Stroker size

Paul Kane wrote:

This is still very financially do-able given current pricing for commercially available stroker kit combos: I’m currently working on a very similar OEM 460 stroker crank combo that will use a shelf H-beam rod and can even use a shelf stroker piston (with a single change).  The result will be a nodular iron cast crank stroker kit with H-beam rods and forged pistons for about the same price as an offshore stroker kit, at least as strong as the cast crank offshore stroker kits (if not stronger) and as good a rod ratio as the similarly spec’d offshore stroker kits.

The current-day, cookie-cutter stroker kits have not been updated for about thirty years now, and this new recipe addresses that.  I’ve got a similarly stroked forged crank version in the works, too. My targeted goal is as follows: assuming both the new and old designs are the same displacement and horsepower, the new design will easily out-accelerate the antiquated design down the track.

Details to follow at a later date.

QtrWarrior wrote:My first Big Block, that my Dad built in the mid 80's was similar...
As all these stroker kits didn't exist "Back in the Day"..

Stock block (sonic checked) bored .140" over, 4.500" bore
Stock 460 crank, offset ground to 3.975", 2.375" (?) Big Block Mopar rod journal.
Mopar 440 rods, bushed to 6.770" length.
Made 506" which was HUGE back then...
How the times have changed...

rmcomprandy wrote:
In the late 90's I built a few lower compression, (9/1),  street 494, stroker engines with an offset ground crankshaft to 2.250" rod journal, (4.100" stroke), using aftermarket Pontiac, (pressed pin), rods and .030" overbore replacement 403 Oldsmobile pistons ... these engines used regular C8, C9, D0 heads, which is still very do-able today.

rmcomprandy wrote:

Mark O'Neal wrote:

rmcomprandy wrote:

A 4.3" stroke with a 6.605" rod

Ford did it....for about a month. So, it was thing, but really not a thing.

You might run across a crank if you're lucky.

Do your homework Mark ...
"Ford Racing Performance Parts" used that combination of crankshaft journal size / connecting rod for about 10 years in their big block crate motors.

supervel45 wrote:OP: What Block are you going to use?

Nice Top End by the way.

Mark O'Neal wrote:

rmcomprandy wrote:

Mark O'Neal wrote:

rmcomprandy wrote:

A 4.3" stroke with a 6.605" rod

Ford did it....for about a month. So, it was thing, but really not a thing.

You might run across a crank if you're lucky.

Do your homework Mark ...
"Ford Racing Performance Parts" used that combination of crankshaft journal size / connecting rod for about 10 years in their big block crate motors.

It was sarcasm. I didn't mean to trigger you.

dfree383 wrote:The pot calling the kettle black!!!!

nedceifus wrote:

supervel45 wrote:OP: What Block are you going to use?

Nice Top End by the way.

DIVE block. Ended up not stroking it. Put a SCJ piston in it, crossing my fingers on the Eagle I beams & sending it.

rmcomprandy wrote:

Mark O'Neal wrote:

rmcomprandy wrote:

Mark O'Neal wrote:

rmcomprandy wrote:

A 4.3" stroke with a 6.605" rod

Ford did it....for about a month. So, it was thing, but really not a thing.

You might run across a crank if you're lucky.

Do your homework Mark ...
"Ford Racing Performance Parts" used that combination of crankshaft journal size / connecting rod for about 10 years in their big block crate motors.

It was sarcasm. I didn't mean to trigger you.

I didn't recognize it as sarcasm ... I thought you were having a senior moment brain fart. LOL

supervel45 wrote:

nedceifus wrote:

supervel45 wrote:OP: What Block are you going to use?

Nice Top End by the way.

DIVE block. Ended up not stroking it. Put a SCJ piston in it, crossing my fingers on the Eagle I beams & sending it.

Cool. I know you said .700 lift solid roller on the first page. Did you have, or get the cam bought, just curious what you ended up with?

