I'm considering a 402 stroker to make out of a spare 350 block but I had a question for the seasoned builders here. will a 4"stroke w/a 6" rod clear the bottom side of the block? I know that some of the SBC super strokers (454 with the 4.125" stroke) require notching the block for clearance.

 

Think about it, if you have to clearance the block for a 3.75" stroke, would you have to clear for a 4.00" stroke? But, sure it's possible. Have fun finding pistons, however. You would need a ~1" compression height.

 

flat lander racing sells the stroker kit for $1700 with forged crank, pistons, and 6" H-beam rods. will I need a taller deck block? this is a late model 1 piece seal block.

 

be careful, i do not see a piston that has a 350 bore, 6.00" stroke, and a 1.00" C/H listed anywhere on their site.

JE does have pistons that carry a 1.00" C/H, however, they are for a 6.250" rod.

 

it's not a slap together, it's their stroker kit http://www.flatlanderracing.com/strokerchev-350407.html
all these rods listed say 6"
the one I was looking to do is the SKC4073 one with the forged 6" H-beam rods and forged pistons. Their website is a little unclear for piston selection, they say"JE, SRP, Wiseco, or Ross pistons" so I may just go with SKC4074 that has Venolia forged pistons for the same price. At least I'm sure on the pistons I'll be getting.

 

Show me a piston that is for a 350's bore, a 4.00" stroke, and has a 1.00" compression height.

I realize it's a stroker kit. But think, if you will, what is in a stroker kit? A crank, rods, and PISTONS. They don't specual make pistons JUST for their kit. They take pistons that are normally offered, mix it with some rods and a crank and sell it as a kit. With that being said, show me the pistons.

And regarding the pistons, thats great that you know the company that makes them. Now whats the compression height? Are they flat top? Valve reliefs? Domed? Dished?

 

With a 4" stroker, whether it's a kit or not, you're going to have your hands full trying to clearance everything.
Then when you've got the rotating assy clearanced in the block, you'll have to get a small base circle cam and a new oil pan to clear the larger stroke.
It isn't that it can't be done, but it's a bigger job than a 383 stroker.
A taller deck block could be the solution to all those issues. They not only come with a higher deck, but the cam is raised up for added clearance also, and the oil pan rails are spread apart.

 

Aftermarket blocks cover this issue.

On a sidenote, streetiron, clear some room in your pm inbox man!

Or, do you have a messenger service?

 

Sounds to me like you need to contact flatlanderracing.com and find out exactly what's in that kit, and what it takes to install it.

It will absolutely not fit a stock block without grinding.

I can guarantee you that at best, there'll be lots of grinding involved, and maybe some block fill; and a small base circle cam as well. At worst, it won't go into a stock 350 block at all, and you'll have to get an aftermarket one to use the kit.

 

thats what I wanted to know, I'll contact them ask them about the details but if an aftermarket block is required defeats the purpose of this. The next down a a 3.8" stroker 388ci (their 396 is $2600 so it's not an option), its the same price and might be worth going for it instead because of less machining. the cam I've got is a small base circle LT1 cam (block is a late model 350 block).

stekman, as I said flatlander was a little vague on their descriptions but they didn't make any notes of aftermarket blocks and such which they do for other stroker kits and their piston inventory is huge. I'm probably going to abadon the 4" stroke and go with a 3.8" stroker crank instead because any excess block machine and so forth isn't worth it, and if I was going after market block I'd do a 454 based off a motown block lol.