Stupid Engine mounts., - The 1947 - Present Chevrolet & GMC Truck Message Board Network

orange72350 · 10-30-2003, 01:38 AM

I just dropped my 350/350 combo back into my 72 gmc. no matter what i try these stupid engine mounts will not line up on the towers. the tranny is perfectly mounted, and the engine is close, but the left side needs to come forward 1/2 inch, and the right needs to go back 1/2 inch. what is the easiest way to line this up? im almost to the point of unbolting the bellhousing almost all the way and moving the engine till it lines up, then retourquing everything. any suggestions are greatly appreciated.
thanx
dale

Alexis · 10-30-2003, 02:06 AM

losen up the towers. and unbolt the transmission. Once you got the thread running on the engine mounts, tighten it up. Align the transmission and get the bolts in it and then tighten up the rest. Hope it helps

72shadetree · 10-30-2003, 02:18 AM

what he said

Blue Beard · 10-30-2003, 09:44 AM

Use an alignment bar to help.......

Huck · 10-30-2003, 10:03 AM

Have seen this happen, make sure you have the engine SBC mounts on the correct sides---left/right as this can really screw things up.

**COBALT** · 10-30-2003, 10:55 AM

I unbolted the towers completely from the frame, bolted them to the mounts on the engine, and use some bar stock as guide studs to force the towers back into place. Then I installed the remaining two bolts on each tower, and knocked the guide studs out, and then put the remaining bolts in.

That was after farting around for 2 hours trying to loosen everything on my truck to get the damn holes to line up...

orange72350 · 10-30-2003, 03:58 PM

woo hoo. sounds like i got a fun night planned. (sarcasm) These mounts can really be a pig to line up. How can u tell left from right? they both came in the same style box, with no marking, so i just figured they were the same. thanx
dale

fast67chevy2002 · 10-30-2003, 05:13 PM

I would like to know how to tell also, thanks.

crazy longhorn · 10-30-2003, 08:08 PM

The mounts are the same part # for both sides.....I think Huck was refering to the frame stands. those mounts are a PITA to line up......the last 3 trucks I have done have had the center holr in the frame stand drilled to 5/8 ", to give a little room to work with. They bolt in much easier, & the extra material removed doesnt hurt a thing(that 7/16 bolt has a thick flatwasher on it). Good luck,crazyL

junkyardjohn · 10-30-2003, 11:43 PM

I JUST PUT A MOTOR IN MY 69 1 TON TOWTRUCK. WHAT A PAIN GETTING THE TOWERS TO BOLT UP TO THE MOUNTS. AFTER SCREWING WITH TRYING TO GET THE BOLTS STARTED FOR ABOUT 4 HOURS, I FINALLY REMOVED 1 OF THE MOTOR MOUNTS & FOUND THAT THE THEADED HOLE WAS ABOUT 1/4" HIGHER THAT THE OEM ONES. THEY WERE ANCHOR MOUNTS THAT WERE MADE IN INDIA. (WHAT DO A BUNCH OF INDIAN GUYS KNOW ABOUT 67-72 CHEVY TRUCK MOTOR MOUNTS ANYWAY??) I BET THERES NOT 3 67-72 TRUCKS IN ALL OF INDIA. I TOOK THOSE BACK, & WENT ON A QUEST OF ALL THE AUTO PARTS STORES IN TOWN TO TRY & FIND SOME MOUNTS THAT WERE CLOSER TO THE ORIGINAL ONES. ANYWAYS I SETTLED FOR SOME THAT WERE CLOSER TO MY OEM ONES , BUT STILL HAD TO GRIND ON THEM,LOOSEN UP MY TRANNY,LOOSEN MY FRAME TOWERS, DRAW THE MOTOR DOWN DEEPER IN THE FRAME WITH A BIG C CLAMP & PRY ON IT WITH A 3 FOOT PRY BAR. GOOD LUCK JOHN

zork · 10-31-2003, 01:02 AM

I just put new mounts in my k20 last week and I had to lossen the trans mount and engine cross section . I also had to jack the tans to one side. That was after cutting a little piece out of the india motor mount to get the lower bolt in the block. It took me 3 hours to get everything lined up.
It will be worth the effort when you are done! Good luck!
Zork.

