Q's about Ported LS1 Heads for a 383 Stroker.
#5
Originally Posted by waterbug1999
Planning on building a 383. Can the LS1 heads, ported and polished handle the CFM for the stroker? Thanks fellas. Just trying to figure out what to do WHEN i get to this point.
#6
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From: harrisburg, pa
Dont get caught up in high lift cfm either. My Rapid Stage 2 LS1 2.02/1.57 heads flow almost 300cfm/230cfm at .500; over that at .600 while still kicking *** at lower cfm. Compare that to others. I dont give up anything. Alot of these other places make heads for high lift/rpm only...which isnt desireable on a streetcar. I have perfect stock compression 383 heads...92 octane...242/250 .595/.595 109 RUMBLE
My ARE S2 2.055/1.60 are sitting on the shelf.
My ARE S2 2.055/1.60 are sitting on the shelf.
#7
The head plans for my combo have changed three times. I was originally going to go with a 5.3 CNC head. Then thought about trying a 6L head.
Finally we are going with a CNC LS6 head. (I didnt go with a domed piston so making the compression I wanted on a 6L head would have been difficult)
2.055/1.57 valves and shooting for close to 330cfm at .600 lift on a 3.905 bore at 28 inches
My intended rpm/power range is ~3700-6600rpm
The rest of my combo is 385 stroker with eagle crank/rods and diamond pistons. 242/246 110LSA cam on XE-R lobes
Chris
Finally we are going with a CNC LS6 head. (I didnt go with a domed piston so making the compression I wanted on a 6L head would have been difficult)
2.055/1.57 valves and shooting for close to 330cfm at .600 lift on a 3.905 bore at 28 inches
My intended rpm/power range is ~3700-6600rpm
The rest of my combo is 385 stroker with eagle crank/rods and diamond pistons. 242/246 110LSA cam on XE-R lobes
Chris
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#8
I had LS1 heads on my 388 all-bore. Worked fine, made good power. I would suggest a bigger cam though, since the bigger displacement kind of swallows up what might seem like a big cam on stock cubes.