LSX 454 thats 7.4 l of crate engine

[ezakimak]

http://www.gmperformanceparts.com/lsx/index.jsp

the next thing to displace the LS7 from its mantle.

[suntiger1965]

ezakimak said:

http://www.gmperformanceparts.com/lsx/index.jsp

the next thing to displace the LS7 from its mantle.

i was told 8 of these was better than an LS7 engine????

http://www.kinetictfr.com/blog/wp-content/uploads/...

[738 driver]

GM gone back to iron blocks and steel internals............have their titanium/ally bits started failing already?........nasty stuff titanium when it gives in!!

[ROWDYRENAULT]

Guys if you dont recgonise that motor look in the nearest Chevy or GMC truck. The trucks have always had cast iron blocks with those rods and the cast iron crank. Perfect combination for lots of torque no revs over 4500.

[Fran Hall]

The LSX block is the GM performance choice for MAJOR hp.....

I know of one that was being used for a 2300hp GM project car...twin turbo monster...

It is not a replacement for the LS7 or LS9....but an alternative

[jschwartz]

It's a boat anchor at 200 lbs heavier than an LS7 block.
And GM has yet to release the 6 bolt heads for it.
I've had a block for over a year waiting for the heads to be released.
This 454 is just using the standard 4 bolt heads.
I'll have a 620 hp LS3 soon enough.
Jeff S

Edited by jschwartz on Monday 5th January 04:15

[chuntington101]

jschwartz said:

It's a boat anchor at 200 lbs heavier than an LS7 block.
And GM has yet to release the 6 bolt heads for it.
I've had a block for over a year waiting for the heads to be released.
This 454 is just using the standard 4 bolt heads.
I'll have a 620 hp LS3 soon enough.
Jeff S

Edited by jschwartz on Monday 5th January 04:15

i also heard there was some casting issues with the GM LSx block. aslo there is due to be an ally version in 2010 i think.

Jeff have you not concidered using all pro or ET heads?? i believe they have heads that will drop straight on and work. alternaticvely you could go for the Warhawk LSx heads and only use 5 bolts.

i believe also ERL can do a LS2 with 6 bolts per cylinder. and Dart can machine a biliet ally block to whatever you want! lol

the problem, even with the ally Warhawk block, i have heard is sleave length. Nelson racing had alot of problems with the engine for the Mosler. Nelson got longer sleves installed as they where having problems if the pistons i think.

also there is a company, cant remeber the name, that where converting LS2's to around 500inch!!!!

Chris.

[jschwartz]

Chris,
Kind of off topic, but
All Pro and ET have had casting problems. Leaking water, etc. ET may be out of business soon.
Warhawk has many problems, I recenlty built one. Also their bolt pattern in different will not fit LSx block.
The warhawk LS7 heads only flow 310 cfm vs 370 for the actual LS7.
The LS2 with 6 bolts has tabs welded to the block for the extra bolts, not good IMO.
The 500 inch LS2 has 25mm spacers sandwiched to the top of the block, which makes the engine much wider and taller and is not great IMO. BTW their street 500 inch shown at PRI show, made less hp than our 427.
Jeff S

[chuntington101]

jschwartz said:

Chris,
Kind of off topic, but
All Pro and ET have had casting problems. Leaking water, etc. ET may be out of business soon.
Warhawk has many problems, I recenlty built one. Also their bolt pattern in different will not fit LSx block.
The warhawk LS7 heads only flow 310 cfm vs 370 for the actual LS7.
The LS2 with 6 bolts has tabs welded to the block for the extra bolts, not good IMO.
The 500 inch LS2 has 25mm spacers sandwiched to the top of the block, which makes the engine much wider and taller and is not great IMO. BTW their street 500 inch shown at PRI show, made less hp than our 427.
Jeff S

i heard ET where in some trouble on LS1tech. same really.

Bloody hell! didn;y know the Warhawk heads where that bad! also i am sure i heard 5 out of the 6 line up with the LSx block....have i heard wrong??

yeah i have also heard of the Warhawks sleavs dropping. its reported that decking the block gets rid of the issuse. however its not good that its happening in the first place!

Cheers

Chris.