Castiron9 · 10-31-2003, 02:23 AM

We just put in our rebuilt big-block in the Longhorn......Patience..PatiencePatience ..and a big crowbar

frost89434 · 10-31-2003, 11:48 AM

They can be a pain in the arse!!! Like everyone else said. Pateince.

10-30-2003, 01:38 AM	#1
orange72350 Registered User Join Date: Jan 2003 Location: Cold, Snowy High Level, Alberta Canada Eh Posts: 394	Stupid Engine mounts., I just dropped my 350/350 combo back into my 72 gmc. no matter what i try these stupid engine mounts will not line up on the towers. the tranny is perfectly mounted, and the engine is close, but the left side needs to come forward 1/2 inch, and the right needs to go back 1/2 inch. what is the easiest way to line this up? im almost to the point of unbolting the bellhousing almost all the way and moving the engine till it lines up, then retourquing everything. any suggestions are greatly appreciated. thanx dale __________________ 2003 yamaha raptor. Stock, but it still hauls!!!! 2000 skiddo mxz 700. Camoplast 1.5 inch track, jaws twin pipes, b+b can, custom built and weighted clutch, wiseco piston, high comp heads. its very fast. wow. 72 c-10 longbox. Bright Orange. Brand new 350, rv cam, performer intake, qjet, headers, 2 1/2 inch exhaust into hooker areo chamber mufflers. Body work coming soon. "dont let yer mind wander, its to little to go places by itself." "Forget the herse, cause i'll never die"-ACDC Back In Black "If It's To Loud, Yer Just Too Old" "I Love Anything Fast Enough To Do Something Stupid In" "Instant idiot, just add beer!!""

10-30-2003, 02:06 AM	#2
Alexis Member since 2000 Join Date: Dec 2000 Location: Mountain View Ca / Mexico Posts: 7,874	losen up the towers. and unbolt the transmission. Once you got the thread running on the engine mounts, tighten it up. Align the transmission and get the bolts in it and then tighten up the rest. Hope it helps Last edited by Alexis; 10-30-2003 at 02:24 AM.

10-30-2003, 02:18 AM	#3
72shadetree KEEP ON TRUCKING Join Date: Sep 2000 Location: martinsville va Posts: 2,563	what he said __________________ 72 cheyenne 2wd lwb 71 k20 sons bassett va

10-30-2003, 09:44 AM	#4
Blue Beard Registered User Join Date: Jan 2003 Location: Washington State Posts: 8,831	Use an alignment bar to help....... __________________ 1970 Chev CST 2003 Harley Fatboy 1975 Chevrolet Step Van 1956 Chev Bel Air 1977 Blazer 2WD For Sale $3000.00 1978 Blazer 2WD For Sale $7000.00 1978 Silverado 2005 Monte Carlo

10-30-2003, 10:55 AM	#6
COBALT Senior Member Join Date: Sep 2001 Location: Seattle, WA, USA Posts: 5,817	I unbolted the towers completely from the frame, bolted them to the mounts on the engine, and use some bar stock as guide studs to force the towers back into place. Then I installed the remaining two bolts on each tower, and knocked the guide studs out, and then put the remaining bolts in. That was after farting around for 2 hours trying to loosen everything on my truck to get the damn holes to line up... __________________ '69 3/4 ton C20 2wd-350ci/TH400 '69 3/4 ton Custom 20 2wd-350ci/4sp Manual '99 2wd 5.7 Chevy Tahoe Seattle, WA.

10-30-2003, 10:03 AM	#5
Huck Senior Member Join Date: Jun 2001 Location: Shelbyville, KY Posts: 3,261	Have seen this happen, make sure you have the engine SBC mounts on the correct sides---left/right as this can really screw things up.

10-30-2003, 03:58 PM	#7
orange72350 Registered User Join Date: Jan 2003 Location: Cold, Snowy High Level, Alberta Canada Eh Posts: 394	woo hoo. sounds like i got a fun night planned. (sarcasm) These mounts can really be a pig to line up. How can u tell left from right? they both came in the same style box, with no marking, so i just figured they were the same. thanx dale __________________ 2003 yamaha raptor. Stock, but it still hauls!!!! 2000 skiddo mxz 700. Camoplast 1.5 inch track, jaws twin pipes, b+b can, custom built and weighted clutch, wiseco piston, high comp heads. its very fast. wow. 72 c-10 longbox. Bright Orange. Brand new 350, rv cam, performer intake, qjet, headers, 2 1/2 inch exhaust into hooker areo chamber mufflers. Body work coming soon. "dont let yer mind wander, its to little to go places by itself." "Forget the herse, cause i'll never die"-ACDC Back In Black "If It's To Loud, Yer Just Too Old" "I Love Anything Fast Enough To Do Something Stupid In" "Instant idiot, just add beer!!""

