twinturbo66
07-24-2014, 01:05 AM
Hello All,As you can see from my signature I have a 66 mustang coupewith a fuel injected 347 stroker motor. It has twin T3/T4 turbo’s and the power is put down through a Lentec AODwith a manual valve body. I have an 8.8rear axle but it has a worn out diff and only 28 spline axles.
Here is the issue, My car keeps blowing head gaskets. Nowthis last time I’m not 100% sure that it was a blown head gasket but I’m maybe90% sure. I haven’t broken down themotor yet to see.
1) The first time the car blew a head gasket I hadn’tcompletely upgraded the cooling system to what it is now so I thought that itoverheating maybe caused the head gasket to blow… When my mechanic broke downthe motor he realized that the original guy that put it together used the wronghead gaskets, didn’t have stuff torqued to spec and he didn’t have the AFRheads machined for the ringlock head gaskets. I figured all those contributed to it so we fixed it and put it backtogether. Also resolved the overheatingby installing a Ron Davis radiator with a nice shroud and twin electric fans,Mezeire electric water pump and a custom Turbonetics Air to Airintercooler. We also added a transcooler and an oil cooler to help keep all my fluid temps down.
2) So the car was tuned and was putting down around450whp and 440tq through the AOD. I knowwith even a low estimate on drivetrain loss that it had over 500hp at the crankwhich could have contributed to the motor giving up or whatever happened.
I’m currently deployed and I’m trying to decide which optionand where to go from here. I figure thebelow are my best options. With any ofthese I would more than likely have to get a IFS front suspension to remove myshock towers for better clearance and air flow. I would also have to throw in about 1k towardsstrengthening my Lentech and another 1500 for the rearend to give me new axlesand a new diff.
1) Get a nice 347 Cubic inch (331 stroke with thelarger bore giving me 347) DART block with forged internals and throw on some larger flowing AFR heads, larger injectors andturn up the boost.
2) Get rid of the turbos and simply thow in a nicenew Coyote motor with a six speed auto out of a new 5.0.
3) Grab a Junkyard LS motor for $600 bucks and turnup the boost until I blow it and after that spend another $600. Pretty cheap. Iwould get instantly banned from this site and shunned anytime someone asks meto open up the hood.
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1966 Mustang Coupe- late model 347 FI Stroker motor 9:1:1(I believe), twin T3/T4 Hybrids, Lentech AOD w/manual valvebody. SN95 Front suspension with 4 wheel Cobra Disc brakes using hydraboost. 8.8inch rear end, 28 spline axles/3.55 gears and worn out diff. 450hp/440tq @10lbs of boost
Here is the issue, My car keeps blowing head gaskets. Nowthis last time I’m not 100% sure that it was a blown head gasket but I’m maybe90% sure. I haven’t broken down themotor yet to see.
1) The first time the car blew a head gasket I hadn’tcompletely upgraded the cooling system to what it is now so I thought that itoverheating maybe caused the head gasket to blow… When my mechanic broke downthe motor he realized that the original guy that put it together used the wronghead gaskets, didn’t have stuff torqued to spec and he didn’t have the AFRheads machined for the ringlock head gaskets. I figured all those contributed to it so we fixed it and put it backtogether. Also resolved the overheatingby installing a Ron Davis radiator with a nice shroud and twin electric fans,Mezeire electric water pump and a custom Turbonetics Air to Airintercooler. We also added a transcooler and an oil cooler to help keep all my fluid temps down.
2) So the car was tuned and was putting down around450whp and 440tq through the AOD. I knowwith even a low estimate on drivetrain loss that it had over 500hp at the crankwhich could have contributed to the motor giving up or whatever happened.
I’m currently deployed and I’m trying to decide which optionand where to go from here. I figure thebelow are my best options. With any ofthese I would more than likely have to get a IFS front suspension to remove myshock towers for better clearance and air flow. I would also have to throw in about 1k towardsstrengthening my Lentech and another 1500 for the rearend to give me new axlesand a new diff.
1) Get a nice 347 Cubic inch (331 stroke with thelarger bore giving me 347) DART block with forged internals and throw on some larger flowing AFR heads, larger injectors andturn up the boost.
2) Get rid of the turbos and simply thow in a nicenew Coyote motor with a six speed auto out of a new 5.0.
3) Grab a Junkyard LS motor for $600 bucks and turnup the boost until I blow it and after that spend another $600. Pretty cheap. Iwould get instantly banned from this site and shunned anytime someone asks meto open up the hood.
__________________
1966 Mustang Coupe- late model 347 FI Stroker motor 9:1:1(I believe), twin T3/T4 Hybrids, Lentech AOD w/manual valvebody. SN95 Front suspension with 4 wheel Cobra Disc brakes using hydraboost. 8.8inch rear end, 28 spline axles/3.55 gears and worn out diff. 450hp/440tq @10lbs of boost