Boring & Stroking 5.3l To 6.6l

**02BURBAN** · 07-25-2007, 09:18 AM

I NEED TO KNOW IF IT POSIBLE TO BORE THE 5.3L FROM 3.8 TO 4.0 AND PUT A 4.0" CRANK TO STROKE MY 323 TO 400... THE SUBURBAN IS GO IN IS 4X4 AND IS VERY HEAVY AND NEED A LOT MORE POWER THAN 323 C.I....

**SStriker** · 07-25-2007, 09:23 AM

I dont think its possible. Find a 6.0l Iron Block and Bore and stroke that.

PS. STOP YELLING

**99transamC/FIA** · 07-25-2007, 09:33 AM

3.905 max bore on 5.3L w/4.00 crank 383 cuin

**02BURBAN** · 07-25-2007, 09:50 AM

Would A 383 C.i. Increase The Horse Power And Tq. Levels...
I Have Descreened The Air Flow Sensor,
Added A Daiblo Programmer, Headers, 160' Thermostat, K&n Filter With A Air Aid Induction, And A T.b. Spacer..

I Guest The Next Thing Is A Cam Or Stroking Out The Block...

**sroach20** · 07-25-2007, 11:52 AM

just slap in a cam, get rid of the diablo, stall it, and get a dyno tune. stick something like a 224 cam in and you can have some nice power. just make sure you get rid of that piece of crap g80 in your rear end before you start launching.

**02BURBAN** · 07-26-2007, 04:58 AM

Thanks For The Information On The Cam And 6.0 Block...
What Is The G80.
What Works Better Than The Diablo, May Be "hp Tuners"...
I Was Very Disapointed When I Got The Results Of My Burban From The Dyno Shop...

230 H.p.
282 Lbs/tq
At The Rear Wheel... I Guess You Loss A Lot The The Transfer Case But I Need To Build Up A Lot More Power...

**sroach20** · 07-26-2007, 07:01 AM

the g80 is the posi unit in the rear end. the g stands for grenade. you can get hptuners and do it yourself, or get a dyno tune.

**02BURBAN** · 07-26-2007, 07:08 AM

I Also Need To Know If Stell Blocks Have Any Liners OR Sleeves Like The Aluminum Block Do....

I Know All Ls-based Engines Have 4.4" Spacing And Sleeves Are Sold The Can Be Bored Out To 4.250"... I Have Never Opened Up An Ls- Engine... I Have A Long Block 5.3l For A Spare Eng. And I Would Like To Work On This One...
You know you are right about the diablo, the frist day I had the turner in stalled I called daiblo and asked if that was all i was going to get out of the tuner...

**danziger** · 07-27-2007, 11:16 AM

Why not just put a Maggie blower on it and call it a day? The 5.3 is a good engine (I have one in my wife's 2004 Z71), but I wouldn't build it when getting a 6.0 is easier and probably cheaper.