Jason 98 TA

We've finally got the opportunity to get the all new PRC CNC Ported LS-7 cylinder head installed on our dyno test LSx 454 engine! The engine was dyno tested with Texas Speed 254/260 camshaft, LS7 intake, Texas Speed all new 100mm MAF & 1 7/8" dyno headers!

Engine Dyno Video:
https://www.texasquadperformance.com/lsx454.mpg

Testing was done with both cylinder heads using the same valves & set to 70cc chambers.

Dyno test with stock GM cnc ported LS7 cylinder heads:




Dyno test with Precision Race Components CNC Ported LS7 Cylinder Heads:



Pic of the 454 on the engine dyno




30 Peak Horsepower Gains & 16 lb ft of torque!!

c5_from_jc

Is this an SAE number?

Where are all the accessories (i.e. alternator, AC,....)?

Auto X 434

you mentioned the duration what was the lift on those cams? and whats the bore and stroke of that motor? im guessing ur running race fuel what is the compression ratio?

Chris

Jason 98 TA

They are corrected numbers. Engine dyno tests dont typically uses accessories...

Gains show over 25hp!! Not bad from removing the stock CNC LS7 heads & replacing them with the ported version!

Jason 98 TA

Backorder is down to under 2 weeks guys & we're offering exchange with stock ls7 casting customers for $1000!!!

LTC Z06

Wow!