LT1 Adding Cam and headers
Thread Starter
Safety Car
Joined: Nov 2005
Posts: 4,364
Likes: 934
From: Huntsville Alabama
LT1 Adding Cam and headers
I picked up this C7 a few weeks ago. Its basically a bone stock LT1 with Procharger kit on it. 4.25" pulley, stock Canned tune from Procharger on it. I plan to dyno it this week to have a baseline. expect mid 500s how it sits.
Planning to add headers, Off road X, and a DOD delete cam. (BTR Stage 2 LT1/4 Supercharger cam to be exact)
Few questions. I know 700rwhp seems to be the limit on the stock pistons (Some say 600). Where does everyone think this set up will land HP wise? Will I need to change the pulley to make up for the headers/cam? I have never added headers to a car that was already blown, normal the other way areound. Or do I allow the boost level to drop with the beter flowing combo and see where power raises to? Is this 700 limit normally when using boost only to get there, or the same with headers, and cam, and lower boost? I don't track the car, drive it on street and some spirited pulls or tire spinning is about it.
Any thoughts on this are welcome.
My last BTR stage 2 cam in a C7/LT1 made 505 rwhp NA. so I would assume similar cam, headers, and low boost should add the same 160-180 HP on top bringing it close to 700 mark?
Planning to add headers, Off road X, and a DOD delete cam. (BTR Stage 2 LT1/4 Supercharger cam to be exact)
Few questions. I know 700rwhp seems to be the limit on the stock pistons (Some say 600). Where does everyone think this set up will land HP wise? Will I need to change the pulley to make up for the headers/cam? I have never added headers to a car that was already blown, normal the other way areound. Or do I allow the boost level to drop with the beter flowing combo and see where power raises to? Is this 700 limit normally when using boost only to get there, or the same with headers, and cam, and lower boost? I don't track the car, drive it on street and some spirited pulls or tire spinning is about it.
Any thoughts on this are welcome.
My last BTR stage 2 cam in a C7/LT1 made 505 rwhp NA. so I would assume similar cam, headers, and low boost should add the same 160-180 HP on top bringing it close to 700 mark?
Last edited by mittens; Jan 10, 2022 at 12:46 PM.
Melting Slicks
Joined: Aug 2004
Posts: 2,338
Likes: 482
I picked up this C7 a few weeks ago. Its basically a bone stock LT1 with Procharger kit on it. 4.25" pulley, stock Canned tune from Procharger on it. I plan to dyno it this week to have a baseline. expect mid 500s how it sits.
Planning to add headers, Off road X, and a DOD delete cam. (BTR Stage 2 LT1/4 Supercharger cam to be exact)
Few questions. I know 700rwhp seems to be the limit on the stock pistons (Some say 600). Where does everyone think this set up will land HP wise? Will I need to change the pulley to make up for the headers/cam? I have never added headers to a car that was already blown, normal the other way areound. Or do I allow the boost level to drop with the beter flowing combo and see where power raises to? Is this 700 limit normally when using boost only to get there, or the same with headers, and cam, and lower boost? I don't track the car, drive it on street and some spirited pulls or tire spinning is about it.
Any thoughts on this are welcome.
My last BTR stage 2 cam in a C7/LT1 made 505 rwhp NA. so I would assume similar cam, headers, and low boost should add the same 160-180 HP on top bringing it close to 700 mark?
Planning to add headers, Off road X, and a DOD delete cam. (BTR Stage 2 LT1/4 Supercharger cam to be exact)
Few questions. I know 700rwhp seems to be the limit on the stock pistons (Some say 600). Where does everyone think this set up will land HP wise? Will I need to change the pulley to make up for the headers/cam? I have never added headers to a car that was already blown, normal the other way areound. Or do I allow the boost level to drop with the beter flowing combo and see where power raises to? Is this 700 limit normally when using boost only to get there, or the same with headers, and cam, and lower boost? I don't track the car, drive it on street and some spirited pulls or tire spinning is about it.
Any thoughts on this are welcome.
My last BTR stage 2 cam in a C7/LT1 made 505 rwhp NA. so I would assume similar cam, headers, and low boost should add the same 160-180 HP on top bringing it close to 700 mark?
