,375
Las Vegas
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Anxious to see what happens on the dyno but more importantly how the car accelerates at the track...
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: A little science project
[Re: WHITEDART]
#2429889
01/06/18 01:41 PM
01/06/18 01:41 PM
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Joined: Aug 2008
Posts: 4,072
Mo.
racerx
master
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master
Joined: Aug 2008
Posts: 4,072
Mo.
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Re: A little science project
[Re: Al_Alguire]
#2429896
01/06/18 01:48 PM
01/06/18 01:48 PM
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Joined: Jul 2004
Posts: 19,318
State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
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Anxious to see what happens on the dyno but more importantly how the car accelerates at the track... I still think the big 2000 cfm carb is over kill and hurting performance at the track maybe not on the dyno but hopefully it gets tuned in better for ya..............
Last edited by Thumperdart; 01/06/18 01:48 PM.
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: A little science project
[Re: WHITEDART]
#2429926
01/06/18 02:13 PM
01/06/18 02:13 PM
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Joined: Jan 2003
Posts: 19,375
Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,375
Las Vegas
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We have tried alot of carb set ups on the Vette. We started with a 4150!!! Unfortunately only one way to find out what works. Also you can stack spacer to the roof of the dyno and maybe make more power but velocity and efficiency especially down low may kill the cars ET. We have used 2.30, 2.40, 2.45, 2.50. Our issues with the larger carbs has been the deck height of the engine. Possibly with a shorter deck we could take more advantage of the bigger carbs. So far the 2.40 has been the fast one. But we have had probably 8 different booster packages and 4 different metering blocks in it as well. We will likely be trying the 2.45 again this year with the shorter deck and are expecting it to be faster. We will find out soon as the block is about done to shorten the deck height to closer to the other small block we run against. Those seem to be where the really big carbs shine.
I believe Shiloh and the Vette run the same cube engine 417?!?
Ultimately the dyno is a tool and you need to be able to interpret what the tool is telling you. Interpreting that data and applying it to the racecar on track are always the hard part.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: A little science project
[Re: Al_Alguire]
#2429959
01/06/18 02:44 PM
01/06/18 02:44 PM
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Joined: Oct 2011
Posts: 3,036
bean town ....Ca
WHITEDART
OP
master
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OP
master
Joined: Oct 2011
Posts: 3,036
bean town ....Ca
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We have tried alot of carb set ups on the Vette. We started with a 4150!!! Unfortunately only one way to find out what works. Also you can stack spacer to the roof of the dyno and maybe make more power but velocity and efficiency especially down low may kill the cars ET. We have used 2.30, 2.40, 2.45, 2.50. Our issues with the larger carbs has been the deck height of the engine. Possibly with a shorter deck we could take more advantage of the bigger carbs. So far the 2.40 has been the fast one. But we have had probably 8 different booster packages and 4 different metering blocks in it as well. We will likely be trying the 2.45 again this year with the shorter deck and are expecting it to be faster. We will find out soon as the block is about done to shorten the deck height to closer to the other small block we run against. Those seem to be where the really big carbs shine.
I believe Shiloh and the Vette run the same cube engine 417?!?
Ultimately the dyno is a tool and you need to be able to interpret what the tool is telling you. Interpreting that data and applying it to the racecar on track are always the hard part. 419.9 now
In the 8s N/A.with Brett miller W8's
5.07 at 133 at 2700lb
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Re: A little science project
[Re: Al_Alguire]
#2430158
01/06/18 08:32 PM
01/06/18 08:32 PM
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Joined: Oct 2011
Posts: 3,036
bean town ....Ca
WHITEDART
OP
master
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OP
master
Joined: Oct 2011
Posts: 3,036
bean town ....Ca
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We have tried alot of carb set ups on the Vette. We started with a 4150!!! Unfortunately only one way to find out what works. Also you can stack spacer to the roof of the dyno and maybe make more power but velocity and efficiency especially down low may kill the cars ET. We have used 2.30, 2.40, 2.45, 2.50. Our issues with the larger carbs has been the deck height of the engine. Possibly with a shorter deck we could take more advantage of the bigger carbs. So far the 2.40 has been the fast one. But we have had probably 8 different booster packages and 4 different metering blocks in it as well. We will likely be trying the 2.45 again this year with the shorter deck and are expecting it to be faster. We will find out soon as the block is about done to shorten the deck height to closer to the other small block we run against. Those seem to be where the really big carbs shine.
I believe Shiloh and the Vette run the same cube engine 417?!?
Ultimately the dyno is a tool and you need to be able to interpret what the tool is telling you. Interpreting that data and applying it to the racecar on track are always the hard part. Al if I could drag you out to the track.. and get you to give me some pointers & advise.. you could probably save me a couple years worth of headaches.. Miss steps and.. heartaches... and broken pieces.. there seems to be some interest growing for the naturally-aspirated Grudge racing on the West Coast.. I just don't know what it would take to get you out there.. especially on the counter of you live on the other side of the country currently
In the 8s N/A.with Brett miller W8's
5.07 at 133 at 2700lb
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Re: A little science project
[Re: Al_Alguire]
#2430496
01/07/18 02:17 PM
01/07/18 02:17 PM
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Joined: Jan 2003
Posts: 1,784
PA
W5DART66
top fuel
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top fuel
Joined: Jan 2003
Posts: 1,784
PA
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Anxious to see what happens on the dyno but more importantly how the car accelerates at the track... Al The intake runner was to long with the spacers I did not shorten the runner of a 420 at all. We just added Plenum Volume to a "420" And positioned carb boosters over each pair of runners better. I think it will accelerate better but.... ever know🙃 Untill you try things. Testing I have done shows this should be good improvement 👍🏻
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