Fox T-Bird/Cougar Forums

Technical => Engine Tech => Topic started by: Lightningbird on December 28, 2009, 10:19:10 PM

Title: 351 Windsor block limitations
Post by: Lightningbird on December 28, 2009, 10:19:10 PM
Does the 351 Windsor have the same block limitations as the 302 of 600hp? I have never heard anything about the 351 limitations. The girdle must increase the blocks capabilities and limitations, but how much?

I am looking at building a 427 or 408 Clevor that makes close to 650 hp NA and wanted to know if this would be a worry for a stock 96+ roller cam 351 block. I really do not have the funds for a Dart or Boss 351 block and would like to stick to the factory block.

Any thoughts............
Title: 351 Windsor block limitations
Post by: dominator on December 28, 2009, 11:47:56 PM
Around 7-750 from what i've heard.
Title: 351 Windsor block limitations
Post by: 5.8fastcat on January 02, 2010, 09:02:58 PM
Mine broke @ 675rear wheel HP  with a single turbo thur an AOD

 It was a 84 model block
Title: 351 Windsor block limitations
Post by: Lightningbird on January 02, 2010, 09:14:07 PM
Quote from: 5.8fastcat;304905
Mine broke @ 675rear wheel HP  with a single turbo thur an AOD

 It was a 84 model block


What did you build after that? Dart? Boss? Man-O'-War?
Title: 351 Windsor block limitations
Post by: Sick88Tbird on January 04, 2010, 04:04:32 PM
What a 351 is capable of handling is mostly in the short block...but if you don't have a good tune on it, that'll kill even the best of short blocks quickly.

675@ the wheels through an AOD has gotta be a solid 800+ horsepower at the crank, and I'm sure a like amount of torque.  Sounds like a good set up to me.
Title: 351 Windsor block limitations
Post by: 5.8fastcat on January 04, 2010, 11:35:02 PM
I went with a Man-O-War 9.5 deck block 4.125 bore.

Just had another  custmer with a S trim on a stock Lightening block  pushing about
 450 RWHP bust the block but could have had a rod break 1st not sure.

 I figure about 25% loss thur an AOD so that would be about 843 @ the crank
Title: 351 Windsor block limitations
Post by: Lightningbird on January 06, 2010, 07:04:40 AM
This Clevor combo would be capable of 750ish NA HP at 6800 RPM. I guess that using an aftermarket block to begin with makes the most sense.