I just have a quick question. The vortec 350(aka L31) has vortec heads on it obviously. Does the LT1 350 have the same vortec heads? Is the intake bolt pattern on a LT1 the same as the bolt pattern on a L31 vortec 350? Thanks
-Vance
LT1 and L31 comparison question
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phatmaxx87
Topic author - I finally get the smurf thing
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LT1 and L31 comparison question
96' Chevy Astro Cargo. Custom paint. 5.7 Vortec motor stroked out to a 383ci. 17" wheels Dad stripped it.
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Cobra
- I plan to be buried in my van
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Re: LT1 and L31 comparison question
i'm no engine expert but from what i've seen the heads are not the same and aren't interchangable i'm pretty sure the coolant flows are opposite.
I'm sure someone more knowledgable will chime in soon
if you've got anymore questions feel free to not ask me (sorry i can't help lol)
I'm sure someone more knowledgable will chime in soon
if you've got anymore questions feel free to not ask me (sorry i can't help lol)
1998 GMC Safari AWD, BFGoodrich AllTerrain T/A
Jet performance tuner 91 octane preset, Jet under-drive pulleys
Rancho 999000 series shock, on-board controller to be installed later
DHC rock rails and skid plate Add-A-Leaf
G3500 front calipers
Zexel Torsen Diff
11" drums
180 amp Alternator
Long tru-cool 4590 trans cooler
1997 gone
Jet performance tuner 91 octane preset, Jet under-drive pulleys
Rancho 999000 series shock, on-board controller to be installed later
DHC rock rails and skid plate Add-A-Leaf
G3500 front calipers
Zexel Torsen Diff
11" drums
180 amp Alternator
Long tru-cool 4590 trans cooler
1997 gone
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GEJ
- I plan to be buried in my van
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Re: LT1 and L31 comparison question
Cobra wrote:i'm no engine expert but from what i've seen the heads are not the same and aren't interchangable i'm pretty sure the coolant flows are opposite.
I'm sure someone more knowledgable will chime in soon
if you've got anymore questions feel free to not ask me (sorry i can't help lol)
Yeppers,Cobra is right.Question is are you looking to upgrade the heads you have??.
Call me Gary
1985 Astro-"Ole Yellar"
1994 LT Astro
1981 Winnebago-"Baby"
12'dual axle enclosed trailer
The vendor trailer
Lead with my heart & take the hits because of it like a man.
1985 Astro-"Ole Yellar"
1994 LT Astro
1981 Winnebago-"Baby"
12'dual axle enclosed trailer
The vendor trailer
Lead with my heart & take the hits because of it like a man.
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zombie{[six]}
- I finally get the smurf thing
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Re: LT1 and L31 comparison question
From my research the 'vortec' intake engines have reverse flow heads.
our TBI engines have 'vortec' head which are "high flow"
our TBI engines have 'vortec' head which are "high flow"
crate 350 bored .60 over, 700R4, lifted...yada yada yada. Who cares what i have, ITS FAST AND I LOVE DRIVING IT!!!
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ASTROJOE LT1
- I am merely driving my van
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Re: LT1 and L31 comparison question
The LT1 heads will not bolt up to a Vortec block. Here is an article that you can read for more information.
http://www.chevyhiperformance.com/techa ... index.html
http://www.chevyhiperformance.com/techa ... index.html
Joe
89 ASTRO CL Shorty,95 Corvette LT1 Engine,4L60E,
89 ASTRO CL Shorty,95 Corvette LT1 Engine,4L60E,