High-Performance 418ci Stroker Engine - Low Buck Brawler

Testing Texas Speed's 418-Cube LS3

Randall D Allen Oct 21, 2009 0 Comment(s)
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The TSP short-block retails for $4,095 and is offered in both 418 and 427ci versions. Long-block versions are available for $7,399, while complete engines-including intake, fuel-system components, and headers-come in at $9,607.74. For enthusiasts looking to make LS7-killing power at a budget price, TSP's offerings look to be right on target.

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Test Configurations
Test No. 1 (Baseline)-Stock L92/LS3 heads; PTM 92mm throttle body; SLP 85mm MAF; stock L76/L92 intake; Comp Cams hydraulic roller camshaft with 242/248-deg duration at 0.050, 0.612/0.615-in lift, 114-deg LSA

Test No. 2-Replaced stock L92/LS3 heads with PRC ported L92/LS3 heads

Test No. 3-Installed Comp Cams hydraulic roller camshaft with 251/259-deg duration at 0.050, 0.660/0.603-in lift, 111-deg LSA; installed TSP 100mm MAF

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Notes: All testing was completed on Sunset Racecraft's DTS model 4000G engine dyno. HP Tuners VCM Suite was used to tune the computer. The timing was locked at 28 degrees, and the knock sensors were removed for testing. VP 101-octane unleaded was utilized in the cell, though TSP says 93-octane would work just as well.


Sunset Racecraft
Lubbock, TX 79411
Texas Speed & Performance
Wolfforth, TX 79382


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