454BB valve cover hitting firewall!

[petey-pablo]

Any Input? I just bought a 1972 C-10 Cheyenne short bed with a 454bb TH400 it originaly had a inline 6 shifter on the tree and I was looking at the Motor it is sitting on the on V6 motor mounts wow I didn't know this could be done. Truck runs great but I tore it apart for paint But I want to change out the motor mounts . I was looking at the Driver side valve cover and it is hitting the fire wall Will this be corrected when I change out the motor mounts or do I have to pound my firewall in to make it fit right. Any one ever come accross this problem please much help is needed. I would post pictures but I do not know how...

[too much stuff]

Not sure if i got this correct, but sitting on V-6 mounts? Or sitting in the 6 cyl position? There should be another set of holes in the frame to move everything forward a couple of inches. Sometimes the vette low valve covers with the notch at the rear gives you a little more room.

[retselgerg]

yes by moving it from the I6 mount location to the V8 mount location you will gain a few inches, my farthers 72 was done the same way by the PO, its pretty straight forward to do....by the way welcome to the board you submit pictures by clicking on manage attachments..then just browse and find the pics u want to upload

[chevy72blu]

I would really like to see a few pics of how they adapted the I6 stands, especially in a 72.

[hvychve]

Originally Posted by chevy72blu

I would really like to see a few pics of how they adapted the I6 stands, especially in a 72.

yeah , me too.
If you want it correct, why not just purchase some big block perches and do it up correct, that or find you a big sledge and smack the firewall a few times.

[petey-pablo]

Thanks for your help guys ok here goes the pictures ! I am not a good photo taker so this is the best I can do but im warning you it's a big mess now "lol" well I tried to up load photos but this is what I kept getting over and over -----> you do not have permission to access this page. This could be due to one of several reasons:

Your user account may not have sufficient privileges to access this page. Are you trying to edit someone else's post, access administrative features or some other privileged system?
If you are trying to post, the administrator may have disabled your account, or it may be awaiting activation.

[petey-pablo]

Ok this is the only way I could do this please view my Album. http://s263.photobucket.com/albums/i...Picture006.jpg

[too much stuff]

I know those taller valve covers aren't helping with clearance. My opinion is move everything forward to the V-8 set of holes. You may have to have a driveshaft made, or lengthen the one you have. It looks like this would be the time to do it. I think you will be happier in the long run. Other option is massage the firewall till everything clears. How tight is the dist.? Eric

[petey-pablo]

Well I never did think about the dist! but heres a pic. I was told I could go with 73 mounts would this be a good idea or should I jus try for the 72's

[Willys47]

73 mouts will not be a bolt in deal, I tryed and it woudnt work for me but the 72 mounts would

[petey-pablo]

I was wondering do you guys know who carry's Big Block Motor Mount Brackets / Perches? No one seems to have them I am haveing trouble finding them please anyone...

[SOON2BLAZE]

Performance online: tubular towers with new rubber mounts 129. ish or upgrade to poly mounts for a little more. Easier than hunting down 72 only mounts for more $$$$.

[Willys47]

ECE shows them in there catalog part no 11-3953 and 11-3954 75.00 each

[70inline6]

I dunno... it looks like the engine mounts are as tightened down as far back (bolts to front of mounts) as they can go. Maybe loosen both mounts and the tranny mounts and shift the whole assy forward. It looks like you will gain a couple inches that way. Any more and your cooling fans may start interfeing with your belt system.

[chevy72blu]

I placed my BBC between the two holes for weight transfer and clearence up front.

I first adapted a 73+ SBC tower, and they work great on 67-71 trucks, but on a 72 you will not be happy. The motor sits upward at a goofy angle, too high in the center, and the valve covers hit the PB booster.





I've since found the correct 72 only towers from a board member. They were pricey, but I searched ebay and CL for litteraly 6 months for them.

The Performance Online tubular ones look pretty dinky to me. Being as I am building a street/strip monster, I didnt trust them. Also, I couldnt confirm if they would fit right in a 72, though they claim it. DUe to the differences in the frame/x member, I dont see how one that fits a 67-71 will work the exact same way.

