cylinder head confusion
#1
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hey guys,
one of the intake valves recently decided to break off and wedge into the head. long story short, i need a new head.
My car is a 2002 camaro with 243 casting heads, however, i have no idea if they are from a 5.3 or a 5.7. Since the combustion cambers are slightly different between the two, how can i tell them apart?
Im assuming it would be bad run miss matching heads, one from 5.3 and 5.7
any info would be great, also if anyone is selling a 243 head, pm me please
thanks!
one of the intake valves recently decided to break off and wedge into the head. long story short, i need a new head.
My car is a 2002 camaro with 243 casting heads, however, i have no idea if they are from a 5.3 or a 5.7. Since the combustion cambers are slightly different between the two, how can i tell them apart?
Im assuming it would be bad run miss matching heads, one from 5.3 and 5.7
any info would be great, also if anyone is selling a 243 head, pm me please
thanks!
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and before anyone says it, yes I've looking into getting the head repaired, however, the hat wedged deep into the intake and punched into the water jacket, both seats are warped, and the spark plug hole is warped/bent/out of shape. so ya its repairable but not really cost effective and would sketch me out with the possibility of breaking and damaging more parts
#6
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^^^Correct. 243s are the same either way. The only difference is in the valve.
Why not take the bad situation and upgrade. I can get you in a set of CNC ported 67CC Chamber 317s that will pick you up 40+HP from your stock ones for $1099 a pair assembled. Give me a call if I can help.
Thank you,
Kyle
972-853-2450
Thompson Motorsports
Why not take the bad situation and upgrade. I can get you in a set of CNC ported 67CC Chamber 317s that will pick you up 40+HP from your stock ones for $1099 a pair assembled. Give me a call if I can help.
Thank you,
Kyle
972-853-2450
Thompson Motorsports
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ok so the difference is the valves. somewhere else on here i read that the cc of the chamber was slightly different. guess not.
found this:
GM numbers:
Stock LS2/1 etc. solid valves --intake 99 grams exhaust 86 grams
Stock LS6 lightweight valves --intake 76 grams exhaust 63 grams
thanks for the info
found this:
GM numbers:
Stock LS2/1 etc. solid valves --intake 99 grams exhaust 86 grams
Stock LS6 lightweight valves --intake 76 grams exhaust 63 grams
thanks for the info
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^^^Correct. 243s are the same either way. The only difference is in the valve.
Why not take the bad situation and upgrade. I can get you in a set of CNC ported 67CC Chamber 317s that will pick you up 40+HP from your stock ones for $1099 a pair assembled. Give me a call if I can help.
Thank you,
Kyle
972-853-2450
Thompson Motorsports
Why not take the bad situation and upgrade. I can get you in a set of CNC ported 67CC Chamber 317s that will pick you up 40+HP from your stock ones for $1099 a pair assembled. Give me a call if I can help.
Thank you,
Kyle
972-853-2450
Thompson Motorsports
#11
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
.100" 78 .100" 57
.200" 138 .200" 106
.300" 204 .300" 140
.400" 259 .400" 166
.500" 288 .500" 185
.600" 306 .600" 194
.650" 310 .650" 197
.700" 313 .700" 200
They are great heads. Give us a call if we can help with a set. We do offer them in 243/799 castings as well.
Thank you,
Kyle
972-853-2450
.200" 138 .200" 106
.300" 204 .300" 140
.400" 259 .400" 166
.500" 288 .500" 185
.600" 306 .600" 194
.650" 310 .650" 197
.700" 313 .700" 200
They are great heads. Give us a call if we can help with a set. We do offer them in 243/799 castings as well.
Thank you,
Kyle
972-853-2450
#12
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![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
.100" 78 .100" 57
.200" 138 .200" 106
.300" 204 .300" 140
.400" 259 .400" 166
.500" 288 .500" 185
.600" 306 .600" 194
.650" 310 .650" 197
.700" 313 .700" 200
They are great heads. Give us a call if we can help with a set. We do offer them in 243/799 castings as well.
Thank you,
Kyle
972-853-2450
.200" 138 .200" 106
.300" 204 .300" 140
.400" 259 .400" 166
.500" 288 .500" 185
.600" 306 .600" 194
.650" 310 .650" 197
.700" 313 .700" 200
They are great heads. Give us a call if we can help with a set. We do offer them in 243/799 castings as well.
Thank you,
Kyle
972-853-2450
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#16
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In this instance, the Thompson heads may be better suited depending on what all comes with them for $1100 assembled, especially if I can opt for a slightly larger chamber.
This is considering I could sell the 243 heads I have now with PAC springs for ~500 local and only have $600 or so in a head upgrade. That's $200 cheaper than having my 243s worked over by AI.
This is considering I could sell the 243 heads I have now with PAC springs for ~500 local and only have $600 or so in a head upgrade. That's $200 cheaper than having my 243s worked over by AI.
#19
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At $1099 they will include the Pac 1218 single springs good to .600", We can do the Pac duals with titanium retainers for $1199. We also offer things like Stainless valves 2.02" intake $129.99 1.600" exhaust $129.99 and bronze guide liners for $200.