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12-03-2010, 10:51 PM | #1 |
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Join Date: Oct 2006
Location: bridgecreek ok.
Posts: 1,214
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drop member and drag racing
If i lower my truck on the front from a 2.5" to a 3.5" and the rear from a 4" to a 6", will i need a drop member for drag racing? Just want to make sure the aluminum driveshaft doesn't hit. I already have shock relocators on it and the adjustable trac bar...
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http://67-72chevytrucks.com/vboard/s...d.php?t=494388 431 big block times, changed to a 6.0 ls with turbo 1.58- 60' 7.18- 1/8th mile@95.18 11.37- 1/4 @115.81 |
12-03-2010, 11:39 PM | #2 |
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Join Date: Apr 2005
Location: Pensacola, FL
Posts: 17,858
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Re: drop member and drag racing
Mine's lowered 6.5 in the rear and I still have good clearance. I'm getting ready to add a drop member though, so I can have the exhaust cutouts and center the rear wheel better in the wheel opening.
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Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3 |
12-03-2010, 11:46 PM | #3 |
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Join Date: Oct 2006
Location: bridgecreek ok.
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Re: drop member and drag racing
mine is centered perfect, and i got a knockout set and knocked out some 4" holes in my existing crossmember...
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http://67-72chevytrucks.com/vboard/s...d.php?t=494388 431 big block times, changed to a 6.0 ls with turbo 1.58- 60' 7.18- 1/8th mile@95.18 11.37- 1/4 @115.81 |
12-05-2010, 02:44 AM | #4 |
Mean Green
Join Date: Sep 2007
Location: Portland, OR
Posts: 522
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Re: drop member and drag racing
I went with the Drop member and had Him put a offset in the lower loop.
Mainly because of the 5" drive line OD. I didn't have any down ward suspension travel before the drive shaft was resting on the cross member. This is also a excellent piece do to the adjustment you get out of it. With that and a pair of coil overs I think a truck should hook good with a little tuning.
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427 SBC 683HP & 590ftlbsTRQ @ fly wheel. 60'-1.38 1/4-10.43 MPH-124.6 New ET current 4/2019 AKA MEAN GREEN. |
12-05-2010, 10:01 AM | #5 |
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Join Date: Oct 2006
Location: bridgecreek ok.
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Re: drop member and drag racing
where did you get your dropmember?
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http://67-72chevytrucks.com/vboard/s...d.php?t=494388 431 big block times, changed to a 6.0 ls with turbo 1.58- 60' 7.18- 1/8th mile@95.18 11.37- 1/4 @115.81 |
12-05-2010, 11:18 AM | #6 |
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Join Date: Apr 2005
Location: Pensacola, FL
Posts: 17,858
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Re: drop member and drag racing
Looks like a Porterbuilt one.
BOOMER!!
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Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3 |
12-05-2010, 11:21 AM | #7 |
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Join Date: Oct 2006
Location: bridgecreek ok.
Posts: 1,214
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Re: drop member and drag racing
thanks...
Sooner
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http://67-72chevytrucks.com/vboard/s...d.php?t=494388 431 big block times, changed to a 6.0 ls with turbo 1.58- 60' 7.18- 1/8th mile@95.18 11.37- 1/4 @115.81 |
12-05-2010, 01:04 PM | #8 |
Mean Green
Join Date: Sep 2007
Location: Portland, OR
Posts: 522
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Re: drop member and drag racing
Hell yes is a PORTER BUILT!
Its Rocks. Way better than the CCP one I had previous. Nate and his shop builds real nice stuff. It goes in real easy. The old one might be a hassle getting it out. couple of the upper rivets are a pain.
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427 SBC 683HP & 590ftlbsTRQ @ fly wheel. 60'-1.38 1/4-10.43 MPH-124.6 New ET current 4/2019 AKA MEAN GREEN. |
12-05-2010, 01:42 PM | #9 |
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Join Date: Nov 2007
Location: Bay Area, Ca
Posts: 2,841
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Re: drop member and drag racing
I know Porter build some good stuff, but I have a couple questions...
Is there really any added benifit over a modified stock x-member? For instance, I think I made my adjustable lower control arm mounts prior to the cross member being available. So is there an advantage to porters over what I did? I know the exhaust can pass through, but I can easily cut mine a little bigger with my plasma and clean it up with a flapper wheel, so is there an advantage to his unit there? The next I'd point out is weight. His piece is definately built well and looks heavier than the factory piece. Is that the case? I guess in racing that would be a down fall.. Now I'm not trying to knock his piece at all.. So please don't take it that way. I'm just wondering if it would have any added benifits for someone in my position who has already modified there OE piece.
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------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49 |
12-05-2010, 05:35 PM | #10 |
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Join Date: Oct 2006
Location: bridgecreek ok.
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Re: drop member and drag racing
check this one out. I emailed nolimit to see if they would just sell the crossmember. I wouldn't have to undo the exhaust, just the driveshaft...
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http://67-72chevytrucks.com/vboard/s...d.php?t=494388 431 big block times, changed to a 6.0 ls with turbo 1.58- 60' 7.18- 1/8th mile@95.18 11.37- 1/4 @115.81 |
12-05-2010, 07:40 PM | #11 | |
Mean Green
Join Date: Sep 2007
Location: Portland, OR
Posts: 522
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Re: drop member and drag racing
Quote:
I think his piece did way weigh less.
__________________
427 SBC 683HP & 590ftlbsTRQ @ fly wheel. 60'-1.38 1/4-10.43 MPH-124.6 New ET current 4/2019 AKA MEAN GREEN. |
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12-05-2010, 07:43 PM | #12 | |
Mean Green
Join Date: Sep 2007
Location: Portland, OR
Posts: 522
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Re: drop member and drag racing
Quote:
You should check it out.
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427 SBC 683HP & 590ftlbsTRQ @ fly wheel. 60'-1.38 1/4-10.43 MPH-124.6 New ET current 4/2019 AKA MEAN GREEN. |
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12-05-2010, 07:50 PM | #13 |
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Join Date: Apr 2005
Location: Pensacola, FL
Posts: 17,858
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Re: drop member and drag racing
I think his setup will allow you to adjust your pinion angle also...
68Kid - Does the rear sway bar help much?
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Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3 Last edited by Hart_Rod; 12-05-2010 at 07:50 PM. |
12-05-2010, 07:59 PM | #14 | |
Mean Green
Join Date: Sep 2007
Location: Portland, OR
Posts: 522
|
Re: drop member and drag racing
Quote:
It works great for the road and the track. It seams to make the truck plant the foot print more square. Only thing it makes the truck feel like the tires are a little more bound around tight turns with the spool. I would like to build a set up like some the other guys are doing with the anti roll bar's.
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427 SBC 683HP & 590ftlbsTRQ @ fly wheel. 60'-1.38 1/4-10.43 MPH-124.6 New ET current 4/2019 AKA MEAN GREEN. |
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12-09-2010, 02:52 AM | #15 |
Registered User
Join Date: Nov 2007
Location: Bay Area, Ca
Posts: 2,841
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Re: drop member and drag racing
68 C-10 Kid is right.. It adjusts pinion angle only with the arc change of the arm. So as it adjusts instant center it inherantly adjusts pinion at the same time, but you can not adjust them seperately.
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------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49 |
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