[vetteoz]

What type of 4.000 crank/rods would you recommend for a L98?

Intended Hp /rpm of the build and your budget?
You can pay $600 or $2500 for a 4.00" crank depending on your requirements

 

[vetteoz]

Ok so with a longer stroke what size connecting rods will I be needing and or pushrods? ( i think)

What block are you planning on using?
3.75 (383) is most common stoker ; minimal clearance work of block needed and stroker parts common and cheap .
3.875" (396 ) requires more work
Even the 400 SBC only had a 3.75" stroke.
Plenty of online info if you use Google
http://speedtalk.com/forum/viewtopic.php?f=1&t=14304
http://speedtalk.com/forum/viewtopic.php?f=1&t=26164
http://www.hotrodders.com/forum/sbc-3-75-vs-3-85-vs-4-00-stroke-187323.html

 

[vetteoz]

Can the stock heads and injectors handle the job?

If you are planning a big cube SBC with stock heads heading you are thinking in the wrong direction.
Better to build a 3.750 stroke 383.

At 406+ cubes ( 4.00" stroke ) you are going to want some big heads , prob 200 cc or better if you want it to see it's potential.
And you will need larger injector and prob a better intake than a TPI so it can breath.The TPI was designed for a 305

If you read the write ups , you will see a 4" bore x 4" stroke SBC is not a recommended build because of the amount of work
and cost involved vs easier/ cheaper ways of making the same Hp
is usual have the bore larger than the stroke if you want the engine to rev; 400 SBC was 4.125 bore x 3.750 stroke

 

[vetteoz]

yea im lookin to use a 3.75 crank for a 383 build im just trying to find a kit off summitracing

Whats your budget and expected use (Hp / revs). Do you need forged parts?

Stroker kits start from $770 with a cast steel crank ,I beam rods and Hyper pistons
http://www.summitracing.com/parts/sca-1-91050/overview/make/chevrolet

if you want forged pistons and crank then you are looking at $1000+
http://www.summitracing.com/parts/sca-1-91105/overview/make/chevrolet