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Cam and Tranny


ericdunivan

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Got me a Lingenfelter GT-9 Cam and dual valve spring kit, a RPM Stage 6 Transmission and a Billit TCS 3000 stall converter. All going in this coming weekend. Anyone have any input on the cam? I have a Radix Magnacharger and putting 2.8 pully on at the same time.

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My thought is that this is a little over kill on this cam. It will work best with more cubic inches displacement, and a larger supercharger. I hope you have Headers in your plans as well, as this cam is biased on the exhaust side. Please take a look at the link, if you have not already. I hope is is helpful.

 

CD

 

 

https://www.lingenfelter.com/engine-packages/c6-zr1-ls9-2009-2013/c6-corvette-zr1-378-cid-ls9-supercharged-engine-package-750-hp

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Thanks for the link! I have T.O.G. headers on it already. They, I guess, are considered "mid length" because they are longer then "shorties" and shorter then "long tubes" and i think the diameter is 1 5/8 inch. I called Lingenfelter directly and spoke with their tech and told him all the mods I currently have and he recomended the GT-9 cam, dual spring kit with titanium keepers and a billit timing chain set, which i also purchased.

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I'm no cam expert but it looks like this is on the high side for exhaust duration and lift. I'd wait to talk to someone with more knowledge or your tuner for advise on it. I'd personally get rid of the headers you have now and get some long tubes, minimum 1 3/4, if not 1 7/8", they'll compliment the supercharger nicely and a cam.

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Thanks BlownSS/T. All input is greatly appreciated. I will measure the headers to make sure of the size. My tuner is the one that recomended the GT-9 for the exhaust duration because of the supercharger forcing air/fuel in, needs to also be let out. He works for GM and flies all over the country tuning LSx motors and mentioned he had the best luck with the GT-9 producing the best overall outcome for my type of situation. He first does a dyno tune, then we drive around a bit and he tweeks it for driving conditions. I will post some Dyno sheets when all is said and done.

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That is indeed alot of cam for a stock block LQ9 and your current mods... I really like my cam in my sig ( there are better blower cams but this one sounds nice and runs very well) TSP makes good cams you may want to check out Something in the 580's-590's and a LSA of 113 or more will be a great cam... I think it was the 228R but don't quote me on that and I think Zippy recommended that cam to me as well if I ever decided I had extra money in my pocket burning a hole as the gains would be minimal like 10-15hp from what I run now which is more of a N/A cam... Still alot better than stock...

 

Also make sure you have the supporting fuel mods!!! I run meth as a saftey precaution and to help with octane... Also I'd recommend 60lbs injectors or more as the 42's may run close to 80%. My 60's run about 55-65% duty cycle... I will also fore warn you that you may want to check into a bigger fuel pump especially going to 2.8"... Also with the 2.8" pulley you will be getting diminishing returns unless you run something to combat IAT's...

 

I'd recommend METH 50/50 mix which will help 20-30' decrease in IAT on boost and a much slower rise as well as help run pump gas better with the octane increase... Also a bigger supercharger coolant resovoir would help as the factory one only holds a quart, (I've added a 1Gallon)...

 

The Top 2 would be NO2 50-75shot (which would net very substantial gains in performance as well as cooling the intake charge) or phenolic spacer from Ray which has reportedly been a must have for anyone running an older Radix ( This is due to the poor design of the headunit intercooler laying directly on the intake and heads/Block soaking up all engine heat, The spacer would be that must needed barrier preventing heat soak and reportedly letting you run that maggie at ambient temps when without it runs 20-50 degrees above and much higher under boost)... The bigger spacer also gives you tad more displacment too for a good 2-3more psi.. I know you had to put a new one in for your returnless fuel system, but for me the stock fuel pump and the inline fuel pump from Magnusen is on the verge of MAX as my pressure rises quite a bit on accel...

 

I personally run the bigger resovoir, and meth... I have NO2 just not installed yet... With just those 2 Mods and a 2.8" pulley I have went from seeing 200+ degree IAT's on a 80' day reaching those temps in mere seconds to nothing more than 165' on a similar 80' day gradually reaching that temp in 10's of seconds.... Plus with the meth you can run it with NO2 and it will help add a small safety buffer as it adds octane.... These are my .02cents and 9-10 years experience with my truck....

 

FYI- I see about 9-9.5PSI of boost with a 2.8" but I have shorty gibsons. When i go 17/8" LT's I will probably see 8.5-9psi overall and hopefully pick up Rays spacer someday to get me back up to 10-11PSI overall LOL...

 

Check this link out--- You can't say its a bad setup with wheel spin lol https://www.facebook.com/james.forbord?ref=tn_tnmn#!/photo.php?v=764007193630800&set=vb.100000645801109&type=2&theater

Edited by 2003_SuperSport (see edit history)
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Thanks for the link! I have T.O.G. headers on it already. They, I guess, are considered "mid length" because they are longer then "shorties" and shorter then "long tubes" and i think the diameter is 1 5/8 inch. I called Lingenfelter directly and spoke with their tech and told him all the mods I currently have and he recomended the GT-9 cam, dual spring kit with titanium keepers and a billit timing chain set, which i also purchased.

