GM Performance head/cam for LT1
Thread Starter
Instructor
Joined: May 2018
Posts: 237
Likes: 65
From: Central CT
GM Performance head/cam for LT1
Was wondering if anyone has tried or know someone using the GM Performance head and cam kit for their lt1. Wondering what the advantage or disadvantages are. I'm going to assume it voids warranty even though part comes from GM themselves. Better off with after market? New to this motor and car so thanks in advance. Not looking for a track monster. Just want to gain some power for street fun.
GM part # 19333525
https://www.gmperformancemotor.com/parts/19333525.html
GM part # 19333525
https://www.gmperformancemotor.com/parts/19333525.html
Drifting
Joined: Jun 2000
Posts: 1,577
Likes: 99
From: Dubai, UAE
I saw head flow results & intake flow numbers were identical to stock. Also a car with this package + headers dynoed only 450 rwhp
IMO, head/cam package from TSP costs almost the same and gives much more proven results
IMO, head/cam package from TSP costs almost the same and gives much more proven results
Team Owner
Joined: Jan 2007
Posts: 29,063
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From: cookeville tennessee
ttt
Message to you on a also vendor in here Cajun@Edgyvette.com great guy & also will be doing a full forged motor build for me now. 
Robert
Robert
Thread Starter
Instructor
Joined: May 2018
Posts: 237
Likes: 65
From: Central CT
That Camaro sounds great. According to his YouTube answers he hasn't had it on the dyno. No idea how he tuned it unless street tune. I wonder what he's putting out and how it drives. Can't find his forum posts.
Racer
Joined: Aug 2016
Posts: 337
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From: kansas city missouri
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Drifting
Joined: Feb 2001
Posts: 1,768
Likes: 297
From: Plano TX
535hp at the crank.
https://www.chevrolet.com/performanc...ines/lt376-535
This crate motor is the LT1 with the H/C package.
https://www.chevrolet.com/performanc...ines/lt376-535
This crate motor is the LT1 with the H/C package.
Thread Starter
Instructor
Joined: May 2018
Posts: 237
Likes: 65
From: Central CT
I saw that. That's not bad when you add a few more pieces could prob get 550 crank but the fact even if GM installs voids warranty and needs separate tune plus this guy had to change lifters and cam after 10k miles makes me feel like either a custom set up from another shop or just slap a pro charger or other centi on and be done with it. Should have 600 with super charger set up easy and I don't track or race. Just for free way fun and cruises/car shows. Thanks
Thread Starter
Instructor
Joined: May 2018
Posts: 237
Likes: 65
From: Central CT
if you don't mind me asking KC stingray what did you decide to go with. How is driveability and power? I'm looking for something that's easy to drive with linear power. That's why no turbos for me. Did you build up anything in the motor or tranny at all? I have been looking into different set ups. Personally if I had the cash I would go to Callaway but that's big money. Almost double what other setups run.
Racer
Joined: Aug 2016
Posts: 337
Likes: 48
From: kansas city missouri
i went with procharger p1x kit with race inlet, and vertical intercooler. i did not want to run meth or e85. so this kit is great for pump gas at 7psi. like you not looking for a track monster, just extra power. here are a couple short videos.
Melting Slicks
Joined: Nov 2007
Posts: 2,473
Likes: 255
From: But it's a DRY HEAT! Tucson
my own experience with gm performance parts has been great. back in the day my over the counter built chevelle would romp on the big aftermarket builds while being a great street car. have no experience with the gm cam/head package available now. i wish my gs had the 535 motor. it would be perfect for me. . when my warranty is up and i decide to mod, if i go n.a. i will try the gm kit. if i decide to go forced induction thats a whole different story. i am not against forced induction, just really dig hi-po na engine in sports car.
Former Vendor
Joined: Mar 2003
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From: Tampa FL
St. Jude Donor '07-'08-'09-'10-'11-'12'-'13-'14-'15
Message to you on a also vendor in here Cajun@Edgyvette.com great guy & also will be doing a full forged motor build for me now. Robert
Robert
Thread Starter
Instructor
Joined: May 2018
Posts: 237
Likes: 65
From: Central CT
I really wish the grand sport was at around 550 crank. A sweet spot between the stingray and a z06. A higher revving NA similar to the old 7.0 z motor would be cool. I'm no engine builder so no idea if it's even possible to get 550 crank out of the lt1 reliably and with good street manners. Not for drag racing but for me just to have some on ramp or freeway fun.
Racer
Joined: Aug 2016
Posts: 337
Likes: 48
From: kansas city missouri
600 at the rear wheel and lower is safe for the lt1. procharger comes with a safe tune, or find a competent tuner who understands the lt1 powetrain. edelbrock is another option, but is a roots blower. kit also comes with a tune and runs six psi. tons of threads on this topic. do some research ,and good luck.
Last edited by kc stingray; Jul 15, 2018 at 11:22 PM.
Thread Starter
Instructor
Joined: May 2018
Posts: 237
Likes: 65
From: Central CT
600 at the rear wheel and lower is safe for the lt1. procharger comes with a safe tune, or find a competent tuner who understands the lt1 powetrain. edelbrock is another option, but is a roots blower. kit also comes with a tune and runs six psi. tons of threads on this topic. do some research ,and good luck.