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#1 |
Registered User
Join Date: Jul 2008
Location: Gate City VA
Posts: 576
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Is it ok to leave a v8 in the six cylinder position???
Any info appreciated. . .
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Mitch 22yrs. Young 1970 GMC Short-Step 350/TH350 Combo. . ![]() Current Project 68 Gmc "Second Chance" Go to my 68 GMC Shorty Rebuild Thread http://67-72chevytrucks.com/vboard/s...39#post6341739 Last edited by mas09ts; 02-05-2009 at 12:55 PM. |
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#2 |
Active Member
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Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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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. |
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#3 |
Registered User
Join Date: Jul 2008
Location: Gate City VA
Posts: 576
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Re: V8 in 6 cylinder position???
Well, mine is closer to the firewall see the pics below
![]() ![]() ![]() Is it alright sitting like this??? I believe so what do you guys think??
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Mitch 22yrs. Young 1970 GMC Short-Step 350/TH350 Combo. . ![]() Current Project 68 Gmc "Second Chance" Go to my 68 GMC Shorty Rebuild Thread http://67-72chevytrucks.com/vboard/s...39#post6341739 |
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#4 |
Special Order
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Location: Mt Airy, MD
Posts: 85,859
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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.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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#5 |
Registered User
Join Date: Jul 2008
Location: Gate City VA
Posts: 576
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Re: V8 in 6 cylinder position???
But I shouldn't have any problems with it like this should I?
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Mitch 22yrs. Young 1970 GMC Short-Step 350/TH350 Combo. . ![]() Current Project 68 Gmc "Second Chance" Go to my 68 GMC Shorty Rebuild Thread http://67-72chevytrucks.com/vboard/s...39#post6341739 |
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#6 |
Registered User
Join Date: Apr 2005
Location: Portsmouth, VA
Posts: 59
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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.
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#7 |
Chevy nut
Join Date: Jun 2007
Location: Springfield, Illinois
Posts: 2,266
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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.
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84 Chevy Custom Deluxe 1/2 Ton Named Fade To Black II "Remember kids there is NO replacement for displacement!" |
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#8 |
Registered User
Join Date: Jul 2008
Location: Gate City VA
Posts: 576
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Re: V8 in 6 cylinder position???
So I probably need to get a fan shroud, I'll track one down.
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Mitch 22yrs. Young 1970 GMC Short-Step 350/TH350 Combo. . ![]() Current Project 68 Gmc "Second Chance" Go to my 68 GMC Shorty Rebuild Thread http://67-72chevytrucks.com/vboard/s...39#post6341739 |
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#9 |
Senior Member
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Location: Marietta, GA
Posts: 797
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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.
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#10 |
Roadtrip!
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Location: Grand Rapids MN
Posts: 13,736
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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...
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67 gmc custom lwb dakota truck. Sold...And bought back 69 swb 4x4 project (in progress) 70 c-10 lwb texas truck 70 4x4/BB/bkts/posi/tach(retired) 70 swb (wifes) 70 jimmy camper 71 K-5 factory 2wd 71 cheyenne 4x4/tach/posi/ plow rig 71 Cheyenne20 BB, buckets, tach, tilt, 4 speed 72 jimmy CST wyoming rig 72 jimmy Colorado rig 72 lifted texas 4x4 3/4 ton burb 65 fury conv. 383/auto 65 chrysler 300 "L" 413 auto |
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#11 |
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Re: V8 in 6 cylinder position???
Yeah,1/2 the swaps are done that way.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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#12 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: V8 in 6 cylinder position???
that's where the small block goes on a 4X4... you'll be fine.
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#13 |
Droppin' It Like It's Hot!
Join Date: Jun 2007
Location: Battlefield, Missouri
Posts: 2,934
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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.
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Robert
Life Member RIP CAROL JANICE HARTMAN. BELOVED MOTHER. 01/04/53 - 03/05/09 1969 ![]() Norwood, MO 2007 Big Sandy, TN 2008 Had nothing to do with the forklift! Kirkwood, MO (Midwest Meet 2009) Midwest All Truck Nationals, KCMO - 2008 - 2009 - 2010 - 2012 - 2014 SUPPORT THE SITE HERE! Last edited by bobbo; 02-05-2009 at 05:26 PM. |
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#14 |
Active Member
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Location: Centrally located between Houston, Austin and Waco. BCS area.
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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. Last edited by 68gmsee; 02-05-2009 at 05:42 PM. |
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#15 |
Chevy nut
Join Date: Jun 2007
Location: Springfield, Illinois
Posts: 2,266
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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.
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84 Chevy Custom Deluxe 1/2 Ton Named Fade To Black II "Remember kids there is NO replacement for displacement!" |
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#16 |
Registered User
Join Date: Nov 2006
Location: Alabama
Posts: 120
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Re: V8 in 6 cylinder position???
Makes sense why the 4x4 shroud works better.(I learn something on here every day)
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#17 |
Registered User
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Location: St.Petersburg,Fl
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Re: V8 in 6 cylinder position???
It works better in the six cyl. position if you're racing. Better weight transfer.
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#18 |
Senior Member
Join Date: Jul 2004
Location: Clarks Hill, Indiana
Posts: 733
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Re: V8 in 6 cylinder position???
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...
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1969 K10 - V8, 465, 205, 12 bolt, D44 2002-current 1969 K20 - V8, 465, 221, Eaton, D44 2012-current Nothin' but drums on all 4 corners! past horses in the stable 72 C10-short step (97-02), 68 C10-long fleet (06-12) |
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#19 |
Registered User
Join Date: Jul 2008
Location: Gate City VA
Posts: 576
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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.
__________________
Mitch 22yrs. Young 1970 GMC Short-Step 350/TH350 Combo. . ![]() Current Project 68 Gmc "Second Chance" Go to my 68 GMC Shorty Rebuild Thread http://67-72chevytrucks.com/vboard/s...39#post6341739 |
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#20 |
Registered User
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Location: Avondale, PA. South east corner of the state
Posts: 75
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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.
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#21 |
Registered User
Join Date: Jul 2008
Location: Gate City VA
Posts: 576
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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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Mitch 22yrs. Young 1970 GMC Short-Step 350/TH350 Combo. . ![]() Current Project 68 Gmc "Second Chance" Go to my 68 GMC Shorty Rebuild Thread http://67-72chevytrucks.com/vboard/s...39#post6341739 |
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