lq4 tc78 build.
lq4 tc78 build. thought id throw my turbo lq4 build on here and see what you guys think.
engine is a stock 2005 lq4 with a fresh crank and bearings stock rings with the rings opened up to .024,gm musclecar pan, stock 317 heads , 206/212 comp cam528/540 lift. 114 ls, 7.4 comp pushrods,comp 1.75 rollers and 8017 pac dual springs, stock truck intake(2003 intake) with return fuel line with 60#or 80# injectors. stock truck manifolds turned around with vbands welded on 2 1/2 crossover ,tc78 turbo with .96 housing , 350 th with 3000 stall, stock body 1970 nova 3.73 gears now but will most likely be 3.23 gears.
as it sits im thinking about hp tuners or efilive I have a stock ecm and harness that needs redone. and im thinking of trying a walbro 450lph pump in my fuel cell .
looking for 10 flat at 135 mph car will see some track runs but more street driving and driving what I want is more power than I have now with my 406 11 sec motor with much better drivability. thanks in advance.
engine is a stock 2005 lq4 with a fresh crank and bearings stock rings with the rings opened up to .024,gm musclecar pan, stock 317 heads , 206/212 comp cam528/540 lift. 114 ls, 7.4 comp pushrods,comp 1.75 rollers and 8017 pac dual springs, stock truck intake(2003 intake) with return fuel line with 60#or 80# injectors. stock truck manifolds turned around with vbands welded on 2 1/2 crossover ,tc78 turbo with .96 housing , 350 th with 3000 stall, stock body 1970 nova 3.73 gears now but will most likely be 3.23 gears.
as it sits im thinking about hp tuners or efilive I have a stock ecm and harness that needs redone. and im thinking of trying a walbro 450lph pump in my fuel cell .
looking for 10 flat at 135 mph car will see some track runs but more street driving and driving what I want is more power than I have now with my 406 11 sec motor with much better drivability. thanks in advance.
While it may not be ideal..... that turbo can still haul ***.
You should set it up with twin pumps from the start and bigger injectors.
This 6.0 powered Mustang with a TH400 and TC78 went 9.32 @ 150.7mph
https://ls1tech.com/forums/forced-in...-150-tc78.html
You should set it up with twin pumps from the start and bigger injectors.
This 6.0 powered Mustang with a TH400 and TC78 went 9.32 @ 150.7mph
https://ls1tech.com/forums/forced-in...-150-tc78.html
I was going to get it running and turn it up slowly I have heard there is a couple different housings up to a 1.52 ar that should help.
I thought about the dual pumps then I found the walbro 450lph pump and thought it whould be as good im still looking into the fuel system.
I thought about the dual pumps then I found the walbro 450lph pump and thought it whould be as good im still looking into the fuel system.
Converter will make or break you, spend the money and get a good one.
One of the best spooling setups I've seen was a 6.0 with 5.3 heads, fairly good size cam, tc76 with .96 housing. Made 720rwhp to 6000rpm on 18lbs and spooled instantly.
One of the best spooling setups I've seen was a 6.0 with 5.3 heads, fairly good size cam, tc76 with .96 housing. Made 720rwhp to 6000rpm on 18lbs and spooled instantly.
