Lowbuck Shop/Race Truck Build

[vortecpro]

[quote=vortecpro post_id=936329 time=1675198590 user_id=899

My truck weighs 3970 race ready,

I thought it would be heavier than that. Have you lightened it any?
[/quote]

It has light rims, tires, and engine, trans, but it has serious weight in the front brake rotors, rear brake drums, and a ridiculous 2 piece drive shaft it takes a crane to lift. I haven't gone around drilling holes, or stuff like that. Ultimately it needs to be shortened, then a carbon fibre driveshaft, and then Lamb front brakes, then we have a 10 sec shop truck, BUT I'm content how it is, after all I only have three passes on it, I'm sure I can find a little more. I really like driving it around town, fortunate to be able to do this stuff!

[vortecpro]

Am i right that those 1/8 mile times calculate to about 11.35 ? Quarter mile ? Impressive ! Good work !
Brian

From the runs I've made I feel comfortable figuring 11.50.

[vortecpro]

Leaf spring damageIMG_0939.jpg

Cut that end bit off. I'm not a leafspring expert but when I looked into them, pretty sure for drag-race you clamp the front and leave/remove the rear for it to expand to help with traction.

edit: For the street then clamp the rear, easy enough to remove at/before the track.

I will post pictures of what I plan to do.

[ClassicComp]

Still have the Buick?

[vortecpro]

Yes-I still have the Buick.

[bpenrod]

[quote=vortecpro post_id=936329 time=1675198590 user_id=899

My truck weighs 3970 race ready,

I thought it would be heavier than that. Have you lightened it any?

It has light rims, tires, and engine, trans, but it has serious weight in the front brake rotors, rear brake drums, and a ridiculous 2 piece drive shaft it takes a crane to lift. I haven't gone around drilling holes, or stuff like that. Ultimately it needs to be shortened, then a carbon fibre driveshaft, and then Lamb front brakes, then we have a 10 sec shop truck, BUT I'm content how it is, after all I only have three passes on it, I'm sure I can find a little more. I really like driving it around town, fortunate to be able to do this stuff!
[/quote]

After a little research they weren't as heavy as I thought they were. For some reason I was thinking full sized pickups were heavier than that.

[Monza355]

Congratulations Mark it’s a great project you’ve got going and thanks for sharing the results with us. What converter and stall speed do you run in the truck ?

[vortecpro]

Thanks, I run a race prepped std weight T 350, with a 8 inch ATI converter, after my next outing I can tell you the converter flash, I got my go pros now and I will be in race trim next time out, in hopefully great conditions, I want some of that 30.0 baro.

[1980RS]

Thanks, I run a race prepped std weight T 350, with a 8 inch ATI converter, after my next outing I can tell you the converter flash, I got my go pros now and I will be in race trim next time out, in hopefully great conditions, I want some of that 30.0 baro.

I think one day, I'm going to have to try out one of those ATI converters.

[vortecpro]

Thanks, I run a race prepped std weight T 350, with a 8 inch ATI converter, after my next outing I can tell you the converter flash, I got my go pros now and I will be in race trim next time out, in hopefully great conditions, I want some of that 30.0 baro.

I think one day, I'm going to have to try out one of those ATI converters.

ATI changed the shell/case design on their converters, no good any more, don't waste your money. You might want to look at my transmission. I use Len Schneider or Kenny for converters, and have since Jim Beattie of ATI died, his kids took over, and like always, its not the same company.

[Monza355]

Thanks, I run a race prepped std weight T 350, with a 8 inch ATI converter, after my next outing I can tell you the converter flash, I got my go pros now and I will be in race trim next time out, in hopefully great conditions, I want some of that 30.0 baro.

I think one day, I'm going to have to try out one of those ATI converters.

ATI changed the shell/case design on their converters, no good any more, don't waste your money. You might want to look at my transmission. I use Len Schneider or Kenny for converters, and have since Jim Beattie of ATI died, his kids took over, and like always, its not the same company.

That’s very interesting. What has changed to the worse with their 8” converters ?

[maxracesoftware]

Mark_Jones_SBC291_cast_iron_Cylinder Heads Flow Test Data

Mark_Jones_SBC291_cast_iron_out_the_box_shape_May_21_2022.jpg

Mark_Jones_SBC291_cast_iron_after_Porting_Cyl4_Test_1_June_4_2022.jpg

Mark_Jones_SBC291_cast_iron_after_Porting_Cyl6_Test_1_June_4_2022.jpg

 
i had 1 #291 casting i Ported to duplicate how i Ported Mark's #291's
to make sure Mark's Heads had plenty of metal left for Street/Strip use,
so i went from 2.055/1.600 Valve Combo to 2.080 Intake Valve + more Port work
then i took it the 2.080 Porting all the way to breaking thru into Water Jacket bridge between Intake and Exhaust Valves
to be bery sure there was plenty metal there for Mark's 2.055 Port Job
here are Intake Bowl Templates :

VORTECPRO 291 SBC Heads Intake Bowl Templates.jpg

291_SBC_Meaux_Test_Head_Test_3_June_2_2022.jpg

[maxracesoftware]

291 SBC Heads FlowTest OEM As Cast.jpg

291 SBC Heads Pushrod Holes Milling.jpg

291 SBC HeadsValve Job.jpg

291 SBC Heads Intake Valves BackCut.jpg

VORTECPRO 291 SBC Heads Chambers Bowls.jpg

VORTECPRO 291 SBC Heads Exhaust Ports.jpg

VORTECPRO 291 SBC Heads Inside Exhaust Ports.jpg

[maxracesoftware]

VORTECPRO 291 SBC Heads inside Intake Ports.jpg

VORTECPRO 291 SBC Heads CloseUp Chamber.jpg

VORTECPRO 291 SBC Heads Intake Bowl and Port.jpg

Re: 350 Vortec Head Track Test Update
Post by vortecpro » Thu Feb 23, 2023 7:47 pm
Thanks for the great info, I thought it was around 470 HP, I was close.
It would really be nice if you could run the numbers
on that truck you had your hands on the Heads !
1.56. 60
7.22. 330
93.15. MPH
3970 weight
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VORTECPRO Lowbuck Shop Race Truck Build ETA Weather.jpg

VORTECPRO Lowbuck Shop Race Truck Build ETA 1.jpg

VORTECPRO Lowbuck Shop Race Truck Build ETA Results.jpg

 

[vortecpro]

Nice work, showing 514 HP in a 29.52 Baro, not bad. Your porting was well spent money!