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Update: Cam Swap

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Old Aug 16, 2016 | 11:31 AM
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Default Update: Cam Swap

I have a few weeks on my LQ4 with the new cam...I installed the Texas Speed MS4, Springs and Push-Rods into my "stock un-touched" 6.0
Very PLEASED with the results so far...LQ4, 650 Carbed, Holley Intake, 1 3/4" headers, PowerGlide (5500 stall), 4.30 gears, 28" tall tire, 3010#
still playing with timing and the launch rpm's, but best et so far 11.33 @119.7 from 12.05 @ 110......................only from the cam change, and racing in 90 degree weather. I currently have the 317 heads on, but will change to the 243's.
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Old Aug 17, 2016 | 12:38 PM
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With that big of a stall I assume this is an all out race car? Nice times.
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Old Aug 18, 2016 | 01:41 AM
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Just send your 317's to Advanced Induction for their 232cc CNC program. I think they would do nicely with this engine combination and that stall.
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Old Aug 18, 2016 | 02:26 AM
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That's a nice improvement. I think you would see a nice improvement if you put a bigger carb on it too. I could understand the 650 if it were a manual street car, but with an auto and that loose of a converter, I would have at least a 750 on there.
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Old Aug 18, 2016 | 08:15 AM
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If u have any ptv room, cut the heads. You need more compression
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Old Aug 18, 2016 | 09:49 AM
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What's the race weight ?
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Old Aug 18, 2016 | 01:48 PM
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He said it was 3010#.

And I also think being closer to ~11.5:1 static compression would help everything.
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Old Aug 19, 2016 | 06:46 AM
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Yes, total Bracket Drag Car only, would like to get the compression up to 11 11 1/2 range. Woulld also like to see some mid 10's eventually. I can take another 350# out of the car too. I will change the converter to a 4500 and swap the carb to at least a 750 alky for next season.
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Old Aug 20, 2016 | 01:46 AM
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Originally Posted by LS-Vega
Yes, total Bracket Drag Car only, would like to get the compression up to 11 11 1/2 range. Woulld also like to see some mid 10's eventually. I can take another 350# out of the car too. I will change the converter to a 4500 and swap the carb to at least a 750 alky for next season.
sounds like a lot of change, hope everything goes well

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Old Aug 20, 2016 | 10:08 AM
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How much was invested in weight modifications ?
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Old Aug 22, 2016 | 11:11 AM
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Originally Posted by hfthe3rd
How much was invested in weight modifications ?
My original front bumper weighs 60# rear is 50# a fiberglass frt/rr are 4# each and cost $125 each, the front wheel and tire combo is 52# each (steel rallies and Sportsman fronts), I bought some Convo Pros with Front Runners for $200, and they weigh 12# each, the doors have a 48# crash bar in each side, and there's a few misc. brackets here and there to cut off from the engine compartment. And I can stand to loose 25 or so.
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Old Aug 22, 2016 | 12:07 PM
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Nice. I have a soft spot for Vega's!
Had a few in my day.
Must be a 74 or later with the 5mph bumpers?

Got a photo?

Ron
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Old Aug 22, 2016 | 12:49 PM
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Originally Posted by RonSSNova
Nice. I have a soft spot for Vega's!
Had a few in my day.
Must be a 74 or later with the 5mph bumpers?

Got a photo?

Ron
She's a '76 Was an Original Cosworth
Attached Thumbnails Update: Cam Swap-1976_vega.jpg   Update: Cam Swap-rsz_ls1.jpg  
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Old Aug 22, 2016 | 01:54 PM
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A 4777 carb complete with choke plate still intact.
An AED 750 on a tapered spacer and a point of compression would put
You into the 10.80s with ease

Last edited by A.R. Shale Targa; Aug 22, 2016 at 02:09 PM.
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Old Aug 23, 2016 | 08:36 PM
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Originally Posted by A.R. Shale Targa
A 4777 carb complete with choke plate still intact.
An AED 750 on a tapered spacer and a point of compression would put
You into the 10.80s with ease



I'm definitely interested in trying a larger carb, not too much room for a spacer with the stock hood.
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Old Aug 23, 2016 | 10:59 PM
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Originally Posted by LS-Vega
I'm definitely interested in trying a larger carb, not too much room for a spacer with the stock hood.
Without the choke tower might have a smidge more room for just a 1" Super Sucker


I've used this one for 5-600 hp apps
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