Ported LT1 heads
Ported Lt1 Heads W/pics
Selling my ported head's 374 castings, with 2.00/1.55 stainless swirl polished valves with new seals, 55 cc combustion chamber,blended bowls,comp cams cca-941-16 springs for high lift cams, just got them checked out at the machine shop,Henson Racing Engines, and resurfaced, had them flowed also:
IN. .100 .200 .300 .400 .500 .600 .650 lift
65 130 184 209 227 240 244 cfm
EX. .100 .200 .300 .400 .500 .600 .650 lift
48 89 121 148 158 163 164 cfm
74% 68% 66% 71% 70% 68% 67% ratio exhaust to intake
these #'s where obtained from a superflow SF-1020, in oklahoma 8-28-07When the motor was originally built the in. at a diff.shop flowed54,121,181,219,246,248cfm ,Ex. was 43,97,133,160,171,180cfm
I have the print out of todays flow test but cant get it to post ,if you need to see it i can try e-mailing it.The reason being lower exhaust #'s were due to the room temperatures when they were tested the 2nd time,so they will flow the higher #'s.
I have a forged 355 running apprx.11.3.1 cr and with a cc306 and it screamed with these heads, i am just upgrading so I can run a big shot of nitrous without destroying these head and turning them into junk. 1000.00. post pics up soon These are some good heads with good work , we are pretty sure Lynn Morris in okc,ok did it but not confirmed.
http://s137.photobucket.com/albums/q...t=HPIM1014.jpg this should take you to all the photos ,if not let me know.There is also a vid of these heads on my car.
IN. .100 .200 .300 .400 .500 .600 .650 lift
65 130 184 209 227 240 244 cfm
EX. .100 .200 .300 .400 .500 .600 .650 lift
48 89 121 148 158 163 164 cfm
74% 68% 66% 71% 70% 68% 67% ratio exhaust to intake
these #'s where obtained from a superflow SF-1020, in oklahoma 8-28-07When the motor was originally built the in. at a diff.shop flowed54,121,181,219,246,248cfm ,Ex. was 43,97,133,160,171,180cfm
I have the print out of todays flow test but cant get it to post ,if you need to see it i can try e-mailing it.The reason being lower exhaust #'s were due to the room temperatures when they were tested the 2nd time,so they will flow the higher #'s.
I have a forged 355 running apprx.11.3.1 cr and with a cc306 and it screamed with these heads, i am just upgrading so I can run a big shot of nitrous without destroying these head and turning them into junk. 1000.00. post pics up soon These are some good heads with good work , we are pretty sure Lynn Morris in okc,ok did it but not confirmed.
http://s137.photobucket.com/albums/q...t=HPIM1014.jpg this should take you to all the photos ,if not let me know.There is also a vid of these heads on my car.
Last edited by itzkwik; Aug 30, 2007 at 08:48 PM.
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can i get some pictures of them? solarofthesix@hotmail.com
and much appreciated(no sarcasim either) I dont have any dyno or track #'s for these heads but i do know how they made my car run good especially against other cars that I know are fast, maybe it is high, if they dont go within the week they'll go back on my car and see what a 300 shot does for them,I will eventually put some heads on that can handle abuse ,cause the material GM use's to produce their aluminum heads is of not the highest quality and can only handle so many times of instantaneous busrts of pressure and heat via ,blower,turbo or nitrous, the metal gets soft and turns them to junk , but I cant stand not having my car running any more. there are alot of factors that go into play with getting flow numbers,and alot of things that can change them while being tested, and a good head porter knows that there are things that can be done that will give extra HP and you'll never see it on a flow bench.These heads look like the work of lynn morris in OKC,OK, Charlie Helton at Folks Race engines in Norman ,OK did the original flow test with the higher numbers and then did some other porting and never flowed them. Just saying I am not gunna sell junk on here and get a bad rap for it these heads and a good cam will make your car run good