Should be a fun ride.

nedceifus wrote:What stroker sizes are better for different applications? I’m just getting my 460 together but really need to upgrade to a forged piston, I’m going to put some NOS to it next summer. Seems like if I’m going to invest in a good set of pistons I may as well just buy a stroker rotating assembly. This is going in a 64 Ford. Street/Strip, heavy on the strip. Victor, 1000cfm 4150, 700 lift solid roller, SCJ heads, pump gas, 200 shot.  I want to be able to beat the piss out if it.

Slowride wrote:

nedceifus wrote:What stroker sizes are better for different applications? I’m just getting my 460 together but really need to upgrade to a forged piston, I’m going to put some NOS to it next summer. Seems like if I’m going to invest in a good set of pistons I may as well just buy a stroker rotating assembly. This is going in a 64 Ford. Street/Strip, heavy on the strip. Victor, 1000cfm 4150, 700 lift solid roller, SCJ heads, pump gas, 200 shot.  I want to be able to beat the piss out if it.

You have a near identical build as mine and something may be problematic for you. Hopefully you find the answer I didn't in running a .700 lift cam with the SCJ heads. Flow would max at .650 and springs for a SR will coil bind there as well. If you've found the magic bullet, post it up or IM me as Scotty will be (hopefully) grinding my cam soon.

Paul Kane wrote:

Doxnoogle wrote:

stanger68 wrote:…Yes I would sell the (240) rods….

…Two of the companies that made pistons for this application are not even in business anymore, and the other two dont have them in the catalog…. Paying $800-900 for custom pistons, on top of grinding the crank pretty well sinks the boat.

This is still very financially do-able given current pricing for commercially available stroker kit combos: I’m currently working on a very similar OEM 460 stroker crank combo that will use a shelf H-beam rod and can even use a shelf stroker piston (with a single change).  The result will be a nodular iron cast crank stroker kit with H-beam rods and forged pistons for about the same price as an offshore stroker kit, at least as strong as the cast crank offshore stroker kits (if not stronger) and as good a rod ratio as the similarly spec’d offshore stroker kits.

The current-day, cookie-cutter stroker kits have not been updated for about thirty years now, and this new recipe addresses that.  I’ve got a similarly stroked forged crank version in the works, too. My targeted goal is as follows: assuming both the new and old designs are the same displacement and horsepower, the new design will easily out-accelerate the antiquated design down the track.

Details to follow at a later date.

dfree383 wrote:Bigger the stroke the more torque and power it will make.

supervel45 wrote:

Paul Kane wrote:...I’m currently working on an...OEM 460 stroker crank combo that will use a shelf H-beam rod and can even use a shelf stroker piston (with a single change).  The result will be a nodular iron cast crank stroker kit with H-beam rods and forged pistons for about the same price as an offshore stroker kit, at least as strong as the cast crank offshore stroker kits (if not stronger) and as good a rod ratio as the similarly spec’d offshore stroker kits.  I’ve got a similarly stroked forged crank version in the works, too.

The current-day, cookie-cutter stroker kits have not been updated for about thirty years now, and this new recipe addresses that.  My targeted goal is as follows: assuming both the new and old designs are the same displacement and horsepower, the new design will easily out-accelerate the antiquated design down the track.

Details to follow at a later date.

^Any progress on this? Are you going to offer anything with the 429 Forged Truck Cranks new with them?

Are you planning any Low Compression Options for the Boosted guy's?

• The cast stroker crank is finished and I have the rod set for it as well, just need to order the piston set.
  
• The forged stroker crank is currently at the crank grinder.  When I get it back I will order the rods and the pistons for that one.
  
• (PS: The cast crank version is evolving into a "proof of concept" deal; the forged version will be the kit I think people will want.)
  

supervel45 wrote:Those Forged 429 Steel Truck cranks are pretty rare, I guess that is a big ask to make it worth while to offer them in mass kit form.