PhoenixFB350

I've seen a few rotating assemblies for sale that are relatively reasonably priced. I wanted to do a 400 block stroker but the blocks are hard to find and expensive when I can find them. 350 based blocks are much much cheaper and this is the biggest you can get out of them. Anyways, if anyone has a 396 SBC stroker, were you able to use a stock block? what clearance issues did you encounter? I imagine the issues would be the same as those encountered by people stroking 400s to 427s. And most importantly, what kinds of power, torque, RPM, and streetability did you encounter!?

TraviZ

iTrader: (2)

what do u mean clearance issues? you mean stroking a 350 to 396? the clearance would be the same. unless your talking internally?

TunedPort 335

I know of a couple 4th gen guys who have built them. Yes you can use the stock block, as long as you don't grind away too much metal for the crank & rod clearance (these are all LT1 blocks though).

I am not sure if a GEN 1 sbc has the same amount of clearance inside needed for grinding.

PhoenixFB350

I am talking internally. Flatlander racing has kits and doesn't mention anything about needing a special block (like the big inch 450+ ci 400 based blocks). I'm guessing its a 4.060" x 4.000" very VERY close to the bore x stroke of the 36 BBC actually. all these kits come with 6" rods and forged bottom ends. Probably need a small base circle cam. anyways, Tunedport 335, could you ask your LT1 friends what they've done and what kind of power they make

TunedPort 335

http://96silverz.cz28.com/

It makes 840 flywheel HP on pump gas, and 925hp on 100 octane. The less radical N/A ones normally make around 500hp given the right combination of parts.

Check out the message boards on www.camaroz28.com , theres quite a few guys who own 396+ci stroker LT1's there.

PhoenixFB350

well, I was a little off on my bore x stroke for the 396. its a 4.030 x 3.875, so a little less stroke, which is a bit better than a square motor. the 4" stroker is a 407. that Z28 is insane.

conlinj

iTrader: (3)

there was that car in gmhightechperformance...

PhoenixFB350

what kind of power did it make? didn't they just keep that TPI garbage on it???

conlinj

iTrader: (3)

it could have made more power but the were trying to keep it emissions legal, so they went with the superram intake, it probably could have made more power with a miniram or stealth ram. I believe it ran low 12's maybe a high 11. Tpi is not garbage if you tune it right

PhoenixFB350

I should be able to run low 12s with an HSR on my engine at the moment. ran a 12.7@108 with TPI on a built 350. then I blew something, cause its been acting up all winter :-/
high 11s isn't bad for a completely emissions legal build. I bet 10s are in order for a non-emissions build! that'd be nuts

conlinj

iTrader: (3)

o yeah get some long tubes and a miniram 4" mufflex system it should be there

PhoenixFB350

I've got long tubes and 2.5" true duals. miniram is insanely expensive, i'd rather get a modified LT1 intake

conlinj

iTrader: (3)

yeah it is expensive, i just don't like the the way u have to hack up a LT1 manifold to make it work though. The stealth ram is sweet as well if i were to do it that's how i would go, but i still think the miniram will out flow the stealth ram

PhoenixFB350

from all I've read and seen, the HSR is a great street manifold, better than the LT1 intake manifold (which is prone to a number of problems, although usually minor, they can add up). I can't justify the cost of the mini-ram for a few more CFM or air and more rpm... 6000-6200 rpm is about where I'd like to shift this thing.

Air_Adam

396 BBC is 4.09" x 3.76"

PhoenixFB350

talking about a 396 SBC stroker... it's 4.030 x 3.875

Air_Adam

I know... but someone asked what the BxS of the BBC 396 was.