Ahizzy89

Hey guys Im wanting to take my 350 and turn it into a 383, can anyone tell me what kind of crank and pistons and piston rods I need to do this? Thanks

jmm98LS1

iTrader: (28)

It sounds like you're not familiar enough to piece together everything for a stroker, so the easiest thing to do is buy an entire rotating assembly from a manufacturer like Scat or Eagle. It will come with your crank, rods, pistons, bearings, rings, balancer and flexplate/flywheel......pretty much everything you need for the shortblock minus the cam. Then you'll need heads/cam/intake to compliment the extra displacement. Best thing to do first is set yourself a budget and goals for what you want out of the motor.

ZONES89RS

iTrader: (25)

Yep, you didnt even state the year block so you really are in the dark.

Ahizzy89

Its an 88 Trans Am and I'd Like to keep it around $3,500

ZONES89RS

iTrader: (25)

In that case if it is original motor, it is a 1 piece rear main seal, better than the old blocks. A kit form scat is around 1700$. Fullly forged, if you are not exceeding 500 HP then use the cast crank kit, 850$ or so i believe.

Ahizzy89

yeah im looking for around 420-450hp, thanks for your help

ZONES89RS

iTrader: (25)

No problem, i say scat due to their strength being just as good as or better than eagle at a better price.

bluebeast

iTrader: (1)

i think the best bet these days would be to buy a ZZ383 short block or long block with a warranty and enjoy! comes with 430hp and has alot left in it if you wanted to upgrade the cam later on

MrOverkill

iTrader: (1)

If all you want is 450hp save some money and piece it together for DIRT! ANY off the shelf 350 piston combined with a 3.75" (stock 400) stroke crankshaft, and a 5.565" (stock 400) length rod will give you a 383 on a budget. Its not a high rpm combo but you could spin it 6500 and make all the power your wanting. There are many kits out there for good money but if you want to do it on the cheap there is the formula for it above.....

If it was for me I would do an internally balanced 383 it will cost a few bucks more but its money well spent.

camarojunky74

iTrader: (14)

i would recommend a scat rotating assebly, cast crank i beam rods and forged pistons, you pick the comp ratio you wanna run, get yourself a good roller cam, something like 550 lift with high 250's duration and any lsa you want, you should be sitting at where you wanna be easily.

or just use your stock crank get some rods and pistons, ball hone your cylinders and make a 377, thats always an option., you need to tell us the heads your running and the size of the comb chamber.,

and yes the zz4 383 is a great platform to start your build,

ZONES89RS

iTrader: (25)

F it, get a world products 454 small block.....I wish.

RAGENZ28

iTrader: (5)

<< scat crank 600 hp n/a with 300 shot for 3 years without issues.

Get a 383 kit with 6" rods with arp 2000 bolts or L19 bolts if it isnlt much more and makes sure the pistons are 2618 material, they'll know what it means.

dvz28

You may check around your local track for someone selling out. I sold my old 377ci. for $3000.00 just because BIG DUMMY ME wanted a 434ci. that engine went turn key.