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#1 |
Registered User
Join Date: Jan 2010
Location: Forsyth, Ga
Posts: 1,012
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V-8 swap
Correct me if I am wrong, been a bit. To put a v-8 in place of the I-6 do you just move the motor perches? Or is it a whole other set of perches?
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#2 |
Registered User
Join Date: Dec 2011
Location: Creighton Sask. Canada
Posts: 4,121
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Re: V-8 swap
When I changed to a V8 on a 67-72 I had to change mounts and also move them.
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1987 Green n Green machine. 5.0 4spd std. 7" lift w 35's. |
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#3 |
Registered User
Join Date: Jun 2013
Location: joshua tree ca.
Posts: 1,484
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Re: V-8 swap
JUST move back UNLESS you have a 292 then you have to change the right/pass side bracket
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#4 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,247
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Re: V-8 swap
In the '63-'66 trucks the 230/250I6's and the small blocks were installed in the same location and with the same engine mounts and frame brackets. The engine mounts themselves are the same from '63-'72, except for the '68-'72 big blocks. If you want to move the engine forward, you will need a set of frame brackets for a '67-'72 with a small block. Personally I have never had an issue with a small block installed in the original location, even with an HEI.
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Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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#5 |
Senior Member
![]() Join Date: Oct 2007
Location: Marietta, GA
Posts: 797
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Re: V-8 swap
Agree with CaptFab. I replaced the I6 with a 350 in my 64 C10, and couldn't believe how easy it was. Not only do the mounts and frame brackets interchange, you can use the same bellhousing, flywheel, clutch, pressure plate, release bearing, and starter. On mine, even leaving the frame stands in the original location, there was still plenty of room for an HEI distributor.
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#6 |
Registered User
Join Date: Jun 2013
Location: joshua tree ca.
Posts: 1,484
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Re: V-8 swap
OOPS I stand corrected I was under the impression that like the GMC V6 that the L6 used the front holes ( and I am doing the V6 to V8 right and that could have FOGGED up my already CLOUDY head LOL) ....Knew that the brackets where the same EXCEPT the right for 292
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#7 |
Registered User
Join Date: May 2015
Location: Richland, WA
Posts: 128
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Re: V-8 swap
Wow....so a stock GM HEI distributor will fit? Just got my truck and it has a 350 and it looks way too close to the firewall. Would anyone be able to give me a diameter size of the HEI distributor so I could check my clearance?
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#8 |
Senior Member
![]() Join Date: Oct 2007
Location: Marietta, GA
Posts: 797
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Re: V-8 swap
It's a tad tight, but if you remove the distributor cap the HEI distributor can easily be removed and replaced with the engine still in the truck.
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#9 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,247
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Re: V-8 swap
I agree. I usually remove the rotor too, just to give a little bit more room. Like I said, I have never had a problem with installing a HEI in a '63-'66 truck with a small block in the original rear location.
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Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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#10 |
Registered User
Join Date: Jun 2014
Location: Connecticut
Posts: 521
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Re: V-8 swap
I'll say tight. I don't know what has shifted, but at one point I was able to turn my HEI to adjust timing, but when I attempted to check and adjust things tonight, the cap was wedged up against the firewall.
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#11 |
Registered User
Join Date: Feb 2008
Location: Sidney,b.c.
Posts: 4,425
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Re: V-8 swap
only one of 2 things can cause that . either your eng mounts are shot or your cab mounts are
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#12 |
Registered User
Join Date: Jun 2014
Location: Connecticut
Posts: 521
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Re: V-8 swap
The cab mounts did the trick. The P.O. stacked a bunch of mounts together to act as sort of a body lift, so replacing the mounts lowered the cab a bit, but the angle must have shifted just enough because I just tried turning my distributor and was able to do it enough that I'll be able to reset my timing as part of a bigger tune up.
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