I don't know your future mods but I stuck with my factory rockers and timing chain and only went with behive springs and some Hardened pushrods... Not sure if the titanium keepers or timing chain is necessary for just a cam or even like my setup... It certainly wont hurt and maybe good insurance as all vehicles respond to mods differently...

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nice launch! 2003_SuperSport. My fuel pump puts out 344 LPH and consistant 62 lbs of pressure. Was thinking the fuel injectors should be a bit bigger. Your sig says yours are 60's. What kind of pressure are you maintaining? That cam you have is just a TAD smaller then the Comp cam i was considering. Comp part #544-444-11 224/230- 581/592 114LSA

Can't wait to get it all together, will probably upgrade headers and heads after all done with this. I think im going to see how it performs first. Thanks for the well thought out info everyone.

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nice launch! 2003_SuperSport. My fuel pump puts out 344 LPH and consistant 62 lbs of pressure. Was thinking the fuel injectors should be a bit bigger. Your sig says yours are 60's. What kind of pressure are you maintaining? That cam you have is just a TAD smaller then the Comp cam i was considering. Comp part #544-444-11 224/230- 581/592 114LSA

Can't wait to get it all together, will probably upgrade headers and heads after all done with this. I think im going to see how it performs first. Thanks for the well thought out info everyone.

My duty cycle for the deka 60's are at 55-65% My fuel pressure at idle and cruising is about 52-55ish which is about right for stock fuel pumps... Under WOT it climbs up to around 65lbs... Keep in mind that with the deka's you will need fuel rail spacers about 1/2" as the siemen dekas are taller than stock

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My duty cycle for the deka 60's are at 55-65% My fuel pressure at idle and cruising is about 52-55ish which is about right for stock fuel pumps... Under WOT it climbs up to around 65lbs... Keep in mind that with the deka's you will need fuel rail spacers about 1/2" as the siemen dekas are taller than stock

Thanks, Im hoping what I have is going to keep me happy........for a while. Think I will swap out the injectors when i do the heads and header replacement. All good info and very appreciated. Hearing through the grapevine that some guy with a pacecar Tundra wanting to race me already. Geeze. I was told his best run was 12.4 so crossing my fingers LOL.

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Thanks, Im hoping what I have is going to keep me happy........for a while. Think I will swap out the injectors when i do the heads and header replacement. All good info and very appreciated. Hearing through the grapevine that some guy with a pacecar Tundra wanting to race me already. Geeze. I was told his best run was 12.4 so crossing my fingers LOL.

Is this tundra from Sacramento by chance?

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Yes he is, Do you know him?

Also, just noticed you are from California. Are you local to Sac? I'm in Rocklin

I'm from Cali but in the southern area of cen cal. That TRD is from Sacramento, but comes out this way every now and then. I've seen it run a best of 12.9 in the 1/4.

If it's the same one I'm thinking it's a black single cab supercharged TRD, 20" oem wheels.

 

The day I was going to race it I had worked a night shift and was suppose to be an early morning race but they never came through. I was trying to get 3 money runs done at the same time. Didn't happen, but a couple of the trucks I've ran before on the street for $ beat that TRD later that day.

I think he's suppose to get more mods done from what the guys were telling me.

post-12433-140978288458_thumb.jpg

Is it the same one?

If it is the same truck, with your mods you should have no problem, I barely have a few mods done but it runs well for what it is.

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I'm from Cali but in the southern area of cen cal. That TRD is from Sacramento, but comes out this way every now and then. I've seen it run a best of 12.9 in the 1/4.

If it's the same one I'm thinking it's a black single cab supercharged TRD, 20" oem wheels.

 

The day I was going to race it I had worked a night shift and was suppose to be an early morning race but they never came through. I was trying to get 3 money runs done at the same time. Didn't happen, but a couple of the trucks I've ran before on the street for $ beat that TRD later that day.

I think he's suppose to get more mods done from what the guys were telling me.

attachicon.gifImageUploadedByTapatalk1409782879.747558.jpg

Is it the same one?

If it is the same truck, with your mods you should have no problem, I barely have a few mods done but it runs well for what it is.

Same truck. Looks like the guy too. thin hispanic guy with kind of long curly and shiney hair. Nice guy and he LOVES his truck, a lot. I will let you know how i do against him. He is known for wanting to race for $$$$

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Same truck. Looks like the guy too. thin hispanic guy with kind of long curly and shiney hair. Nice guy and he LOVES his truck, a lot. I will let you know how i do against him. He is known for wanting to race for $$$$

Ok ya that's him lol, from what my buddies say he's a cool guy and just loves to race. He was suppose to be doing a posi rear end and wanted to up the boost. I don't really care for racing for money, I just love doing it period but $ always makes it more exciting.

 

Ya let me know how it goes, best I've seen it do is 12.9 and consistently in the low 13's out here at famoso raceway. I'll try and see if I can catch a race next time with him, I'd prefer to have a cam and tune at the very least the next time he's out here but I'll do it either way.

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