Thats awsome and a DAMN good price if ECE carries them. Someone needs to repop these damn things.

Good luck and PM me if you have any questions

[petey-pablo]

Well I got all excited for a minute there but this is what I found but they are for the 67-71 big block not the 72

Engine Frame Mounts
'67-'71 Big Block (L/H) 1 $109 $109
Engine Frame Mounts
'67-'71 Big Block (R/H) 1 $109 $109
SubTotal: $218.00

[petey-pablo]

Well well well Looks like I had some luck after all and I didn't even have to go far Thanks to Paul @ GMCPauls Who replied to my email cry for help and wrote. " the last we knew GM still had them
GM Part# 334601
1972 Big Block L or R ENGINE FRAME BRACKET
Contact your local GM dealer with the part # and
have them double check it and they should be able to
order them in for you. Should run around $39.00ea"

[petey-pablo]

Ok Guys heres the Low down I jus got off the phone with a friend of mine he told me a friend of his works at Courtesy Chevrolet in the parts department, So I called he helped me out and I scored hell ya bad thing is they have to be orderd but I can wait 2 days alot less then if I would have orderd online! Thanks to all for your help I think this case is closed for now! THANKS TO COURTESY CHEVROLET IN San Jose 3640 Stevens Creek Blvd., ! & Not to forget Paul @GMCPauls for the info, I would have never thought of contacting them!!
The good part is I am not even going BROKE at an unbelievable Price at Just $38.94 EACH !

[Longhorn Man]

That's probably just the motor mounts... not the brackets that bolt to the frame.

[petey-pablo]

Well I did ask twice I guess I will have to wait and see what they have for me when the parts do come in I will keep you posted!

[chevy72blu]

Wow! If you got what you wanted, that is an amazing price

[69trk]

Originally Posted by chevy72blu

I placed my BBC between the two holes for weight transfer and clearence up front.

I first adapted a 73+ SBC tower, and they work great on 67-71 trucks, but on a 72 you will not be happy. The motor sits upward at a goofy angle, too high in the center, and the valve covers hit the PB booster.





I've since found the correct 72 only towers from a board member. They were pricey, but I searched ebay and CL for litteraly 6 months for them.

The Performance Online tubular ones look pretty dinky to me. Being as I am building a street/strip monster, I didnt trust them. Also, I couldnt confirm if they would fit right in a 72, though they claim it. DUe to the differences in the frame/x member, I dont see how one that fits a 67-71 will work the exact same way.

Thats awsome and a DAMN good price if ECE carries them. Someone needs to repop these damn things.

Good luck and PM me if you have any questions

I have the performance on line mounts for my big block and like them alot. My truck is set up for street and strip and i was going to go with solid mounts but ended up with the polyurathane instead. I also went with a chain to be safe. The only problem i have is my headers hit the lower a-frame bolt. I think that later i might change to solid mounts that are longer that will raise my engine about an inch or so. Other than that i like them alot. Truck has ran a best of 11.37 and getting faster.

[chevy72blu]

Originally Posted by 69trk

I have the performance on line mounts for my big block and like them alot. My truck is set up for street and strip and i was going to go with solid mounts but ended up with the polyurathane instead. I also went with a chain to be safe. The only problem i have is my headers hit the lower a-frame bolt. I think that later i might change to solid mounts that are longer that will raise my engine about an inch or so. Other than that i like them alot. Truck has ran a best of 11.37 and getting faster.

My main issue was that I couldnt confirm whether or not they would bit a 72 frame, but im glad to hear that they are strong. I probably would have put a nice weld where the female tube connected to the bent tube anyway- it just seemed dinky from the pictures of them.

Congrats on that time, btw!

[prostreet1967]

performance online has tubular mounts for good price they went in pretty easy i used the front holes and have alot of room in back can pull an hei dist with no problem. bad thing is no room up front so like someone above said make some holes in between which would be perfect. i cant even use electric fan because the water pump hits the fan. the only reason i left it like that is because i was to lazy to drill frame for trans crossmember

[prostreet1967]

heres some pics of my engine bay.

yeah i know the boosters gotta go, its got about 1/2 between valve cover and booster. gotta order a manual brake pushrod or smaller booster