Stock Driveshaft capacity - The 1947 - Present Chevrolet & GMC Truck Message Board Network

miket · 09-30-2003, 10:36 PM

Just curious... anyone want to comment on max hp/tq that a stock lwb 2pc driveshaft will take before it breaks?

dinnut · 09-30-2003, 10:37 PM

prob over 300. if your driving normally. now if ur

then its gonna be all over the road. and youll be all

GMC JUNKIE TOO · 09-30-2003, 10:54 PM

Ive got over 400hp and drive

and mine is still intact.

Longhorn Man · 09-30-2003, 11:04 PM

I have seen a daily driver that ran 12's every weekend. He drove it like that for over a decade before it got totaled.
Other than a couple U-joints and C-bearings wearing out, he never had an issue witht eh driveshaft.

miket · 09-30-2003, 11:06 PM

I am just trying to prioirtize my funds for my truck was trying to guess when to count replacing it and having a bigger one built. I don't have any issues now but it doesn't hook up either.

palallin · 10-01-2003, 11:41 AM

Just rmember: U-joints are cheap. Virtually everything on either end of them is expensive.

miket · 10-01-2003, 11:47 AM

yeah last time i priced having a custom one built it was $500.

*rickspickuppart* · 10-01-2003, 05:13 PM

we have 900+hp with no problems

miket · 10-01-2003, 05:18 PM

Okay........what the heck are you runnin that has 900hp????

*rickspickuppart* · 10-01-2003, 05:32 PM

it's a 542ci Siamese cylinder, scat steel stroker crank, aluminum bowtie heads w/ a 1250cfm TPI. we use the truck mainly for advertising but when we built it we had Venolia cut a custom set of forged pistons @ 9.75 to 1 so we could burn premium pump fuel (and it uses alot of it about 2 mpg) without pinging so it could be driven to the shows and such.

[IMG]http://www.****************.com/boardpics/eng1.jpg[/IMG]

miket · 10-01-2003, 05:43 PM

What cam/heads?

How did you guys do it with no NOS/blower or turbo? and low compression?

*rickspickuppart* · 10-01-2003, 05:47 PM

give me a few minutes and I will give you a whole write up on it (lots of typing)

miket · 10-01-2003, 05:49 PM

Why don't you pm me? Then we won't take up the whole post.

*rickspickuppart* · 10-01-2003, 05:54 PM

Engine:

542 inch Prostock block from chevy

programable 1250 cfm TPI w/ 52 psi Injectors

1/4" stroker crank from Calles

9.1-1 comp 4.5000" custom made piston from venolia (I was mistaken on that one earlier)

Aluminum D port heads (2.130 Intake 1.88 exhaust) w/ manley SS valves

Comp roller cam (.556 lift 280 duration)

comp roller rockers

Fluid dampner

(It's been together for a few years so I am sure I forgot something)

*rickspickuppart* · 10-01-2003, 05:57 PM

sorry this is way off topic of the original thread, I didn't see your PM idea till after I hit "submit reply"

miket · 10-01-2003, 05:58 PM

thanks.

Longhorn Man · 10-02-2003, 12:08 AM

He isn't the only one that was wondering about 900 horsses.
Good info.
Have you had it down the 1320 yet? If it hooks up it should be pretty fun, but I think you'd be kicked off the track for lack of safety equipment after the first run huh?

*rickspickuppart* · 10-02-2003, 12:15 AM

it would get kicked and the tranny wouldn't stand it if it ever "hooked" up, just wait till truck 3 is done (it might take a couple years) w/ a merlin 705 and the drivetrain to back it up and it will be street legal (1400hp plus). We are starting to gather the pieces for the body now.

Shawn

miket · 10-02-2003, 12:17 AM

Shawn,

Well the next time I am down there visiting my in laws I will have to come and check you guys out!!!!!!

*rickspickuppart* · 10-02-2003, 12:19 AM

definetly do (most of the time people treat it like a car show w/ the customer jobs we got going on)

*rickspickuppart* · 10-02-2003, 12:22 AM

maybe when you are here we will go for a ride (it is always fun at 90mph in high gear at 1/3 throttle to start burning the tires)

Longhorn Man · 10-02-2003, 12:24 AM

Quote:

it is always fun at 90mph in high gear at 1/3 throttle to start burning the tires

DAYAM!!!!

09-30-2003, 10:36 PM	#1
miket Registered User Join Date: Jan 2003 Location: Seattle WA Posts: 1,466	Stock Driveshaft capacity Just curious... anyone want to comment on max hp/tq that a stock lwb 2pc driveshaft will take before it breaks? __________________ FocuzTech Performance Evergreen Protective Coatings Gatorhyde...the best kept secret in spray in bed lining & protection

09-30-2003, 10:37 PM	#2
dinnut Registered User Join Date: Apr 2003 Location: missouri city, tx Posts: 4,486	prob over 300. if your driving normally. now if ur then its gonna be all over the road. and youll be all __________________ 70 longbed 496/th400/Ford 9"

09-30-2003, 11:06 PM	#5
miket Registered User Join Date: Jan 2003 Location: Seattle WA Posts: 1,466	I am just trying to prioirtize my funds for my truck was trying to guess when to count replacing it and having a bigger one built. I don't have any issues now but it doesn't hook up either. __________________ FocuzTech Performance Evergreen Protective Coatings Gatorhyde...the best kept secret in spray in bed lining & protection

10-01-2003, 11:41 AM	#6
palallin Registered User Join Date: Jul 2002 Location: St. James, MO Posts: 1,238	Just rmember: U-joints are cheap. Virtually everything on either end of them is expensive. __________________ '69 Longstep K-10: 327/SM465/T-221/Closed Knuckle Dana44/12-bolt.

