Fastest Big Cube 427
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Drifting
Joined: Dec 2003
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Fastest Big Cube 427
Would like to hear of some of our forum members timeslips....one certain member "WITHOUT SPRAY", claims with a 3.90 gear, all the bolt ons, drag pack etc....135 mph at 10.15...which I am very impressed with. Is anybody else close?? I consider this the ultimate set up...
NCM, WSCC & SCC Member
Joined: Oct 2002
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Originally Posted by VLBBZ06
Would like to hear of some of our forum members timeslips....one certain member "WITHOUT SPRAY", claims with a 3.90 gear, all the bolt ons, drag pack etc....135 mph at 10.15...which I am very impressed with. Is anybody else close?? I consider this the ultimate set up...
Yes, it is correct.
Both he and that car are all that.
There maybe 2-3 others that are close with similar setups.
Intermediate
Joined: Nov 2004
Posts: 34
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From: Fort Myers Florida
My friend John Lawson's got a 2000 C5 with a Cartek 427 N/A and the factory auto. Without many other mods, last time we talked he drove the car to the track, left it in Drive, ran 10.30s, and drove it home. He still gets over 20mpg on the highway too!
Burning Brakes
Joined: Aug 1999
Posts: 945
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From: Toronto, Canada Ontario
St. Jude Donor "08
Hey Vince, I just did a 427 LS7 and since I'm in your backyard I figure I should let you know how it does. We just got it running, numbers next week...Here's a thread on it:
http://www.ls1tech.com/forums/showth...72#post5385672
http://www.ls1tech.com/forums/showth...72#post5385672
Burning Brakes
Joined: Aug 2002
Posts: 929
Likes: 1
From: West Palm Beach FL
Originally Posted by SLED28
Hey Vince, I just did a 427 LS7 and since I'm in your backyard I figure I should let you know how it does. We just got it running, numbers next week...Here's a thread on it:
http://www.ls1tech.com/forums/showth...72#post5385672
http://www.ls1tech.com/forums/showth...72#post5385672
W/ 3.73s and the A4 I should still be able to run 9s this fall w/ the drag pack, I imagine you should do the same.
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Thread Starter
Drifting
Joined: Dec 2003
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427
thanks for the reply sled...but I am very happy with my motor...and will hopefully not have to open it up for 5-6 years....I may do a cam, gear and fast intake next year though...but I am very content with it right now...just dynoed 450 rwhp and 470 tq recently with cats...good enough for me.....
Burning Brakes
Joined: Aug 1999
Posts: 945
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From: Toronto, Canada Ontario
St. Jude Donor "08
Originally Posted by VLBBZ06
thanks for the reply sled...but I am very happy with my motor...and will hopefully not have to open it up for 5-6 years....I may do a cam, gear and fast intake next year though...but I am very content with it right now...just dynoed 450 rwhp and 470 tq recently with cats...good enough for me.....
Burning Brakes
Joined: Aug 2002
Posts: 929
Likes: 1
From: West Palm Beach FL
Originally Posted by SLED28
Why the intake leak, is it at the ports? We are hoping for good numbers, but I think the intakes are restricting the 427+ cube motors
So, under high speed conditions the vacuum will be less producing more power than on the dyno, but to ultimately fix the problem I would need a harrop intake or something able to flow that well. I'm just not willing to dump the money into a harrop, or go sheetmetal as I am fully street legal and play in street war nights.
Burning Brakes
Joined: Aug 1999
Posts: 945
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From: Toronto, Canada Ontario
St. Jude Donor "08
Originally Posted by jdetar
It's not a leak, there's just not enough available air with the intake. It's just a vararam with a larger bridge, TB, and LS7 intake. Between the big built 447, true dual 3" exhaust, etc, when tuning it was showing a 4% power loss (or approx 24HP at the rate we're at) due to the vacuum.
So, under high speed conditions the vacuum will be less producing more power than on the dyno, but to ultimately fix the problem I would need a harrop intake or something able to flow that well. I'm just not willing to dump the money into a harrop, or go sheetmetal as I am fully street legal and play in street war nights.
So, under high speed conditions the vacuum will be less producing more power than on the dyno, but to ultimately fix the problem I would need a harrop intake or something able to flow that well. I'm just not willing to dump the money into a harrop, or go sheetmetal as I am fully street legal and play in street war nights.
Burning Brakes
Joined: Aug 2002
Posts: 929
Likes: 1
From: West Palm Beach FL
Well, Julio said on the dyno we saw a 4% vacuum, so I'm assuming that was at WOT. I don't have the new dyno sheet yet, but last year we pulled to 7K. I'm not sure if this changed or not.