08/30/2026
We are a huge fan of the late 4th gen fbodies. They are easily one of the best late model performance cars out there.
This one came to us with low oil pressure. We drained the oil and cut the filter to find that the oil was degraded with fuel causing bearing failure. This can happen for many reasons, like a stuck injector, bad rings or incorrect tuning.
We tore down this 408 stroker and sent the short block to Central Texas Motorsports for a rebuild. John also took care of the LS3 heads with a valve job and resurfacing which brought us to 12.25CR.
We went with the Texas Speed Texas Giant camshaft and dual valve springs, Johnson drop in lifters, CHE Precision trunnions, Melling oil pump, Katech C5R timing chain, and a new Monster twin disc and slave cylinder from Tick Performance.
The iron 408 which was previously installed didnt have the holes drilled in for the alternator mount, so we went ahead and drilled and tapped the block. With only 1 bolt supporting it, the bracket was flexing causing the belt to shred.
After the initial engine break-in, we took it over to Phoenix Performance Calibration and Jeremy got it dialed in great putting down 517whp! Thats pretty good considering it has a stock maf, paper filter and on pump gas in 104° heat!
The customer is stoked to be back on the road!
