new owner 74 260z

[3sev3n]

what up im new here and have some questions but first i am now the owner of a nice 74 260z and it has been changed to a 5-speed the l26 motor is nice but im looking for a little more hp is there any thing i could do to make it roar? turbo,super charged,ram air? any thing like that any help would be help full

[bigoak]

Welcome aboard.

For the more aggressive HP mod's, you'll want to check out the hybridz board.

Things you can do to a 260Z.

1) Remove flat top carbs and move to round-top SU's. Better performance, easier to keep in tune.

2) Let her breathe...Upgrade cam / carbs / exhaust.

i) Move to a beefy cam (Motorsport Auto is one source; be careful, ensure it is for street use and not just hard core racing).

ii) Install triple Webers carbs

iii) Exhaust header

3) Upgrade to an L28 (possibly an L28 Turbo).

4) Get your engine or a transplant rebuild / refreshed. Build a stroker, etc.

All kinds of options. You can dump a ton of money into performance and you will almost never see it back if you sell. Spend it if you intend to enjoy it.

[beandip]

The 260 block has the same crank as a 280 so the little difference is not as significant as if you were driving a 240. Changing ignition to electronic will help wake up this engine and by all means change the flat topped carbs to SUs. Check and see what diff gear ratio you are running. If the PO just stuck in a 5 speed and kept the old ratio . find a 3.90 diff. with your overdrive 5th gear you will have good hi way speed and much more torque off the line. These three things will make a good difference. From there it is big bucks . Just how fast do you want to spend. Gary:rambo:

[tony5050]

guys,

hijacking this thread abit..

any good website that i can log on to and buy engine performance parts like the cams etc etc. Preferbaly those not transacting through paypal as paypal is not really a convenient thing in Malaysia. Thanks a mil!!

[fixitman]

Here is a list of a few upgrades to my early 260. A few photos are available in my user gallery.

Production date: April 1974

Air box: K&N Lamborghini 3-carb filter in aluminum housing with Mikuni air horns

Alternator: 60 amp

Camshaft: Racer Brown SS-54-110 – 236 degree duration at 0.025” lift with 0 lash, 110 degree lobe centers, and 0.480” lift net, and valve spring/retainer package

Carburetion: Mikuni triple side draft, 40PHH with 32mm chockes

Cylinder head: Decked 0.020”

Bronze valve guides

280Z intake valves, 0.173” dia.

280Z exhaust valves

Valves and seats grinded

Built by Floyd Link, Torrance, CA

Exhaust:

Header: Euro Car Anti-Reversionary, 1 ½” dia. tubing, 3 into 2, 2 ¼” dia. collector outlet

System Dia.: 2 ¼”

Resonator: Borla resonator

Muffler: Borla turbo muffler

Ignition: New stock coil

New stock distributor

Taylor 8mm Spiro-Pro

NGK Iridium spark plugs

Oil pump: ZX-Turbo unit

Pistons: Datsun 0.040” over, flat top

Differential: R180 limited slip, 3.545 R&P set, Bob Sharp Racing spare

Transmission: 280Z 5-speed

Good luck.

Fixitman

[imcatman64]

Hey out there i'm a new 74 260z owner and I could use some help. How do I find out about the production runs for automatic transmissions? Someone out there told me they only made 16, is it true? I have one with only 18,000 miles on it, factory air, even the factory tires. Only thing not factory are the carbs.

Thanks, Catman.

[d240zx2]

Carl Beck will probably have all the production information you seek. Chances are he'll see your post and respond. If not, you can visit the website: http://zhome.com/ and search for the information you require.

Frank

[Walter Moore]

Forgive me:nervous: but if Nissan had only made 16 cars in the 260Z model year with automatic transmissions, those cars would be worth a LOT more than they are.

:tapemouth

[beezee]

I have a 74 260 auto as well,just picked up a nicely warmed up 280 motor with 5 speed , dynoed at the rear wheels @ 160 hp ,has run low 15 second quarter mile ,needing some minor tuning . Also have a r200 lsd 391 gear that when this package is installed would be a big improvement over what i have now.

[bigoak]

Plenty of auto trannies on the 260Z. Not that rare.

[sblake01]

Forgive me:nervous: but if Nissan had only made 16 cars in the 260Z model year with automatic transmissions, those cars would be worth a LOT more than they are.

:tapemouth

Why would that be? They'd still be 260Zs with automatic transmissions.

[bigoak]

Why would that be? They'd still be 260Zs with automatic transmissions.

Come on...don't flat tops and an automatic cancel each other out???