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Old 05-31-2006, 08:36 PM   #1
Flat 67
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Pics of Big Block in I-6 location wanted

I know a lot of discussion has gone on about BB motor mounts, but I would like to see how close to the firewall a BB would be. I know a SB almost hits the firewall but will a BB even fit in the I-6 location. I like the rearward look and I am willing to cut/modify the firewall if necessary. Pics would sure be appreciated. The BB is going in a 67 C-30.................Thanks, Flat 67

Last edited by Flat 67; 06-01-2006 at 01:46 AM.
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Old 06-01-2006, 01:42 PM   #2
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Re: Pics of Big Block in L-6 location wanted

I think Yukon Jack modified his firewall for a bigblock 4x4 in the rear mount location. anyhow to the top for ya neighbor

Last edited by Olden Days; 06-01-2006 at 01:55 PM.
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Old 06-01-2006, 08:02 PM   #3
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Re: Pics of Big Block in L-6 location wanted

it would take a big hammer
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Old 06-01-2006, 08:50 PM   #4
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Re: Pics of Big Block in L-6 location wanted

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I think Yukon Jack modified his firewall for a bigblock 4x4 in the rear mount location. anyhow to the top for ya neighbor
Hey Olden, Thanks for the ttt.......Flat 67

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it would take a big hammer
GMC71k20, thanks for the suggestion ,but that will be my last resort........Flat 67
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Old 06-01-2006, 09:15 PM   #5
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Re: Pics of Big Block in L-6 location wanted

you will get alot of smart ass commnets, I got crucified on here for using SB frame stands swapped side to side to kick my BB back.
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Old 06-01-2006, 09:40 PM   #6
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Re: Pics of Big Block in L-6 location wanted

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you will get alot of smart ass commnets, I got crucified on here for using SB frame stands swapped side to side to kick my BB back.
farmtruckIII, were you successful in your rearward BB installation?..........Flat 67
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Old 06-01-2006, 09:40 PM   #7
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Re: Pics of Big Block in L-6 location wanted

if your really serious about doing this in a 2wd then look into the corvette valve covers with the indent for the mast cylinder. i think youll save yourself some headaches by moving it forward though. since mine is a 4x4 mine will be way far back but im going to help it by using a small body lift and a little hammering.
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Old 06-01-2006, 11:09 PM   #8
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Re: Pics of Big Block in L-6 location wanted

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Originally Posted by Flat 67
farmtruckIII, were you successful in your rearward BB installation?..........Flat 67
After alot of cursing I was lol. It was a pain to get it square but it is there and running.









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Old 06-01-2006, 11:11 PM   #9
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Re: Pics of Big Block in L-6 location wanted

It also sits up fairly high that way, there is a good 4-5" between the c-member and the oil pan, kinda gives it an old school look.





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Old 06-02-2006, 02:49 PM   #10
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Re: Pics of Big Block in L-6 location wanted

Farmtruck, that appears to be the same way that they put the 454 in my K-20..............Wasn't too bad of a job IMO, other than they hacked a hole for the header pipe in the driverside tower, if they'd have added some round tubing to the back side it would have been a slick setup.

Don't know about yours, but mine was rubbing on the firewall with the big distributor they had on it.....................

Can't really tell you much more, I pulled the BBC and all associated parts from that truck.
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Old 06-02-2006, 06:06 PM   #11
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Re: Pics of Big Block in L-6 location wanted

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Originally Posted by TP from Cntl PA
Farmtruck, that appears to be the same way that they put the 454 in my K-20..............Wasn't too bad of a job IMO, other than they hacked a hole for the header pipe in the driverside tower, if they'd have added some round tubing to the back side it would have been a slick setup.

Don't know about yours, but mine was rubbing on the firewall with the big distributor they had on it.....................

Can't really tell you much more, I pulled the BBC and all associated parts from that truck.
I should have done that as well, but I dimpled my header tube a tiny amount instead, I can get a .175 feeler gauge in there and that's about it. I have no dist problems at all there is about 1/2 an inch or so there.
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Old 06-02-2006, 07:03 PM   #12
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Re: Pics of Big Block in L-6 location wanted

I just took a 396 out of my swb 4X4 and put a 350 in it's place in the same spot the big block was. No differansce that I noticed. The only clearance issue was the bigblock headers hit the motor mount stands and the smallblock did not. Sorry I have no pics of this.
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Old 06-03-2006, 02:17 PM   #13
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Re: Pics of Big Block in L-6 location wanted

Thanks for all the responces guys, got some good ideas and I'll forge ahead with my project..............................Flat 67
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Old 06-03-2006, 04:09 PM   #14
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Re: Pics of Big Block in L-6 location wanted

I was thinking Yukon would see this thread and post it himself but if you didnt check out his webpage, then here it is. Brouse through it . He has that killer truck in there somewhere. http://yukon.b0xen.us/
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Old 06-03-2006, 05:26 PM   #15
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Re: Pics of Big Block in L-6 location wanted

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I was thinking Yukon would see this thread and post it himself but if you didnt check out his webpage, then here it is. Brouse through it . He has that killer truck in there somewhere. http://yukon.b0xen.us/
Thanks Olden, Yukon does have a nice website with lots of pics that will help me.................Flat 67
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