saw a crank with hat stroke for the ls motor just curious what that would be used for im guessn high revvin fun

 

do you have a link? that would make a nasty little 304!

 

lol i was just wanderin on the ls sites
so what the hell would u want a 304 4

 

if i was guessing i would think it would be for a racing class with cubic inch rules or maybe weight/ci rules .it would be around a 340-341 with a 4.125 bore. maybe sprint cars or something ?

 

so high rpms it said it had 1.88 journals tho i cant find rods for that lol

 

Daytona Prototype LS engines are limited to basically stock 5.7 L bores and 5.0L total displacement. That makes a 3.185 stroke just about right. At their 7100 rpm rules limit, that is a fairly lazy mean piston speed of 3770 ft/min.

I suggest that these cars are definitely a fun drive! They race for 24 hours at Daytona later in January.

When Cadillac first went racing with the CTS they used a 5.7L version of the LS7 engine. The 3.185 stroke would also have worked here with a 4.165/4.175 bore. The eventually had to revert to the LS6 engine. In either case above, a used 3.185 crank might have MANY rpm cycles on it. Caveat emptor.

 

so these things can rev more than 7100 safely

 

where can i find rods with 1.88 journals though

 

Your stock crank can rev to more that 7100 safely. As for the rods, some companies like callies manley, oliver so others might stock what you need, but im guessing if you use a stroke that short you will have to order a custom length rod and custom piston.

 

im lookin at a 3.500 stroke ls1 bore on a 5.3 block and lots of spray

 

You stock crank will be fine for that but you will need forged pistons and rods. Since its out why not just build a 5.7 or 6.0 for it?

 

i have a 5.3 block already

 

so how high could this thing rev up with a 3.185 crank??????
wat all is needed to run that high????
solid lifters---------good or bad

 

People have been past 7500 with hyd lifters. In the high RPM's you really have to worry about the oil system running the pan dry. Thats where and accusump comes in. Just keep in mind since this is in a truck you loose some low end grunt.

 

1.88 rod Journal is what they use in NHRA PRO STOCK .They rev to 10500rpm.

 

Well I Have An V6 Fbody That I Locked The Motor Up In
Accusump?/

 

Well Anyone Know Roughly How Many Cubes A 3.5 Stroke And A 3.905 Bore Would Be With 57cc Heads

 

335-5.4l

 

nice i want to build that for my truck and shift at 6500 probly with a 200+ shot

 

Displacement = BORE x BORE X STROKE X .7854 X number of cylinders.

That will work for any size combustion chambers. (57 cc or otherwise)