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-   -   V8 in 6 cylinder position??? (https://67-72chevytrucks.com/vboard/showthread.php?t=327235)

mas09ts 02-05-2009 12:55 PM

V8 in 6 cylinder position???
 
Is it ok to leave a v8 in the six cylinder position???

Any info appreciated. . .

68gmsee 02-05-2009 01:06 PM

Re: V8 in 6 cylinder position???
 
I used mine like that for many years because I wasn't comfortable with how close the distributor was to the firewall. The only thing I noticed was a slight weight shift towards the front. Also, my drive shaft yoke was engaging the 350 transmission by only 1-1/2 inches.

On my next rebuild I'm thinking of moving the mounts back about 1 to 1-1/2 inch and redrilling the bolt holes. That will still give me plenty of clearance on dis and shift the weight more to the back.

mas09ts 02-05-2009 01:19 PM

Re: V8 in 6 cylinder position???
 
Well, mine is closer to the firewall see the pics below

http://widget.slide.com/rdr/1/1/1/W/...mwL7r8w4Jk.jpg
http://widget.slide.com/rdr/1/1/1/W/...Av8RHyJPIZ.jpg
http://widget.slide.com/rdr/1/1/1/W/...yx5U3r6DFs.jpg


Is it alright sitting like this??? I believe so what do you guys think??

special-K 02-05-2009 01:23 PM

Re: V8 in 6 cylinder position???
 
You mean when the V8 is mounted back in the 6cyl position?Where the transmission is in the position for a 6cyl,right?.Yes,it`s ok.I don`t,I always set a V8 forward so it`s not all stuffed back into the firewall and sits the way the factory did.

mas09ts 02-05-2009 01:38 PM

Re: V8 in 6 cylinder position???
 
But I shouldn't have any problems with it like this should I?

TDs6t9 02-05-2009 01:44 PM

Re: V8 in 6 cylinder position???
 
The only thing I have noticed is in that position with a single core radiator is the truck seems to run a little warmer, if you don't have a fan shroud. Everything else on mine has been great.

caminokid 02-05-2009 02:14 PM

Re: V8 in 6 cylinder position???
 
So let me get this right...Its ok for the 8 to sit in the 6 position? I am getting ready to this swap. I have everything to do it...but dont want to rip everything apart.

mas09ts 02-05-2009 02:24 PM

Re: V8 in 6 cylinder position???
 
So I probably need to get a fan shroud, I'll track one down.

MikeN 02-05-2009 03:00 PM

Re: V8 in 6 cylinder position???
 
I've done the 230-I6 to 350-V8 swap on my 64 C10. My truck is a 3-speed manual, and I left both the engine mounts and the bellhousing side mounts in the original, I6 location. Works like a charm. Distributor is a little tight to the firewall, but no big deal.

too much stuff 02-05-2009 03:07 PM

Re: V8 in 6 cylinder position???
 
You shouldn't have any problems other than being snug with the dist. I used a 4x4 fan shroud which fit nicely and ran fairly cool...

special-K 02-05-2009 04:17 PM

Re: V8 in 6 cylinder position???
 
Yeah,1/2 the swaps are done that way.

Longhorn Man 02-05-2009 05:20 PM

Re: V8 in 6 cylinder position???
 
that's where the small block goes on a 4X4... you'll be fine.

bobbo 02-05-2009 05:24 PM

Re: V8 in 6 cylinder position???
 
My 283 is mounted in the 6 cyl position. A bit close on the dizzy but there is enough clearance. I have driven mine like this to TN, CO, Kansas City, and hundreds of miles in between with no problems. I installed an electric cooling fan so I don't have any issues with the shroud/fan. I also have the HEI dizzy which is a bit larger than the points or other ones. Have about 1/4" between the firewall and the cap. As long as your motor mounts are good, you shouldn't have any problems.

68gmsee 02-05-2009 05:42 PM

Re: V8 in 6 cylinder position???
 
[QUOTE=68gmsee;3126708]I used mine like that for many years (and then moved it forward) because I wasn't comfortable with how close the distributor was to the firewall. The only thing I noticed was a slight weight shift towards the front....
QUOTE]

Sorry left words out. That's what happends when you get old and get distracted... :(

I mentioned the weight shift and drive shaft problem in case you decide to move it forward to give you more clearance. I had the original 6 cylinder front springs and someone mentioned to me that there was a difference between those and the V8 springs when they came out.

caminokid 02-05-2009 05:47 PM

Re: V8 in 6 cylinder position???
 
Now i wonder if my headers are going to fit...and if my exhaust is going to fit off my old 69? I can put electric fans in.

Blue71LWB 02-05-2009 06:14 PM

Re: V8 in 6 cylinder position???
 
Quote:

Originally Posted by Longhorn Man (Post 3127111)
that's where the small block goes on a 4X4... you'll be fine.

Makes sense why the 4x4 shroud works better.(I learn something on here every day)

bigsnookmaster 02-05-2009 07:16 PM

Re: V8 in 6 cylinder position???
 
It works better in the six cyl. position if you're racing. Better weight transfer.

1969K10 02-05-2009 07:45 PM

Re: V8 in 6 cylinder position???
 
Quote:

Originally Posted by caminokid (Post 3127155)
Now i wonder if my headers are going to fit...and if my exhaust is going to fit off my old 69? I can put electric fans in.

I ran headers on my V8 in the I6 position. Had to run the Z-bar for the clutch thru the header, between 5 & 7. Ran like that for nearly 100K until some lady felt like shortening my '72 by pulling out in front of me...

mas09ts 02-05-2009 07:49 PM

Re: V8 in 6 cylinder position???
 
Well thanks guys, I didnt think about moving the mounts when I done the v8 swap. I thought you could do it this way though. But thanks for everyting, I just wasnt sure if it would be alright.

john02fxdl 02-05-2009 08:53 PM

Re: V8 in 6 cylinder position???
 
OK, since we're on the topic, I am also doing a I6 to V8 conversion and a 3spd manual to TH350 swap. Already took out mid-mount crossmember. I thought someone said on here to swap the I6 perches(left to right, right to left) and put them in the front holes. I tried that, doesn't line up. Do I have to bend the bottom of the perch to get it to line up with the holes on the crossmember? Since I'm doing a complete swap, I want the 350 in the front holes and I'll install the tranny crossmember where it lines up with the trans. Or just search the boneyard for V8 mounts already in front holes, that way I know I'll get the right ones. Sorry to bust in on your dilemma, just that I had a similar question and no sense posting a new thread for the same topic.

mas09ts 02-05-2009 09:02 PM

Re: V8 in 6 cylinder position???
 
Hey thats alright john02fxdl, maybe this thread can help alot of people. My question has done been answered.


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