10-01-2003, 11:47 AM	#7
miket Registered User Join Date: Jan 2003 Location: Seattle WA Posts: 1,466	yeah last time i priced having a custom one built it was $500. __________________ FocuzTech Performance Evergreen Protective Coatings Gatorhyde...the best kept secret in spray in bed lining & protection

09-30-2003, 10:54 PM	#3
GMC JUNKIE TOO THE QUICKER FIXERUPER Join Date: Jul 2002 Location: Ok Posts: 615	Ive got over 400hp and drive and mine is still intact.

09-30-2003, 11:04 PM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	I have seen a daily driver that ran 12's every weekend. He drove it like that for over a decade before it got totaled. Other than a couple U-joints and C-bearings wearing out, he never had an issue witht eh driveshaft.

10-01-2003, 05:13 PM	#8
rickspickuppart Account Suspended Join Date: Jul 2003 Posts: 1,284	we have 900+hp with no problems

10-01-2003, 05:18 PM	#9
miket Registered User Join Date: Jan 2003 Location: Seattle WA Posts: 1,466	Okay........what the heck are you runnin that has 900hp???? __________________ FocuzTech Performance Evergreen Protective Coatings Gatorhyde...the best kept secret in spray in bed lining & protection

10-01-2003, 05:32 PM	#10
rickspickuppart Account Suspended Join Date: Jul 2003 Posts: 1,284	it's a 542ci Siamese cylinder, scat steel stroker crank, aluminum bowtie heads w/ a 1250cfm TPI. we use the truck mainly for advertising but when we built it we had Venolia cut a custom set of forged pistons @ 9.75 to 1 so we could burn premium pump fuel (and it uses alot of it about 2 mpg) without pinging so it could be driven to the shows and such. [IMG]http://www.****************.com/boardpics/eng1.jpg[/IMG]

10-01-2003, 05:43 PM	#11
miket Registered User Join Date: Jan 2003 Location: Seattle WA Posts: 1,466	What cam/heads? How did you guys do it with no NOS/blower or turbo? and low compression? __________________ FocuzTech Performance Evergreen Protective Coatings Gatorhyde...the best kept secret in spray in bed lining & protection

10-01-2003, 05:47 PM	#12
rickspickuppart Account Suspended Join Date: Jul 2003 Posts: 1,284	give me a few minutes and I will give you a whole write up on it (lots of typing)

10-01-2003, 05:49 PM	#13
miket Registered User Join Date: Jan 2003 Location: Seattle WA Posts: 1,466	Why don't you pm me? Then we won't take up the whole post. __________________ FocuzTech Performance Evergreen Protective Coatings Gatorhyde...the best kept secret in spray in bed lining & protection

10-01-2003, 05:54 PM	#14
rickspickuppart Account Suspended Join Date: Jul 2003 Posts: 1,284	motor Engine: 542 inch Prostock block from chevy programable 1250 cfm TPI w/ 52 psi Injectors 1/4" stroker crank from Calles 9.1-1 comp 4.5000" custom made piston from venolia (I was mistaken on that one earlier) Aluminum D port heads (2.130 Intake 1.88 exhaust) w/ manley SS valves Comp roller cam (.556 lift 280 duration) comp roller rockers Fluid dampner (It's been together for a few years so I am sure I forgot something) Last edited by rickspickuppart; 10-01-2003 at 05:58 PM.

10-01-2003, 05:57 PM	#15
rickspickuppart Account Suspended Join Date: Jul 2003 Posts: 1,284	sorry this is way off topic of the original thread, I didn't see your PM idea till after I hit "submit reply"



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10-01-2003, 05:58 PM	#16
miket Registered User Join Date: Jan 2003 Location: Seattle WA Posts: 1,466	thanks. __________________ FocuzTech Performance Evergreen Protective Coatings Gatorhyde...the best kept secret in spray in bed lining & protection

10-02-2003, 12:08 AM	#17
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	He isn't the only one that was wondering about 900 horsses. Good info. Have you had it down the 1320 yet? If it hooks up it should be pretty fun, but I think you'd be kicked off the track for lack of safety equipment after the first run huh?

10-02-2003, 12:15 AM	#18
rickspickuppart Account Suspended Join Date: Jul 2003 Posts: 1,284	it would get kicked and the tranny wouldn't stand it if it ever "hooked" up, just wait till truck 3 is done (it might take a couple years) w/ a merlin 705 and the drivetrain to back it up and it will be street legal (1400hp plus). We are starting to gather the pieces for the body now. Shawn

10-02-2003, 12:17 AM	#19
miket Registered User Join Date: Jan 2003 Location: Seattle WA Posts: 1,466	Shawn, Well the next time I am down there visiting my in laws I will have to come and check you guys out!!!!!! __________________ FocuzTech Performance Evergreen Protective Coatings Gatorhyde...the best kept secret in spray in bed lining & protection

10-02-2003, 12:19 AM	#20
rickspickuppart Account Suspended Join Date: Jul 2003 Posts: 1,284	definetly do (most of the time people treat it like a car show w/ the customer jobs we got going on)

10-02-2003, 12:22 AM	#21
rickspickuppart Account Suspended Join Date: Jul 2003 Posts: 1,284	maybe when you are here we will go for a ride (it is always fun at 90mph in high gear at 1/3 throttle to start burning the tires)

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