Category: Accessories
Price: $1234
Location (State): MN
Item Condition: Brand New
Shipping Information: Item Can be Shipped
LS Engine?: Fits LS Engine

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to the top with lost of new parts for sale.

 

Do you have any more details on the heads? What size valves, flow rates, chamber size, etc

 

Cylinder Head: G III LS1 11° Application: Street / Race
Port Volume: 225cc Chamber Volume: 58cc
Test Bore: 4.000" Test Pressure: 28.00" Water
Intake Valve: 2.080" Exhaust Valve: 1.570"

Valve Lift Intake Exhaust Valve Lift
.100" 71 57 .100"
.200" 153 114 .200"
.300" 208 164 .300"
.400" 265 204 .400"
.500" 308 224 .500"
.550" 320 228 .550"
.600" 328 231 .600"
.650" 332 234 .650"
.700" 320 236 .700"

Exhaust to Intake Flow Ratio 73%

The springs are a 98445 part number from Competition Products,
The retainers are Manley ICD 23688,
springs are 155# on the seat at 1.750 installed. The coil bind was about 1.080

These heads went 10.110 @ 133.49, 1.455 60' 1968 Camaro, pump gas LS stroker 404cid 3300-3400# 23X/240X .65x/.65x cam (nothing crazy)
th400, 3.89 gear, drag radial, footbrake

Et calculators put that at over 600whp (take it for whats it worth)

 

Are the heads an aftermarket casting or GM casting. Pm me please.

 

What bore is the block interested in rods and pistons

 

aftermarket thick deck heads. same casting has been in the 7's with 4 bolts these are the early versions of the mast black labels heads. The designer of the these is the same person in charge or mast's head program.

 

3.905 but im not interested in taking the short block apart. I will keep it before that happens.

 

All pm replied to, lots of tire kickers

 

bump/ pm's all pm's replied

 

bumpty bump

 

What type off numbers do these heads produce on a 408 what do they flow ect pm thanks bud

 

post 26 has all the info you are looking for

 

All PMS replied to

 

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Do you still have the shortblock for sale?

 

Yes I do

 

all pm replied