what SBC head to run?
05-11-2007, 03:04 PM
#1
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what SBC head to run?
I have a SBC in my boat, it is a Chris Craft 245 Limited, I have a balanced and forged roller shortblock, now with 9.5:1 with 64 CC heads, GM cam ZZ( (112LCA INT.212 EXH .226 Lift is .483/.520 I have dart sprtsman200 heads with a 200CC intake runner, performer intake, and 650 holley, I am thinking my heads are killing the torque, I got them cheap so I thought I would try them, I was thinking going with a 170-180CC intake runner, does that sound good with the cam I have?
what kind of small block combos are people running?
what kind of small block combos are people running?
05-11-2007, 05:06 PM
#2
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Here's mine....
355ci
Eagle 4340 3.480" crank, forged I beams and TRW L2304 forged pistons, rotating assembly balanced very well. 1980-85 4 bolt block align honed, decked .020", bored .030" Melling M55A HO oil pump, Moroso 7qt oil pan w windge tray.
Edelbrock Performer RPM intake
AFR 190cc aluminum heads 74cc 10.0-1 SCR, .039 quench, 2.02I, 1.60E, Flow 261cfm @ .500 with strong midlift flow numbers
Morel Retrofit Roller lifters
224/230 .537/.511 112LSA 110ICL roller cam
Crane 1.6 roller rockers on I, Lunati 1.52 rollers on E
Holley 4150 750CFM carb
Smith Bros .083" wall 1 piece pushrods
Glenwood Marine HP aluminum manifolds w FastGlass 4" stainless smooth long risers that are 16" long. Almost a dry system as water hits the exhaust 3" before it leaves the tips. No Reversion
The 200cc's ports you currently have are a tad big for a 350.
A high velocity 180cc port would work better but that's alot of $$ for what gain I cannot say. Keeping the larger port is just going to need to be spun up higher. 5500+ rpms.
I like the AFR 190cc's, they flow great and make awesome power. The new Eliminators are even better than mine.
355ci
Eagle 4340 3.480" crank, forged I beams and TRW L2304 forged pistons, rotating assembly balanced very well. 1980-85 4 bolt block align honed, decked .020", bored .030" Melling M55A HO oil pump, Moroso 7qt oil pan w windge tray.
Edelbrock Performer RPM intake
AFR 190cc aluminum heads 74cc 10.0-1 SCR, .039 quench, 2.02I, 1.60E, Flow 261cfm @ .500 with strong midlift flow numbers
Morel Retrofit Roller lifters
224/230 .537/.511 112LSA 110ICL roller cam
Crane 1.6 roller rockers on I, Lunati 1.52 rollers on E
Holley 4150 750CFM carb
Smith Bros .083" wall 1 piece pushrods
Glenwood Marine HP aluminum manifolds w FastGlass 4" stainless smooth long risers that are 16" long. Almost a dry system as water hits the exhaust 3" before it leaves the tips. No Reversion
The 200cc's ports you currently have are a tad big for a 350.
A high velocity 180cc port would work better but that's alot of $$ for what gain I cannot say. Keeping the larger port is just going to need to be spun up higher. 5500+ rpms.
I like the AFR 190cc's, they flow great and make awesome power. The new Eliminators are even better than mine.
05-11-2007, 05:59 PM
#3
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Here's mine....
355ci
Eagle 4340 3.480" crank, forged I beams and TRW L2304 forged pistons, rotating assembly balanced very well. 1980-85 4 bolt block align honed, decked .020", bored .030" Melling M55A HO oil pump, Moroso 7qt oil pan w windge tray.
Edelbrock Performer RPM intake
AFR 190cc aluminum heads 74cc 10.0-1 SCR, .039 quench, 2.02I, 1.60E, Flow 261cfm @ .500 with strong midlift flow numbers
Morel Retrofit Roller lifters
224/230 .537/.511 112LSA 110ICL roller cam
Crane 1.6 roller rockers on I, Lunati 1.52 rollers on E
Holley 4150 750CFM carb
Smith Bros .083" wall 1 piece pushrods
Glenwood Marine HP aluminum manifolds w FastGlass 4" stainless smooth long risers that are 16" long. Almost a dry system as water hits the exhaust 3" before it leaves the tips. No Reversion
The 200cc's ports you currently have are a tad big for a 350.
A high velocity 180cc port would work better but that's alot of $$ for what gain I cannot say. Keeping the larger port is just going to need to be spun up higher. 5500+ rpms.
I like the AFR 190cc's, they flow great and make awesome power. The new Eliminators are even better than mine.
355ci
Eagle 4340 3.480" crank, forged I beams and TRW L2304 forged pistons, rotating assembly balanced very well. 1980-85 4 bolt block align honed, decked .020", bored .030" Melling M55A HO oil pump, Moroso 7qt oil pan w windge tray.
Edelbrock Performer RPM intake
AFR 190cc aluminum heads 74cc 10.0-1 SCR, .039 quench, 2.02I, 1.60E, Flow 261cfm @ .500 with strong midlift flow numbers
Morel Retrofit Roller lifters
224/230 .537/.511 112LSA 110ICL roller cam
Crane 1.6 roller rockers on I, Lunati 1.52 rollers on E
Holley 4150 750CFM carb
Smith Bros .083" wall 1 piece pushrods
Glenwood Marine HP aluminum manifolds w FastGlass 4" stainless smooth long risers that are 16" long. Almost a dry system as water hits the exhaust 3" before it leaves the tips. No Reversion
The 200cc's ports you currently have are a tad big for a 350.
