02-17-2015, 12:36 AM | #1 |
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243 head label
Has anyone seen this before? It was on both heads at the rear. I am not sure what it is? are my heads rebuilt? Or is this factory ?
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1956 Chevy Bel Air 2 door 1956 Chevy 210 4 Door 1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD 1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E 1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR *SOLD* GO GO!!! |
02-17-2015, 01:45 AM | #2 |
meowMEOWmeowMEOW
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Re: 243 head label
I don't see an attachment. Anyone else, or is it on my side?
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02-17-2015, 02:16 AM | #3 |
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Re: 243 head label
This is my build thread. There is a picture the last post by me.
http://67-72chevytrucks.com/vboard/s...d.php?t=659275
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1956 Chevy Bel Air 2 door 1956 Chevy 210 4 Door 1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD 1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E 1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR *SOLD* GO GO!!! |
02-17-2015, 02:30 AM | #4 |
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Re: 243 head label
Its a heat tab it the center is melted volid the WARRANTY means they got head if melted normally put on with new head or when engine was rebulit
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02-17-2015, 02:37 AM | #5 |
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Re: 243 head label
Interesting.
Also It reads "TEAM PRP" do you know what that is?
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1956 Chevy Bel Air 2 door 1956 Chevy 210 4 Door 1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD 1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E 1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR *SOLD* GO GO!!! |
02-17-2015, 11:14 AM | #6 | ||
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Re: 243 head label
Quote:
Quote:
My google-fu was strong today. http://www.donsauto.com/warranties/gold-coverage-9.html
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1972 2wd K/5 Blazer Turbocharged 370 LSx - 941 rwhp / 1093 rwtq 1969 Chevy K-10 L33 5.3 / 4L80E / NP241 / 4" lift 1964 Buick Skylark Twin TURBO 383 LS pro-touring project 2014 VW Passat TDI - Daily Driver Turbo diesel 2015 Sierra Denali HD Duramax Turbo diesel 2023 Ford Explorer ST - Twin Turbskis 2023 Ford F150 RCSB - Whipple Supercharged 2017 Polaris RZR Turbo 2014 Nor-Tech Center Console - Twin Supercharged Outboards TURBO ALL THE THINGS!! |
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02-17-2015, 01:17 PM | #7 | |
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Re: 243 head label
Quote:
I never thought to just google it. Did GM make 243 heads with different internals, like Springs, Valves etc.
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1956 Chevy Bel Air 2 door 1956 Chevy 210 4 Door 1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD 1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E 1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR *SOLD* GO GO!!! |
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02-17-2015, 02:31 PM | #8 | |
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Re: 243 head label
Quote:
The 243s that originally came on LS6 engines ONLY (Z06, CTS-V) have the hollow stem intake valves, and sodium filled exhaust valves to allow higher RPM usage. They also have the "yellow" valve springs for use with the LS6 cam. The 243s that came on 5.3 engines, and LS2 engines have solid stem valves. The 5.3s have "normal" springs, and I believe the LS2s also have the yellow springs....which would make sense, since the cam specs are the same as the LS6 cam. The castings are the same.
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1972 2wd K/5 Blazer Turbocharged 370 LSx - 941 rwhp / 1093 rwtq 1969 Chevy K-10 L33 5.3 / 4L80E / NP241 / 4" lift 1964 Buick Skylark Twin TURBO 383 LS pro-touring project 2014 VW Passat TDI - Daily Driver Turbo diesel 2015 Sierra Denali HD Duramax Turbo diesel 2023 Ford Explorer ST - Twin Turbskis 2023 Ford F150 RCSB - Whipple Supercharged 2017 Polaris RZR Turbo 2014 Nor-Tech Center Console - Twin Supercharged Outboards TURBO ALL THE THINGS!! |
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02-17-2015, 05:41 PM | #9 |
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Re: 243 head label
OK thanks for the info..... so even though they are 243's.... to put a LS6 or LS2 cam in a motor with 243 heads it will need to change the springs? anything else?
My sons truck will have a 4.8 and was thinking about putting a cam in it before I install it, but maybe not as I don't want to create any problems..
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1956 Chevy Bel Air 2 door 1956 Chevy 210 4 Door 1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD 1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E 1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR *SOLD* GO GO!!! |
02-17-2015, 06:35 PM | #10 |
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Re: 243 head label
There's a chance the 243 heads might already have the yellow springs. If not, I'd do them when you swap the cam. They are only like $60 for all of them
Apparently, these are the replacement for the LS6 yellow springs. https://sdparts.com/details/gm-perfo...parts/12499224
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1972 2wd K/5 Blazer Turbocharged 370 LSx - 941 rwhp / 1093 rwtq 1969 Chevy K-10 L33 5.3 / 4L80E / NP241 / 4" lift 1964 Buick Skylark Twin TURBO 383 LS pro-touring project 2014 VW Passat TDI - Daily Driver Turbo diesel 2015 Sierra Denali HD Duramax Turbo diesel 2023 Ford Explorer ST - Twin Turbskis 2023 Ford F150 RCSB - Whipple Supercharged 2017 Polaris RZR Turbo 2014 Nor-Tech Center Console - Twin Supercharged Outboards TURBO ALL THE THINGS!! |
02-17-2015, 06:48 PM | #11 |
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Re: 243 head label
great thanks for the info!!!
