Help with 350/350th new crossmembers? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

LeftEar55 · 03-12-2005, 06:51 PM

OK, I need to know if I need to remove the old straight 6 crossmember and the old 3 speed crossmember? I'm pretty sure I need to remove the tranny one, but what about the engine one? If I remove it, where will the radiator mount back too??? Also, who should I get the new V8 and 350th crossmembers from? Does anyone sale bolt-ins or are they all weld in?

3100 special · 03-12-2005, 11:17 PM

Not sure. You might post this one over on the Engine & Drivetrain section. I'll have these questions later myself. I'm doing all of the bodywork before working the drivetrain.

kaleido · 03-13-2005, 12:24 AM

My father-in-law took the 216 out of his 1950 3100 and installed a chevy small block. He used the cross member from chevy duty without difficulty. I do not know if it was a bolt on or a weld on but I have found the folks at Chevy duty very open to questions. You can see theirs at http://www.chevyduty.com/frame-store.html

(1947-59) V-8 Crossmember
Tubular type mount adapts side mount type GM small block motors to early truck frames. Compare the competition's bent water pipe made into a motor mount with our street rod quality mount and we know which one you'll choose.
Part # 79-405
Price Qty
$54.95
Their phone number is 1 (800) 741-1678

LeftEar55 · 03-13-2005, 09:41 AM

Thanks, I posted over in the engine forum, but

answers yet!!! They're all whining about gas prices.

solidaxel · 03-13-2005, 11:58 AM

Save yourself time and overall $$$$ buy a new frame and suspension from RB Obsolete

LeftEar55 · 03-13-2005, 12:07 PM

Why would I do that? I don't need a new frame. I don't want coils in the front. I want to keep it mostly original, including the rough ride. What does buying a new frame have to do with my crossmember question anyway??? Also, looks like you are well off, by the list of cars your sig has. I, on the other hand, have very little money and can't just go out and buy useless stuff left and right. I have to save up for a part and hopefully can still pay bills afterwards...

solidaxel · 03-13-2005, 01:08 PM

Thank You, my wife has a newer car but I have had some of mine for 40years and am just getting around to finishing the last one, the 55.
If I had to do it over I would have started with a new frame instead of dollering one piece at a time as the funds came in. Yes I wanted those coil springs and better bracking and of corse more POWER.
Good Luck with your project

truog52 · 03-15-2005, 01:52 AM

LeftEar55 If you decide to go with the cross members you are going to have the same problem I’m having. You don’t need to cut out the front cross member but you do need to cut out the trans one. But your block will sit real close to the steering gear box. About 1¼ inch. No room for exhaust. I’m thinking of using u-joint on the steering column to make it fit. But I have seen some trucks with the same setup with no u-joints, I just cant remember how they went about doing it.

TooMany2count · 03-15-2005, 10:19 AM

Quote:

Originally Posted by truog52

But I have seen some trucks with the same setup with no u-joints, I just cant remember how they went about doing it.

they offset the motor to the passager side a couple of inches....

Quote:

Save yourself time and overall $$$$ buy a new frame and suspension from RB Obsolete

WHYYYYYYYY?????? there's is NOTHING wrong w/the stock frame or suspension as long as it's in good shape(which most are), if a straight axel has been good enuff since the begining of time what wrong w/them now, remember they still use them under trucks

.. as for brakes there are several companies that make disc brake kits that fit just about any type of car or truck out there, &&&&& they will stop anything they are put on, EVEN w/a BIG BLOCK w/a Blower & NOS on it. you just need the correct kit.

hey Jason BUILD it the way you want it, NOT they way others should think u should build it. i personally did a frame swap, WHY u may ask. well when u get half of a 1ton suspension & can't find or buy parts for it along w/the frame weighing 1000 lbs more then a 1/2ton frame, you do what you have to do. it was easier &&&& cheaper for me to do the swap then it was going to be to find & rebuild what i had......
like i said Jason BUILD it the way you want it done & forget about what others may say to you. cause they ain't paying the bills or driving it &&&& if ur happy thats all that matters. .....joe

03-12-2005, 06:51 PM	#1
LeftEar55 Registered User Join Date: Feb 2005 Location: Huntsville, Alabama Posts: 107	Help with 350/350th new crossmembers? OK, I need to know if I need to remove the old straight 6 crossmember and the old 3 speed crossmember? I'm pretty sure I need to remove the tranny one, but what about the engine one? If I remove it, where will the radiator mount back too??? Also, who should I get the new V8 and 350th crossmembers from? Does anyone sale bolt-ins or are they all weld in?

