Stock lm7 turbo build

RDF1 · Mar 17, 2024

Sean Buick 76 said:
It’s pretty typical to have broken bolts on these LS engines.

In the 20 years i been messing with these engines i think ive only gotten lucky 2 times with no broken bolts in the heads.
I learned quick to run a tap through all the threaded holes before putting the engine in vehicle. Saves quite the headache.

Romanheystek · Mar 17, 2024

RDF1 said:
In the 20 years i been messing with these engines i think ive only gotten lucky 2 times with no broken bolts in the heads.
I learned quick to run a tap through all the threaded holes before putting the engine in vehicle. Saves quite the headache.

Okay good that’s a relief in a way lol

RDF1 · Mar 17, 2024

Romanheystek said:
Okay good that’s a relief in a way lol

They always have those fronts and rear bolts broken off. I guess it's from thermal expansion over the years

Sean Buick 76 · Mar 17, 2024

RDF1 said:
They always have those fronts and rear bolts broken off. I guess it's from thermal expansion over the years

The difference in expansion and contraction between the alum heads and exhaust manifolds must be the cause. Either way the problem seems to be solved with ARP studs and Remflex gaskets at least NA.

For boosted engines which exhaust gaskets are you using and which turbo kits or headers?

RDF1 · Mar 17, 2024

I always use the MLS gaskets. Felpro or Cometics.
And most turbo setups are Huron Speed or a home made system using factory manifolds.

Romanheystek · Mar 17, 2024

Sean Buick 76 said:
The difference in expansion and contraction between the alum heads and exhaust manifolds must be the cause. Either way the problem seems to be solved with ARP studs and Remflex gaskets at least NA.

For boosted engines which exhaust gaskets are you using and which turbo kits or headers?

I was planning on just making a home mad one because it’ll be cheaper.

87montecarlomrc · Mar 18, 2024

if you want a fun street truck going with an ls and a 4l80e with a turbo is the way to go. I'm finishing up my turbo truck and so far it's a blast to drive. I'm running an LM7 with a vs racing 78/75 turbo.

Sean Buick 76 · Mar 18, 2024

Romanheystek said:
I was planning on just making a home mad one because it’ll be cheaper.

This would be worth looking into:

New Huron Speed V4 99-13 GM 1500 Manifold Only - T4

Huron Speed V4 T4 Turbo Manifold for 99-13 1500 Truck *Build per order, please contact for lead time. V4 Turbo Manifold - T4: -Stainless .120 wall Passenger-side turbo log with 2.5" V-band flange in rear. T4 Turbo flange up top. 44-46mm Wastegate flange in line of exhaust flow, all welded on and...

www.huronspeed.com

Drunkcanuk · Mar 18, 2024

87montecarlomrc said:
if you want a fun street truck going with an ls and a 4l80e with a turbo is the way to go. I'm finishing up my turbo truck and so far it's a blast to drive. I'm running an LM7 with a vs racing 78/75 turbo.

You have any more information you would like to share with us about that???
Like a build thread by chance, I see that's only your second post in over a decade.....and it's a good one!!! Lol

Romanheystek · Mar 18, 2024

87montecarlomrc said:
if you want a fun street truck going with an ls and a 4l80e with a turbo is the way to go. I'm finishing up my turbo truck and so far it's a blast to drive. I'm running an LM7 with a vs racing 78/75 turbo.

That looks amazing that’s what I’m striving to do. Do you needa run slicks?

Stock lm7 turbo build

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