Chain for Engine Torque - The 1947 - Present Chevrolet & GMC Truck Message Board Network

gene_ensor · 09-07-2009, 08:19 AM

I am building a street/strip truck with a 496 mark IV block, AFR heads, and plan to squirt N2O. Before I rip the motor mounts out or bust up the block, can someone provide pictures of the most ideal way to chain this BBC?

Many thanks.

Gene

KQQL IT · 09-07-2009, 04:48 PM

I dont think a chain will be needed IMO... Urethane mounts will be enough.

Marv D · 09-07-2009, 05:19 PM

Or with (I'd estimate 700-900HP if your building that as a race motor) you should probably use min and front motor plate
Alston makes some decent steel mid platesfor around $50 and a heavy 1/4" 6061 aluminum front motor plate for $130. Probably don't need both but if your transbrake launching that much torque,, I'd at least add a mid plate.
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fast_dev · 09-07-2009, 10:33 PM

i did it, went from the driver side cylinder head accessory hole to the frame. i put a bolt through the frame with a nut on it, then the chain and another nut.

*2tons of fun* · 09-07-2009, 11:25 PM

switch to the 73+ mounts, much much stronger.

Marv D · 09-08-2009, 10:49 AM

Quote:

Originally Posted by fast_dev

i did it, went from the driver side cylinder head accessory hole to the frame. i put a bolt through the frame with a nut on it, then the chain and another nut.

Make sure you use it as a 'safety net' and no tension on it. I've heard horror stories of a taught chain causing the head to work on the deck and cause both intake and head gasket failures.

**americanmusc1e** · 09-08-2009, 02:48 PM

Quote:

Originally Posted by 2tons of fun

switch to the 73+ mounts, much much stronger.

sorry, don't mean to hijack this thread, but

how hard is that????? can it be done on an SBC????

*2tons of fun* · 09-09-2009, 12:26 AM

yes.

yank the towers and bs mounts off of yours.

go to the junk yard and get the towers, mounts and cups from a 73+, lay them on the frame and drill the new holes.

if you dont want to drill all new holes you can match them up to the existing ones for the most part, you will need to fudge one nomatter what though. the catch is that it will put your motor and tranny back 1" so you will need to redrill the cross member or just the trany mount.

look up trkklr77, he did a pic/write up on it.

Rodms · 09-09-2009, 12:58 AM

I w.I would at least buy #8 grade bolts and bolt to the block not the heads,I will make some pics in a few days and post for you.

gene_ensor · 09-09-2009, 03:11 AM

Here is some background info on big block stock engine mounts that will work for the 67-72 pickups. Looks like the faq thread has lost its images

http://67-72chevytrucks.com/vboard/s...d.php?t=275552

http://67-72chevytrucks.com/vboard/s...d.php?t=128765

gene_ensor · 09-09-2009, 03:21 AM

Ok.... with the plate between the engine and tranny, what special parts are needed due to the plate thickness? A longer tranny shaft, thicker flywheel, or a couple washers and a slinky?

Alex1 · 09-09-2009, 08:56 AM

Quote:

Originally Posted by gene_ensor

Ok.... with the plate between the engine and tranny, what special parts are needed due to the plate thickness? A longer tranny shaft, thicker flywheel, or a couple washers and a slinky?

I'm pretty sure you will be fine with just a front plate.

gene_ensor · 09-25-2009, 08:37 AM

Can someone post pictures of the front plate install? Are there issues with an install in a 69 2wd, full pulley/accessories kit, stock frame, etc? Thanks!