10-30-2003, 05:13 PM	#8
fast67chevy2002 Dad's little helper Join Date: Apr 2003 Location: Helena, MT Posts: 194	I would like to know how to tell also, thanks. __________________ too many projects: 61 biscane 67 swb(shaved) 73 Fiat spider 124 Sport 84 Pontiac Grand Prix 86 olds cut. sup.

10-30-2003, 08:08 PM	#9
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,402	The mounts are the same part # for both sides.....I think Huck was refering to the frame stands. those mounts are a PITA to line up......the last 3 trucks I have done have had the center holr in the frame stand drilled to 5/8 ", to give a little room to work with. They bolt in much easier, & the extra material removed doesnt hurt a thing(that 7/16 bolt has a thick flatwasher on it). Good luck,crazyL __________________ 69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....

10-30-2003, 11:43 PM	#10
junkyardjohn Registered User Join Date: Aug 2001 Location: SOMERSET KY. Posts: 6,425	I JUST PUT A MOTOR IN MY 69 1 TON TOWTRUCK. WHAT A PAIN GETTING THE TOWERS TO BOLT UP TO THE MOUNTS. AFTER SCREWING WITH TRYING TO GET THE BOLTS STARTED FOR ABOUT 4 HOURS, I FINALLY REMOVED 1 OF THE MOTOR MOUNTS & FOUND THAT THE THEADED HOLE WAS ABOUT 1/4" HIGHER THAT THE OEM ONES. THEY WERE ANCHOR MOUNTS THAT WERE MADE IN INDIA. (WHAT DO A BUNCH OF INDIAN GUYS KNOW ABOUT 67-72 CHEVY TRUCK MOTOR MOUNTS ANYWAY??) I BET THERES NOT 3 67-72 TRUCKS IN ALL OF INDIA. I TOOK THOSE BACK, & WENT ON A QUEST OF ALL THE AUTO PARTS STORES IN TOWN TO TRY & FIND SOME MOUNTS THAT WERE CLOSER TO THE ORIGINAL ONES. ANYWAYS I SETTLED FOR SOME THAT WERE CLOSER TO MY OEM ONES , BUT STILL HAD TO GRIND ON THEM,LOOSEN UP MY TRANNY,LOOSEN MY FRAME TOWERS, DRAW THE MOTOR DOWN DEEPER IN THE FRAME WITH A BIG C CLAMP & PRY ON IT WITH A 3 FOOT PRY BAR. GOOD LUCK JOHN __________________ junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE. THERES ROOM FOR ALL OF GODS CREATURES RIGHT NEXT TO MY MASHED POTATOES// LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST

10-31-2003, 01:02 AM	#11
zork Registered User Join Date: Jul 2003 Location: Connellsville , Pa Posts: 40	I just put new mounts in my k20 last week and I had to lossen the trans mount and engine cross section . I also had to jack the tans to one side. That was after cutting a little piece out of the india motor mount to get the lower bolt in the block. It took me 3 hours to get everything lined up. It will be worth the effort when you are done! Good luck! Zork.

10-31-2003, 02:23 AM	#12
Castiron9 72 LONGHORN OWNER Join Date: Sep 2002 Location: Seattle Wash. Posts: 963	We just put in our rebuilt big-block in the Longhorn......Patience..PatiencePatience ..and a big crowbar __________________ 72-SUPER CHEYENNE/20 LONGHORN 70-C/30 DUALLY

10-31-2003, 11:48 AM	#13
frost89434 Registered User Join Date: Nov 2001 Location: sparks, NV Posts: 1,141	They can be a pain in the arse!!! Like everyone else said. Pateince. __________________ 68 short fleet with 71 front clip 2wd jaguar blue 99 chevy ext cab shrtbed z71 loaded 99 chevy swb fleetside(daily driver) Sparks, Nevada

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