A high velocity 180cc port would work better but that's alot of $$ for what gain I cannot say. Keeping the larger port is just going to need to be spun up higher. 5500+ rpms.
I like the AFR 190cc's, they flow great and make awesome power. The new Eliminators are even better than mine.
05-11-2007, 08:36 PM
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I have AFR 180 Elimators. I purchased these heads at the recomendation of RM Builder. He is also grinding a cam to match the combo. The new 180 eliminators outlflow the old 190s, the small port should produce high velocity and great torque. I will tell you how it turns out once I get it together. They are going on a 383 w/ 6inch rods.
05-11-2007, 10:24 PM
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383 with:
Dart iron Eagle 200, 72cc.
Forged flat tops
crane 284H (228@050), .480 lift w /1.5 rockers
1.6 comp cams stainless rollers
Brodix dual plane
bG 750 mech secondaries
10.2:1 comp
Rhodes lifters
Revolution exhaust.
This motor pulls better than a 454 Mag. Seat o' pants dyno (semi educated guess is a bit above 400 HP in boat.
Instead of spending money on new heads, get that thing stroked! Then the heads would be perfect.
Dart iron Eagle 200, 72cc.
Forged flat tops
crane 284H (228@050), .480 lift w /1.5 rockers
1.6 comp cams stainless rollers
Brodix dual plane
bG 750 mech secondaries
10.2:1 comp
Rhodes lifters
Revolution exhaust.
This motor pulls better than a 454 Mag. Seat o' pants dyno (semi educated guess is a bit above 400 HP in boat.
Instead of spending money on new heads, get that thing stroked! Then the heads would be perfect.
05-11-2007, 11:51 PM
#6
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383 with:
Dart iron Eagle 200, 72cc.
Forged flat tops
crane 284H (228@050), .480 lift w /1.5 rockers
1.6 comp cams stainless rollers
Brodix dual plane
bG 750 mech secondaries
10.2:1 comp
Rhodes lifters
Revolution exhaust.
This motor pulls better than a 454 Mag. Seat o' pants dyno (semi educated guess is a bit above 400 HP in boat.
Instead of spending money on new heads, get that thing stroked! Then the heads would be perfect.
Dart iron Eagle 200, 72cc.
Forged flat tops
crane 284H (228@050), .480 lift w /1.5 rockers
1.6 comp cams stainless rollers
Brodix dual plane
bG 750 mech secondaries
10.2:1 comp
Rhodes lifters
Revolution exhaust.
This motor pulls better than a 454 Mag. Seat o' pants dyno (semi educated guess is a bit above 400 HP in boat.
Instead of spending money on new heads, get that thing stroked! Then the heads would be perfect.
05-11-2007, 11:56 PM
#7
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Here's mine....
355ci
Eagle 4340 3.480" crank, forged I beams and TRW L2304 forged pistons, rotating assembly balanced very well. 1980-85 4 bolt block align honed, decked .020", bored .030" Melling M55A HO oil pump, Moroso 7qt oil pan w windge tray.
Edelbrock Performer RPM intake
AFR 190cc aluminum heads 74cc 10.0-1 SCR, .039 quench, 2.02I, 1.60E, Flow 261cfm @ .500 with strong midlift flow numbers
Morel Retrofit Roller lifters
224/230 .537/.511 112LSA 110ICL roller cam
Crane 1.6 roller rockers on I, Lunati 1.52 rollers on E
Holley 4150 750CFM carb
Smith Bros .083" wall 1 piece pushrods
Glenwood Marine HP aluminum manifolds w FastGlass 4" stainless smooth long risers that are 16" long. Almost a dry system as water hits the exhaust 3" before it leaves the tips. No Reversion
The 200cc's ports you currently have are a tad big for a 350.
A high velocity 180cc port would work better but that's alot of $$ for what gain I cannot say. Keeping the larger port is just going to need to be spun up higher. 5500+ rpms.
I like the AFR 190cc's, they flow great and make awesome power. The new Eliminators are even better than mine.
355ci
Eagle 4340 3.480" crank, forged I beams and TRW L2304 forged pistons, rotating assembly balanced very well. 1980-85 4 bolt block align honed, decked .020", bored .030" Melling M55A HO oil pump, Moroso 7qt oil pan w windge tray.
Edelbrock Performer RPM intake
AFR 190cc aluminum heads 74cc 10.0-1 SCR, .039 quench, 2.02I, 1.60E, Flow 261cfm @ .500 with strong midlift flow numbers
Morel Retrofit Roller lifters
224/230 .537/.511 112LSA 110ICL roller cam
Crane 1.6 roller rockers on I, Lunati 1.52 rollers on E
Holley 4150 750CFM carb
Smith Bros .083" wall 1 piece pushrods
Glenwood Marine HP aluminum manifolds w FastGlass 4" stainless smooth long risers that are 16" long. Almost a dry system as water hits the exhaust 3" before it leaves the tips. No Reversion
The 200cc's ports you currently have are a tad big for a 350.
A high velocity 180cc port would work better but that's alot of $$ for what gain I cannot say. Keeping the larger port is just going to need to be spun up higher. 5500+ rpms.
I like the AFR 190cc's, they flow great and make awesome power. The new Eliminators are even better than mine.
05-12-2007, 11:36 AM
#9
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Stroker kit is not happening this year, I need to make the best with what I have as far as a shortblock, I am going to go with 170-180CC runner and advance the cam 4 degrees, cam motion said to also bring the power band down.