09-07-2009, 08:19 AM	#1
gene_ensor Registered User Join Date: Oct 2005 Location: Rapid City South Dakota Posts: 39	Chain for Engine Torque I am building a street/strip truck with a 496 mark IV block, AFR heads, and plan to squirt N2O. Before I rip the motor mounts out or bust up the block, can someone provide pictures of the most ideal way to chain this BBC? Many thanks. Gene

09-07-2009, 04:48 PM	#2
KQQL IT At the body shop. Join Date: Aug 2009 Location: Land of fruits and nuts. Posts: 5,254	Re: Chain for Engine Torque I dont think a chain will be needed IMO... Urethane mounts will be enough. __________________ " That didnt make it any newer " " Dont antique the equipment "

09-07-2009, 05:19 PM	#3
Marv D Registered Truck Offender Join Date: May 2008 Location: hells training ground (aka Ariz) Posts: 3,118	Re: Chain for Engine Torque Or with (I'd estimate 700-900HP if your building that as a race motor) you should probably use min and front motor plate Alston makes some decent steel mid platesfor around $50 and a heavy 1/4" 6061 aluminum front motor plate for $130. Probably don't need both but if your transbrake launching that much torque,, I'd at least add a mid plate. [img] __________________ Still playin with trucks, even at my age! When you're dead, it's only a problem for the people around you, because you don't know you're dead. .....It's kinda the same when your STUPID. I just did my taxes and reviewed my SS statement. Thanks to the current administration it looks like I will only have to work till noon on the day of my funeral.

09-07-2009, 10:33 PM	#4
fast_dev Registered User Join Date: Dec 2000 Location: Ringtown,PA Posts: 555	Re: Chain for Engine Torque i did it, went from the driver side cylinder head accessory hole to the frame. i put a bolt through the frame with a nut on it, then the chain and another nut. __________________ 68 chevy 406 small block, budget drag racer, new best e.t 11.91 @112 67 nova numbers matching 327 4 speed 13.6 @ 102mph 70 longhorn c-30 402/4 speed 70 c-10 swb 402, muncie 4 speed 94 s-10 350/th350 3:73 posi 71 c-20 402/th400 towrig for racetruck. 72 4wd lifted on 35's 72 350/3 speed winter beater

09-07-2009, 11:25 PM	#5
2tons of fun Account Suspended Join Date: Jan 2009 Location: galt ca, Posts: 749	Re: Chain for Engine Torque switch to the 73+ mounts, much much stronger.

09-09-2009, 12:26 AM	#8
2tons of fun Account Suspended Join Date: Jan 2009 Location: galt ca, Posts: 749	Re: Chain for Engine Torque yes. yank the towers and bs mounts off of yours. go to the junk yard and get the towers, mounts and cups from a 73+, lay them on the frame and drill the new holes. if you dont want to drill all new holes you can match them up to the existing ones for the most part, you will need to fudge one nomatter what though. the catch is that it will put your motor and tranny back 1" so you will need to redrill the cross member or just the trany mount. look up trkklr77, he did a pic/write up on it. Last edited by 2tons of fun; 09-09-2009 at 12:27 AM.

09-09-2009, 12:58 AM	#9
Rodms Registered User Join Date: Jul 2008 Location: Olive Branch,Mississippi Posts: 347	Re: Chain for Engine Torque I w.I would at least buy #8 grade bolts and bolt to the block not the heads,I will make some pics in a few days and post for you. __________________ Built chevy tuff!

09-09-2009, 03:11 AM	#10
gene_ensor Registered User Join Date: Oct 2005 Location: Rapid City South Dakota Posts: 39	Re: Chain for Engine Torque Here is some background info on big block stock engine mounts that will work for the 67-72 pickups. Looks like the faq thread has lost its images http://67-72chevytrucks.com/vboard/s...d.php?t=275552 http://67-72chevytrucks.com/vboard/s...d.php?t=128765 Attached Images Last edited by gene_ensor; 09-09-2009 at 03:13 AM.

09-09-2009, 03:21 AM	#11
gene_ensor Registered User Join Date: Oct 2005 Location: Rapid City South Dakota Posts: 39	Re: Chain for Engine Torque Ok.... with the plate between the engine and tranny, what special parts are needed due to the plate thickness? A longer tranny shaft, thicker flywheel, or a couple washers and a slinky?

09-25-2009, 08:37 AM	#13
gene_ensor Registered User Join Date: Oct 2005 Location: Rapid City South Dakota Posts: 39	Re: Chain for Engine Torque Can someone post pictures of the front plate install? Are there issues with an install in a 69 2wd, full pulley/accessories kit, stock frame, etc? Thanks!

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