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Race/Boost 3500 Cylinder Heads
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Race/Boost 3500 Cylinder Heads

Product Information

WOT-Tech Race/Boost 3500 heads are designed with nitrous/turbo/supercharging in mind.  The ports are modified based on extensive flowbench research for the best flow possible.  To compliment the the level of detail put into the port work, only the best valvetrain components are used, including Manley retainers, keepers, race flow intake and race master stainless valves, and PAC 1518 springs.  The valve spring pockets are machined to increase the spring install height to 1.760" for adequate room before coil bind on any of the matching camshafts we have available up to .610" lift.  If you are not running an XFI lobe based cam, you can save some money with the 26986 or LS6 spring options instead (LS6 are good for .510" or less, 26986 are good to over .600" lift)

If you need the lightest valvetrain possible, the titanium Manley retainers are available.  If you are going to run a camshaft over .550" lift, we have a valve job to bias flow to improve performance even more.  Otherwise, please select the under .550" lift valve job.

Stock vs Ported Intake Flow (CFM @ 28" using 3.700" Bore)

Lift (Inches)
Stock Intake
WOT-Tech Intake
0.050
34.2
34.5
0.100
64.9
65.2
0.150
92.6
95.4
0.200
124.4
126.8
0.250
155.3
160.0
0.300
180.0
187.0
0.350
197.3
206.6
0.400
211.8
219.7
0.450
217.7
227.2
0.500
220.4
231.3
0.550
NA
233.9
0.600
NA
235.6

 

Lift (inch)
Stock Exhaust
WOT-Tech Exhaust
0.050
27.5
32.7
0.100
56.0
58.8
0.150
84.2
89.6
0.200
104.8
114.9
0.250
126.7
138.8
0.300
146.8
158.5
0.350
160.1
172.9
0.400
167.6
180.9
0.450
172.6
185.0
0.500
175.5
187.8
0.550
NA
189.5
0.600
NA
191.0

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Price: $1449.99


Product Options:
I will send the parts first
Milling
Retainers
Valve Springs

Product Code: RB3500heads
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