LT4 Vs. LS9

[samckitt]

Originally Posted by thedugan

Jeeze, LS9 short blocks are worth big bucks these days....

https://sdparts.com/i-24507973-chevr...ong-block.html

I hope it's just a typo where the 9 key was sticking.

$100,000! Can't be right.

Pace Performance has it for $13,556.xx
https://paceperformance.com/i-622022...ance-6-2l.html


Why do you only get 6 ignition coils?

[camcojb]

Originally Posted by samckitt

$100,000! Can't be right.

Pace Performance has it for $13,556.xx
https://paceperformance.com/i-622022...ance-6-2l.html


Why do you only get 6 ignition coils?

I'd guess they have the three coils already mounted to the covers in engine assembly. They leave out the far left coil as it covers a valve cover bolt, the others don't. They throw the other two coils in a box. Kinda lazy but I get it lol.

[srode1]

As far as fitment the LT4 high pressure pump will mean you probably need to modify the firewall for clearance, for the pump and the electrical connections. That's the price of direct injection vs port injection. I'm sure you've read the other technical differences and that the LT4 has more torque earlier making for a flatter power curve too which is an advantage in any application IMHO. The wiring on the LT4 isn't really complicated, just plug stuff in and it works and it's gone in lots of cars so there's plenty of information on front runners.

[colorado80439]

Originally Posted by srode1

As far as fitment the LT4 high pressure pump will mean you probably need to modify the firewall for clearance, for the pump and the electrical connections. That's the price of direct injection vs port injection. I'm sure you've read the other technical differences and that the LT4 has more torque earlier making for a flatter power curve too which is an advantage in any application IMHO. The wiring on the LT4 isn't really complicated, just plug stuff in and it works and it's gone in lots of cars so there's plenty of information on front runners.

Thanks for the insight, I've enjoyed watching your build