Thread: 283 in a 91 nissan

Tweet

hello my name is jeff and im building a 91 nissan for my weekend toy we have done a lot of work to the truck as for body and stuff it down to about 2100 lbs. im wanting a fater motor the bone stock 150 hp 4 banger ran 11.90 when the truck was still 2900 lbs and im looking to go faster and i know im going to need a motor that has a lot of rpm power up top so i fount a 283 for 20.00 im looking to build it what all should i do to the motor to get it to go faster

so far all i did was clean and cut the crank .10/.10 the motor will need to be bored how far should i go

i know ill need small heads so im looking at maybe some 305 heads

as for the cam, intake and carb im not sure i would like to run 100 shot on it seens it such a high rev motor i thank it would work good

but im open to any ideal to make the motor faster

11.90 in the 1/8 isn't bad for a stock 4 banger.


Don

Hey Jeff, welcome to the board. What trans will you use behind the 283? how much money do you have to do the buildup?

Originally Posted by Itoldyouso

11.90 in the 1/8 isn't bad for a stock 4 banger.


Don

yeah Don, you could see my gears turnin' too

Yeah Richard, I figured you've spent a day or two at the drags.


Don

well it had a muffer and timeing messted with and all the smog pulled

and as far as money i have about 400 rite now and in to weeks ill have 200 more then about a 100 evey two weeks this will not be a over nite thang lol

as for transmissions i want a stick shift as long as it is hydro and not cabel cluch seens it will make it eazyer seens the truck is 5 speed hydro not cabel 4 speed or a 5 speed

o ye the motor will clean up if i go 30 over on th bore

ok i also fount a nother 283 block im my grandads building its is bored like .60 over but evey one is tellin me to bore it to 4.00 is this safe its like .125 over i was like it dont sound safe but a lot of the old guys arounf here say the old 283 blocks like 68 and older was made with really thick walls so you could bore them .125 over and be good is this true

well considering 1967 was the last year fo the 283 there is no 68 and later blocks. yes you can bore then .125 the best blocks are 61-62 and up. i have a 64 283 in my car and its bored .125 and dosnt run hot or anything goofy. and a few mid 60's ones at home ready to be punched .125

Originally Posted by chevymanc1079

ok i also fount a nother 283 block im my grandads building its is bored like .60 over but evey one is tellin me to bore it to 4.00 is this safe its like .125 over i was like it dont sound safe but a lot of the old guys arounf here say the old 283 blocks like 68 and older was made with really thick walls so you could bore them .125 over and be good is this true

It does not sound safe because it is not.
If GM wanted the 283 to 4.0 they would have used that block.
Instead they came out with the 327 that has the 4.0 bore.

Take the block to a machine shop and have the guys sonic check the cylinder walls for thickness. If you can bore it and still have a wall thickness of 0.135", then go for it.

chevy didnt intend to put v8's in novas at 1st either but other people did it alot. besides chevy never intedned for 383's to come around they built one now but you get what i am saying. and if i had 50 grand falling out of my ass id have better parts but i dont so i use what i can and it just happens i like what i use

Originally Posted by gassersrule_196

chevy didnt intend to put v8's in novas at 1st either but other people did it alot. besides chevy never intedned for 383's to come around they built one now but you get what i am saying. and if i had 50 grand falling out of my ass id have better parts but i dont so i use what i can and it just happens i like what i use

Chevy never intended to build a .125 over 283 bore that is why they brought out a whole new block and engine combo.
You all know as a the 327 4.0 bore x 3.25 stroke.
If you did have 50 k falling out of your a-- then I would think about seeing a proctolgist.

The high winding skinny blocks are fun, but I still prefer the big torque numbers coming in at a lower RPM that you get from a long armed stroker engine. Small block chebbies and all the other engines will generally live a lot longer with components designed to build torque at a lower RPM.

Whatever engine combination you choose, it is going to take some suspension work to get the rear end hooked up and not just blow the tires off everytime you stab the throttle. Lots more involved in going fast then just having big horsepower and torque numbers. But hey, I'm a chassis guy, what did you expect to hear??????

never inteded tob ut you know what it happened, alot and they ran good. have you ever built one? or have you just heard the stories?