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1956 Chevy Bel Air 2 door 1956 Chevy 210 4 Door 1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD 1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E 1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR *SOLD* GO GO!!! |
02-20-2015, 12:52 AM | #12 |
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Re: 243 head label
Do I need to upgrade springs on the 243 heads with an xr259 cam?
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1956 Chevy Bel Air 2 door 1956 Chevy 210 4 Door 1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD 1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E 1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR *SOLD* GO GO!!! |
02-20-2015, 01:45 AM | #13 |
meowMEOWmeowMEOW
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Re: 243 head label
I'd really consider replacing the springs ANYTIME you do a cam on a junkyard motor. While you won't need anything like beehive springs or doubles, a good set of springs and hardened pushrods should be done with ANY cam job IMO.
The added seat pressure could always prematurely wear and break an old spring. ALL springs have a lifecycle before they break. Its something I've seen with friends who bought performance-oriented vehicles or engines used.
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02-20-2015, 02:36 AM | #14 |
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Re: 243 head label
The motor has 83k on it that is why I asked. Thanks for the info. I may just change the cam etc just because I have not worked on an ls motor yet. And since it is for a 4x4 a torquey cam would do good for the 4.8 ly2.
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1956 Chevy Bel Air 2 door 1956 Chevy 210 4 Door 1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD 1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E 1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR *SOLD* GO GO!!! |
02-20-2015, 11:11 AM | #15 |
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Re: 243 head label
A set of the blue springs i linked to earlier would be perfect for that cam.
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1972 2wd K/5 Blazer Turbocharged 370 LSx - 941 rwhp / 1093 rwtq 1969 Chevy K-10 L33 5.3 / 4L80E / NP241 / 4" lift 1964 Buick Skylark Twin TURBO 383 LS pro-touring project 2014 VW Passat TDI - Daily Driver Turbo diesel 2015 Sierra Denali HD Duramax Turbo diesel 2023 Ford Explorer ST - Twin Turbskis 2023 Ford F150 RCSB - Whipple Supercharged 2017 Polaris RZR Turbo 2014 Nor-Tech Center Console - Twin Supercharged Outboards TURBO ALL THE THINGS!! |
02-20-2015, 01:36 PM | #16 |
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Re: 243 head label
as always thank you guys for the info... any good instructional videos or info on replacing the cam and springs? I know I can just google or youtube but was wondering if you guys had a favorite.
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1956 Chevy Bel Air 2 door 1956 Chevy 210 4 Door 1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD 1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E 1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR *SOLD* GO GO!!! |
02-20-2015, 03:24 PM | #17 |
meowMEOWmeowMEOW
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Re: 243 head label
You gotta pick something the Video Channel guy HASN'T done a video on ....thanks...
Seriously tho, I don't like most of the video's on the topic because the instructions in the factory service manual is better. Here is the PDF for ya http://www.pleasurecraft.com/manuals/L510016.pdf
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02-20-2015, 04:19 PM | #18 | |
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Re: 243 head label
Quote:
Thanks for the help I will try and take pictures as I do it and post to my build thread...
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1956 Chevy Bel Air 2 door 1956 Chevy 210 4 Door 1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD 1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E 1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR *SOLD* GO GO!!! |
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02-20-2015, 04:33 PM | #19 |
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Re: 243 head label
If you can fall off of a chair, you can do a cam swap in an LS.
It doesn't get much easier.
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1972 2wd K/5 Blazer Turbocharged 370 LSx - 941 rwhp / 1093 rwtq 1969 Chevy K-10 L33 5.3 / 4L80E / NP241 / 4" lift 1964 Buick Skylark Twin TURBO 383 LS pro-touring project 2014 VW Passat TDI - Daily Driver Turbo diesel 2015 Sierra Denali HD Duramax Turbo diesel 2023 Ford Explorer ST - Twin Turbskis 2023 Ford F150 RCSB - Whipple Supercharged 2017 Polaris RZR Turbo 2014 Nor-Tech Center Console - Twin Supercharged Outboards TURBO ALL THE THINGS!! |
02-20-2015, 05:03 PM | #20 |
meowMEOWmeowMEOW
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Re: 243 head label
I got a detention in 2nd grade for falling off my chair 13 times in one class day. Needless to say, I'm pretty good with LS engines.
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02-20-2015, 05:44 PM | #21 |
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Re: 243 head label
That actually explains a lot.
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1972 2wd K/5 Blazer Turbocharged 370 LSx - 941 rwhp / 1093 rwtq 1969 Chevy K-10 L33 5.3 / 4L80E / NP241 / 4" lift 1964 Buick Skylark Twin TURBO 383 LS pro-touring project 2014 VW Passat TDI - Daily Driver Turbo diesel 2015 Sierra Denali HD Duramax Turbo diesel 2023 Ford Explorer ST - Twin Turbskis 2023 Ford F150 RCSB - Whipple Supercharged 2017 Polaris RZR Turbo 2014 Nor-Tech Center Console - Twin Supercharged Outboards TURBO ALL THE THINGS!! |
02-20-2015, 07:09 PM | #22 |
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Re: 243 head label
Well we will see!!!! I am great at falling off of just about everything!!!
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1956 Chevy Bel Air 2 door 1956 Chevy 210 4 Door 1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD 1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E 1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR *SOLD* GO GO!!! |
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