Ls1 swapped '70 w/pics

[19seventeeCustom]

Hey guys,

Just finishing up some small touches and tidbits on my c-10 ls1 swap.
You guys have helped out tremendously during this project, so I decided to post up a couple updated pics. The truck runs great. Idles good, shifts good, just all around nice. Only 1 complaint thus far and it happens to be slight vibration around 50-60 mph....hopefully i can track it down.

Goin back together:
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Engine bay:
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[mooseknuckles]

very nice...

[y5mgisi]

Very!

[nibs]

Clean swap man! Any during the swap pics?

[19seventeeCustom]

I've got some more pics, I'll try and get them up tonight

thanks guys
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[19seventeeCustom]

I've got some more pics, I'll try and get them up tonight

thanks guys
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[68Stepbed]

Looking good, man! I might just try and see it in person soon. I've been thinking of taking a road trip to Jonesboro to see some old friends, and I'm jonesin' for some catfish from Ron's.

[19seventeeCustom]

bring it on 68 stepbed, mmmmmm rons.....

anybody have any ideas on the vibration?? I'm thinking its the
driveshaft. it has new u joints, but I didn't have it balanced after I
bought it
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[19seventeeCustom]

here a few more pics, I didn't really take many, but this is a nice shortened version TV style!!

Right at home for the tear down!
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Here is what were yanking out...
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Diggin right in!

YIKES, what did I get myself into!
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Puttin my buddy to work on his day off...
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Gettin painted up and ready for an LS1!
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Test fits...
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Motor getting dressed and ready for install

Just a littel closer...
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Test fitting a few parts..
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Reassembly.

Frankenstein
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Gettin some rays!
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Installed and running..
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Will get more pics soon.....

[19seventeeCustom]

well. I'm startin to think my pinion angle is
the cause of my vibrations..... gonna grab a angle finder today
and will report back
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[mooseknuckles]

could be, mine was bad too, and it liked to bunny hop taking off, so I move it up a few degrees and it went away.....think the LS tranny's need a few extra degrees down compared to the sbc stuff...

[68Stepbed]

Originally Posted by 19seventeeCustom

bring it on 68 stepbed, mmmmmm rons.....

PM coming tour way. Yeah, since I moved back to Tennessee, nobody here does catfish like the fresh farm raised stuff there. It's kinda like going to the coast and getting fresh seafood compared to frozen.

[BR3W CITY]

did you use an angle finder when putting the engine in? Before you change the pinion angle at the rear end, you want to see if you can get around 4* at the engine, then change the rear end pinion the correct amount to align the driveline angles.

[19seventeeCustom]

Originally Posted by BR3W CITY

did you use an angle finder when putting the engine in? Before you change the pinion angle at the rear end, you want to see if you can get around 4* at the engine, then change the rear end pinion the correct amount to align the driveline angles.

the engine is right at 0*. can't go up anymore cause of trans
tunnel too close. can't really go down because my driver side header
wont clear the top of the a arm. don't think I can get -4 on the
trans...... the rearend pinion is at +3* which is way off for 0 at the
trans end. especially when a load is applied.

and moose, it kinda does feel like a bunny hop lol. I can feel it
in 2nd gear all the way til about 50 or a bit more

I was gonna try a 4* shim in the rear and hopefully with
the load applied it will put it close to parallel with the trans yoke
????
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[BR3W CITY]

thats a little ugly... You can't even get a degree down on the motor? running at 0* is NOT ideal.

[19seventeeCustom]

well I was under the impression from lots and lots of reading
that it doesn't really matter what the motor is sitting as long
as you have the shaft at 0* working angle under load...... which
I could accomplish with 4* shims.

I guess if I get the shims in and it still has some vibration I could
raise the tranny about a degree and the rearend would still be real
close being right with -1*
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[BR3W CITY]

there is truth to that BUT
LSx motors are set to between -2 and -4 to facilitate oil drain back to the pans pickup (not sure if it matters for dry sump cars)
and
its also supposed to help the steam that can get in the heads (these motors have the steam lines as well), from forming hot pockets on cyl #7 and #8

[19seventeeCustom]

Originally Posted by BR3W CITY

there is truth to that BUT
LSx motors are set to between -2 and -4 to facilitate oil drain back to the pans pickup (not sure if it matters for dry sump cars)
and
its also supposed to help the steam that can get in the heads (these motors have the steam lines as well), from forming hot pockets on cyl #7 and #8

I see what your saying, but what about vettes?? the engine sits
at 0* in that platform. no known oiling issues or steam issues.....
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[BR3W CITY]

hence why I had a little aside about dry sump cars.
The vettes also have 2 sets of steam lines, vs just the front crossover on truck engines.

[19seventeeCustom]

all c5 vettes were wet sump cars and in 2001+ the ls6 intake only had one set of steam vents like my ls1...

I don't wanna get into a debate on weather or not you can run an ls
motor at 0* because it has been done a million times with no
I'll effects thus far. Just trying to solve pinion angle issues
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[BR3W CITY]

Straight from classic performance (I'm not arguing, I'm trying to get your truck on the road)

"Also, Chevy engines run on the four-degree rule. That is, the engine usually sits on a four-degree downward angle from front to back. Even though the LS engines sit at a zero angle in the Vettes, the four degrees is recommended to help with your pinion angle."

http://www.classicperform.com/tech_a...ngine-Swap.htm

[19seventeeCustom]

awesome. which means -1* pinion angle and 0* engine angle would be roughly the same as
3* pinion and -3* engine angle.
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[Hart_Rod]

Originally Posted by 19seventeeCustom

awesome. which means -1* pinion angle and 0* engine angle would be roughly the same as
3* pinion and -3* engine angle.
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You can also flip your front trailing arm mounts to help with your pinion angle. Or switch to a two piece driveshaft. Just a couple more options for you to consider. Let us know how it comes out. Cool truck btw, .
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[19seventeeCustom]

thanks for the info hart rod

I'll def give an update to let everyone know how it turns out
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