SBC 305 240sx build!

Post by **greengt2nv** » Mon May 18, 2009 9:56 am

Well im picking up a SBC 305 on wedensday for $100 runs perfect. I do need some help on what i should do for a drive shaft... and im swapping out the Hicas with a non hicas rear end. if anyone has any tips for me please feel free. no negative comments!!!

Modified by greengt2nv at 1:05 PM 5/18/2009

Post by **fun240** » Mon May 18, 2009 10:04 am

NEGATIVE COMMENT!!!!!!!!!!!!!!!!!!!

Make a build thread!

And why this swap?

Post by **greengt2nv** » Mon May 18, 2009 10:07 am

Because no one else has done one and I am not a ford fan...

Post by **the_momo** » Mon May 18, 2009 6:52 pm

i did one a loooonnnggg time ago, cept it was a 350, sorry to burst your bubble.

it is rather easy tho, not a whole lot of work involved. just make a pan to fit and work from there.

and wiring is non existant. its like 3 wires. seriously.

good luck tho! u doing a 5 speed or auto?

Post by **greengt2nv** » Tue May 19, 2009 9:24 am

im going with a muncey 4 speed manual.

Post by **greengt2nv** » Tue May 19, 2009 9:25 am

the_momo what did you have to do about the drive shaft? and fuel? can i use the stock fuel pump and just get a regulator?

Post by **bleakdragonmage** » Wed May 20, 2009 7:26 am

you will have to get a custom driveshaft made with a 240sx diff flange and a muncie yolk...or get the diff flange changed to a GM flange and have the driveshaft shortened/balanced...

as for the fuel..yes you can use the stock electric pump, but you will have to run a carb FPR...basicly something like this http://www.aeromotiveinc.com/products.php?prod=17

either that or you can unplug the stock fuel pump and put a holly red/blue on the line and it will pull fuel through the stock unplugged pump

Im doing a 350 in my Z31 right now which is why i know some of this stuff lol. Im almost done..just need to finish welding the mounts, and have the driveshaft made.

Post by **greengt2nv** » Wed May 20, 2009 9:28 am

Edelbrock performer intake my friend hooked me up with for free! gotta love friends that work at junk yards!!!

Post by **maik21** » Wed May 20, 2009 3:50 pm

305 chevy is powerful as 5.0 HO ford?

Post by **the_momo** » Wed May 20, 2009 6:17 pm

Post by **greengt2nv** » Wed May 20, 2009 6:31 pm

standard carbureted 305-cube stock. In baseline form, the 305 was no powerhouse, making 221 hp at 4,800 rpm.

Post by **greengt2nv** » Wed May 20, 2009 7:01 pm

this is the same motor i have with a few bolt ons... YUMMY!

http://www.popularhotrodding.c....html

Post by **540sx** » Thu May 28, 2009 1:56 pm

I am assuming you mean no one has done a 305 because not including my turbocharged 327 there have been several sbc's dropped into a 240sx.327, 350,383 have definitely all been done.

good luck. I had inland empire driveshaft build me an aluminum onefor my build. along with u joints it was 450 for a 3.5" driveshaft.

as far as using the stock fuel pump , i don't think it will support the horsepower and torque you can get from that engine with some mods.at least get a walboro 255lph . they are cheap under $150.

that is my opinion anyways.

good luck.

Post by **Stev0n** » Thu May 28, 2009 2:03 pm

you should check out http://www.silviav8.com

there have to be at least 20 or more people on there with 305 & 350 - 240's.As well as a lot of ls1 240's.

just a warning... 305's don't like hp. you'll find yourself wanting to drop a 350 ot bigger in later on.

Post by **greengt2nv** » Fri May 29, 2009 9:37 am

thats part of my plan is to run the 305 for awhile and the mounts are the same for a 350 so all i would really have to do is drop it right in.

one more question for you guys that have done this. what do i do about where the drive shaft meets the rear diff? i wish someone had a write up would make things so much easier.

Post by **540sx** » Mon Jun 01, 2009 9:34 pm

I think on mine they used a pathfinder piece(ujoint) that bolted to the flange on the input pinion. I had to redrill my flange as I have the q45 diff with a larger bolt pattern . custom driveshaft , you measure the length let them know what it is mounting to on either end and they build it. they will also ship if you are not local for pickup

Inland Empire driveshaft

a 3" should be plenty .

my 3.5" is rated at 750hp

Post by **greengt2nv** » Tue Jun 02, 2009 9:34 pm

well there is a local shop that makes them so i will prolly go through them. im on broke as hell budget thats why i am glad i have my friends to hook me up with all my parts for next to nothing. I am also buying a brand new crane cam from a friend for $40 all i need is gaskets, transmission, fuel pressure regulator, and drive shaft and should be up and running.

Post by **540sx** » Wed Jun 03, 2009 5:51 am

If you can place the tailhousing of the new trans with in an inch or so of the original location you could probably just have the yoke changed on your current driveshaft.

Post by **greengt2nv** » Thu Jun 04, 2009 5:00 pm

i was told with the amount of hp i will be running the stock drive shaft with break like a pencil.

Post by **540sx** » Thu Jun 04, 2009 9:50 pm

you complained about budget and the word here was that the 305 does not produce too much hp. I personally go for overkill to ease my mind in ways like this. again my first suggestion was a 3" aluminum driveshaft.

mine cost 450 for a 3.5"

regarding fuel I am using this fpr with the 3-20psi spring(base pressure adjustment) , easily adjusted.

http://www.aeromotiveinc.com/products.php?prod=15

i also am running boost so the boost reference is necessary. if you are planning on running boost later this or the a1000 by pass are good options. with out boost you just leave the boost reference port open to atmospheric pressure.

Modified by 450SX! at 12:55 AM 6/5/2009
Modified by 450SX! at 2:22 AM 6/16/2009

Post by **greengt2nv** » Thu Jun 11, 2009 10:38 pm

what do i do with the break booster hoses?

Post by **540sx** » Mon Jun 15, 2009 11:04 pm

you need to run it to the intake manifold. make sure and put the check valve in the line. the brake booster hose is 3/8" if I remember right. you want to put the check valve as close to the vacuum source as possible.

Modified by 450SX! at 2:17 AM 6/16/2009

Post by **1KleenS13** » Tue Jul 21, 2009 3:11 pm

The 305 is one of the weakest engines ever produced . Just spend the extra money and put a 350 in it.

SBC 305 240sx build!

SBC 305 240sx build!

Re: SBC 305 240sx build! (greengt2nv)

Re: SBC 305 240sx build! (fukin240)

Re: SBC 305 240sx build! (greengt2nv)

Re: SBC 305 240sx build! (the_momo)

Re: SBC 305 240sx build! (the_momo)

Re: SBC 305 240sx build! (greengt2nv)

Re: SBC 305 240sx build! (bleakdragonmage)

Re: (maik21)

Re: (maik21)

Re: (greengt2nv)

Re: SBC 305 240sx build! (greengt2nv)

FN-QR

Re: FN-QR (Stev0n)

Re: FN-QR (greengt2nv)

Re: FN-QR (450SX!)

Re: FN-QR (greengt2nv)

Re: FN-QR (450SX!)

Re: FN-QR (greengt2nv)

Re: FN-QR (450SX!)

Re: FN-QR (greengt2nv)

Re: FN-QR (450SX!)

Nissan Forums

Infiniti Forums

Datsun Forums

Technical Forums

Classifieds / Marketplace

Nissan Motorsports

General Forums