What casting number?
Thread Starter
Staging Lane
Joined: Dec 2010
Posts: 71
Likes: 0
What casting number? Found a set of heads on craigslist off a 99 corvette. What casting number would these be? And would they work on an lq4? Might be too late because my intake is going to be here tomorrow for my 317 heads, and they more than likely dont have the same ports. Also has the cam too if any of you guys know anything about this. Might could use some of this stuff and the guy doesn't know off the top of his head any of this info.
Casting Number 806 or 933
LS1 (Perimeter Bolt)
97-98 5.7L Passenger Car and Corvette
Material: Aluminum
Combustion Chamber Volume: 66.67cc
Intake Port Volume: 200cc
Exhaust Port Volume: 70cc
Intake Valve Diameter: 2.00 inches
Exhaust Valve Diameter: 1.55 inches
Casting Number 853 or 241
LS1 (Center Bolt)
99-00 5.7L Passenger Car and Corvette (853)
01+ 5.7L Passenger Car and Corvette (241)
Material: Aluminum
Combustion Chamber Volume: 66.67cc
Intake Port Volume: 200cc
Exhaust Port Volume: 70cc
Intake Valve Diameter: 2.00 inches
Exhaust Valve Diameter: 1.55 inches
Casting Number 243
LS6
01+ 5.7L Corvette
Material: Aluminum
Combustion Chamber Volume: 64.45cc
Intake Port Volume: 210cc
Exhaust Port Volume: 75cc
Intake Valve Diameter: 2.00 inches
Exhaust Valve Diameter: 1.55 inches
Thats from a search lol.Yes there the same ports but Id say the 317s with a nice mill would flow better than heads off a 99 vette. Being that ive read that the 317s flow similar to ls6 heads but the low compression sucks. But being that there going on a lq4 (if stock pistons) the compression is still ganna be low even with a mill. Im sure someone with more input will chim in
LS1 (Perimeter Bolt)
97-98 5.7L Passenger Car and Corvette
Material: Aluminum
Combustion Chamber Volume: 66.67cc
Intake Port Volume: 200cc
Exhaust Port Volume: 70cc
Intake Valve Diameter: 2.00 inches
Exhaust Valve Diameter: 1.55 inches
Casting Number 853 or 241
LS1 (Center Bolt)
99-00 5.7L Passenger Car and Corvette (853)
01+ 5.7L Passenger Car and Corvette (241)
Material: Aluminum
Combustion Chamber Volume: 66.67cc
Intake Port Volume: 200cc
Exhaust Port Volume: 70cc
Intake Valve Diameter: 2.00 inches
Exhaust Valve Diameter: 1.55 inches
Casting Number 243
LS6
01+ 5.7L Corvette
Material: Aluminum
Combustion Chamber Volume: 64.45cc
Intake Port Volume: 210cc
Exhaust Port Volume: 75cc
Intake Valve Diameter: 2.00 inches
Exhaust Valve Diameter: 1.55 inches
Thats from a search lol.Yes there the same ports but Id say the 317s with a nice mill would flow better than heads off a 99 vette. Being that ive read that the 317s flow similar to ls6 heads but the low compression sucks. But being that there going on a lq4 (if stock pistons) the compression is still ganna be low even with a mill. Im sure someone with more input will chim in
