350 SBC 400 HP Build Help
Launching!
Joined: Apr 2005
Posts: 239
Likes: 0
Correct, sir! My 240Z's transmission tunnel is just nowhere near large enough to take a GM bellhousing, even if you were willing to do some precision work with a sledgehammer.
I've been told by several people now that they are running WC transmissions behind built 350's in these cars, and they hold up just fine so long as the trans is good to begin with. The lighter weight puts a lot less strain on the drivetrain, so the WC can take a lot more than 300 ft/lbs in my application.
I've been told by several people now that they are running WC transmissions behind built 350's in these cars, and they hold up just fine so long as the trans is good to begin with. The lighter weight puts a lot less strain on the drivetrain, so the WC can take a lot more than 300 ft/lbs in my application.
Thread Starter
Teching In
Joined: Aug 2009
Posts: 21
Likes: 0
A T56 fits fine with the required mods. The required mods cost thousands and limit clutch and flywheel options. I would rather spends thousands in different areas and not suffer the limited options.
Launching!
Joined: Apr 2005
Posts: 239
Likes: 0
i don't see how fabbing your own trans tunnel and **** costs thousands?
TECH Apprentice
Joined: Aug 2006
Posts: 368
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I would use the factory shortblock, with forged pistons, stock rods, stock crank. Use the factory 202 double hump heads, I forgot what cc they are, but you can deck them to increase the compression. Put 2.02 / 1.60 valves in them, and then throw on a performer or victor jr intake and a holley 750 street avenger carb...my buddy has that set up with a nice cam and it runs great...otherwise if you want to spend the money then buy some aluminum heads.
Thread Starter
Teching In
Joined: Aug 2009
Posts: 21
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Slingshot, I guess I should have mentioned that I bought these aluminum heads. It was a total no-brainer. They came with dual valve springs and the 1.6:1 roller rockers. $500 for the whole kit.
Thread Starter
Teching In
Joined: Aug 2009
Posts: 21
Likes: 0
Your idea of "easy, just fab the tunnel" doesn't make sense financially, timewise, asthetically, or functionally. The real answer is to just buy the right **** for the conversion so it all works right. I ain't gonna do either, so I ain't using a T56.
Launching!
Joined: Apr 2005
Posts: 239
Likes: 0
Been in a 240Z lately to see where the trans tunnel is, and what it would do to the whole car to widen it by 1"? Reaching behind your back to shift is also a no-go. Then there's the height, which would wreck the entire stock dash and console...
Your idea of "easy, just fab the tunnel" doesn't make sense financially, timewise, asthetically, or functionally. The real answer is to just buy the right **** for the conversion so it all works right. I ain't gonna do either, so I ain't using a T56.
Your idea of "easy, just fab the tunnel" doesn't make sense financially, timewise, asthetically, or functionally. The real answer is to just buy the right **** for the conversion so it all works right. I ain't gonna do either, so I ain't using a T56.
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Teching In
Joined: Aug 2009
Posts: 21
Likes: 0
Not bashing on you black, sorry if it reads that way. All I am saying is, when a known solution exists and it works, it's usually easier and to go with that engineered solution rather than try to engineer a new one. The point of the build would go from the overall swap to a new way to put a T56 into an S30, and that is not the build I am working on.
To build a car well and on budget, it is best to establish a concept and goals, and stick to it. Every time an option comes along - and many will come along - you weigh the options against the build concept and goals. If you consistently choose the options that are in keeping with your build, you win.
Reinventing the wheel on SBC transmission swaps into Datsuns is not in my build concept. I am building a quality SBC swap into a good 240Z on a tight budget. Budget doesn't have to mean cheap, and there is a very wide spectrum between cheap and "I'll pay whatever, I want the best."
To build a car well and on budget, it is best to establish a concept and goals, and stick to it. Every time an option comes along - and many will come along - you weigh the options against the build concept and goals. If you consistently choose the options that are in keeping with your build, you win.
Reinventing the wheel on SBC transmission swaps into Datsuns is not in my build concept. I am building a quality SBC swap into a good 240Z on a tight budget. Budget doesn't have to mean cheap, and there is a very wide spectrum between cheap and "I'll pay whatever, I want the best."
Thread Starter
Teching In
Joined: Aug 2009
Posts: 21
Likes: 0
They are pretty top-shelf. Specs:
Flow numbers @ 28" H2O:
Valve Lift .100" .200" .300" .400" .500" .600" .700"
Intake 67 122 175 223 252 259 265
Exhaust 57 110 153 182 196 204 207
Crazy.
- High-quench chamber
- Ports are .200" taller than standard small-block Chevy heads
- 64cc combustion chambers produce 10.2:1 compression with flat-top pistons in 350-inch engines
- 200cc Intake Runner
- 2.02" Intake and 1.60" Exhaust Valves
Flow numbers @ 28" H2O:
Valve Lift .100" .200" .300" .400" .500" .600" .700"
Intake 67 122 175 223 252 259 265
Exhaust 57 110 153 182 196 204 207
Crazy.
They are pretty top-shelf. Specs:
Flow numbers @ 28" H2O:
Valve Lift .100" .200" .300" .400" .500" .600" .700"
Intake 67 122 175 223 252 259 265
Exhaust 57 110 153 182 196 204 207
Crazy.
- High-quench chamber
- Ports are .200" taller than standard small-block Chevy heads
- 64cc combustion chambers produce 10.2:1 compression with flat-top pistons in 350-inch engines
- 200cc Intake Runner
- 2.02" Intake and 1.60" Exhaust Valves
Flow numbers @ 28" H2O:
Valve Lift .100" .200" .300" .400" .500" .600" .700"
Intake 67 122 175 223 252 259 265
Exhaust 57 110 153 182 196 204 207
Crazy.
those heads will support up to and above 500bhp n/a with the correct scr and dcr.
Launching!
Joined: Apr 2005
Posts: 239
Likes: 0
Thread Starter
Teching In
Joined: Aug 2009
Posts: 21
Likes: 0
I went with the Professional Products Crosswind (RPM Air Gap copy) aluminum intake, polished version for $200. It is very pretty. Bought my gaskets and flat top pistons; almost ready to give it to the shop.
I still need to select my hydraulic roller cam - getting lots of varied input. I have 1.6 roller rockers that I want to use; would that alter the cam recommendation you guys made?
I still need to select my hydraulic roller cam - getting lots of varied input. I have 1.6 roller rockers that I want to use; would that alter the cam recommendation you guys made?
Teching In
Joined: Oct 2009
Posts: 33
Likes: 0
From: lititz pa
I went with the Professional Products Crosswind (RPM Air Gap copy) aluminum intake, polished version for $200. It is very pretty. Bought my gaskets and flat top pistons; almost ready to give it to the shop.
I still need to select my hydraulic roller cam - getting lots of varied input. I have 1.6 roller rockers that I want to use; would that alter the cam recommendation you guys made?
I still need to select my hydraulic roller cam - getting lots of varied input. I have 1.6 roller rockers that I want to use; would that alter the cam recommendation you guys made?