03-12-2005, 11:17 PM	#2
3100 special Street Rod Dreamin' Join Date: Feb 2004 Location: Work:Batam, Indonesia/ Home:League City, Texas Posts: 1,243	Not sure. You might post this one over on the Engine & Drivetrain section. I'll have these questions later myself. I'm doing all of the bodywork before working the drivetrain. __________________ 1954 Chevy 3100 Panel Truck 2004 GMC Yukon 2007 GMC Sierra 4X4 "I am for doing good to the poor, but I differ in opinion of the means. I think the best way of doing good to the poor, is not making them easy in poverty, but leading or driving them out of it." Benjamin Franklin, On the Price of Corn and Management of the Poor, November 1776

03-13-2005, 12:24 AM	#3
kaleido Registered User Join Date: Feb 2005 Location: Sping, Texas (Houston) Posts: 17	My father-in-law took the 216 out of his 1950 3100 and installed a chevy small block. He used the cross member from chevy duty without difficulty. I do not know if it was a bolt on or a weld on but I have found the folks at Chevy duty very open to questions. You can see theirs at http://www.chevyduty.com/frame-store.html (1947-59) V-8 Crossmember Tubular type mount adapts side mount type GM small block motors to early truck frames. Compare the competition's bent water pipe made into a motor mount with our street rod quality mount and we know which one you'll choose. Part # 79-405 Price Qty $54.95 Their phone number is 1 (800) 741-1678 __________________ 1950 Chevy stock 3600

03-13-2005, 11:58 AM	#5
solidaxel Registered User Join Date: Dec 2002 Location: Cactus Patch So. Az Posts: 4,749	Save yourself time and overall $$$$ buy a new frame and suspension from RB Obsolete __________________ 53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42

03-13-2005, 12:07 PM	#6
LeftEar55 Registered User Join Date: Feb 2005 Location: Huntsville, Alabama Posts: 107	Why would I do that? I don't need a new frame. I don't want coils in the front. I want to keep it mostly original, including the rough ride. What does buying a new frame have to do with my crossmember question anyway??? Also, looks like you are well off, by the list of cars your sig has. I, on the other hand, have very little money and can't just go out and buy useless stuff left and right. I have to save up for a part and hopefully can still pay bills afterwards... Last edited by LeftEar55; 03-13-2005 at 12:11 PM.

03-13-2005, 09:41 AM	#4
LeftEar55 Registered User Join Date: Feb 2005 Location: Huntsville, Alabama Posts: 107	Thanks, I posted over in the engine forum, but answers yet!!! They're all whining about gas prices.

03-13-2005, 01:08 PM	#7
solidaxel Registered User Join Date: Dec 2002 Location: Cactus Patch So. Az Posts: 4,749	Thank You, my wife has a newer car but I have had some of mine for 40years and am just getting around to finishing the last one, the 55. If I had to do it over I would have started with a new frame instead of dollering one piece at a time as the funds came in. Yes I wanted those coil springs and better bracking and of corse more POWER. Good Luck with your project __________________ 53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42

03-15-2005, 01:52 AM	#8
truog52 Registered User Join Date: Jan 2005 Posts: 6	LeftEar55 If you decide to go with the cross members you are going to have the same problem I’m having. You don’t need to cut out the front cross member but you do need to cut out the trans one. But your block will sit real close to the steering gear box. About 1¼ inch. No room for exhaust. I’m thinking of using u-joint on the steering column to make it fit. But I have seen some trucks with the same setup with no u-joints, I just cant remember how they went about doing it.



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