Thread Starter
Safety Car
Joined: Nov 2005
Posts: 4,364
Likes: 934
From: Huntsville Alabama
Its a lot more money for a drop in piston set (double the cost of a cam), and way more labor. To do a cam, remove the heads and timing cover In the car. I plan to leave the pan in place. vs pulling whole motor.
Supporting Vendor
Joined: Feb 2009
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From: Mesa Az
You will need to pulley it down as you're freeing up some very large restrictions. In regards to the SBE we push LT1's to mid 700 rwhp all the time on oem pistons and I have yet to have a failure to date. The big key is having a tuner that actually knows what the hell they are doing with the LTX motors. Most of them have no clue to be honest.
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Cordes Performance Racing aka "CPR"
Owner of AZ's premier LSX/LTX motorsports shop
http://cordesperformanceracing.com/
www.facebook.com/cordesperformanceracing.com
joe@cordesperformanceracing.com
480-359-5914
Thread Starter
Safety Car
Joined: Nov 2005
Posts: 4,364
Likes: 934
From: Huntsville Alabama
I will be using a very good tuner. Have trusted him with many big builds. LTx DI stuff as well.
what size pulley should I order to have in hand? 4.25 currently. I am not worried about the boost number as I am the power level. 650-700 is fine for this daily. Just plan for a cam & headers (car sounds so strange to me right now with cats & stock cam been DD cammed LS/LT for 20 years not ha) the cam will help bump fuel, & headers just because so not sure what to plan for if that's the range looking. Dyno & tuner will be lined up so don't want to have to come back later with another pulley. Ect. Want to have it all on hand & be done. Can return a pulley or sell if need be.
what size pulley should I order to have in hand? 4.25 currently. I am not worried about the boost number as I am the power level. 650-700 is fine for this daily. Just plan for a cam & headers (car sounds so strange to me right now with cats & stock cam been DD cammed LS/LT for 20 years not ha) the cam will help bump fuel, & headers just because so not sure what to plan for if that's the range looking. Dyno & tuner will be lined up so don't want to have to come back later with another pulley. Ect. Want to have it all on hand & be done. Can return a pulley or sell if need be.
Thread Starter
Safety Car
Joined: Nov 2005
Posts: 4,364
Likes: 934
From: Huntsville Alabama
Also if I don't do a cam & just do headers, real tune. I assume I will run out of fuel around 600. So what pulley should I be looking for & where can it end up with just blower & headers?
Team Owner
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Thread Starter
Safety Car
Joined: Nov 2005
Posts: 4,364
Likes: 934
From: Huntsville Alabama
LS9 MAP Sensor, 1-7/8th Headers, Off road X, and Plugs on order.
Going to probably get some plug wires as A&A says they see stock ones fail/ issues. What pulley size to shoot for 600 with headers and blower only?
Going to probably get some plug wires as A&A says they see stock ones fail/ issues. What pulley size to shoot for 600 with headers and blower only?
Former Vendor
Joined: Sep 2016
Posts: 1,397
Likes: 267
From: Houston Texas
Do a set of drop in piston when you do the cam. We don't push the stock LT1 pistons past 600 wheel also you will need to go to a LT4 pump and injectors.
Billy
Billy
I picked up this C7 a few weeks ago. Its basically a bone stock LT1 with Procharger kit on it. 4.25" pulley, stock Canned tune from Procharger on it. I plan to dyno it this week to have a baseline. expect mid 500s how it sits.
Planning to add headers, Off road X, and a DOD delete cam. (BTR Stage 2 LT1/4 Supercharger cam to be exact)
Few questions. I know 700rwhp seems to be the limit on the stock pistons (Some say 600). Where does everyone think this set up will land HP wise? Will I need to change the pulley to make up for the headers/cam? I have never added headers to a car that was already blown, normal the other way areound. Or do I allow the boost level to drop with the beter flowing combo and see where power raises to? Is this 700 limit normally when using boost only to get there, or the same with headers, and cam, and lower boost? I don't track the car, drive it on street and some spirited pulls or tire spinning is about it.
Any thoughts on this are welcome.
My last BTR stage 2 cam in a C7/LT1 made 505 rwhp NA. so I would assume similar cam, headers, and low boost should add the same 160-180 HP on top bringing it close to 700 mark?
Planning to add headers, Off road X, and a DOD delete cam. (BTR Stage 2 LT1/4 Supercharger cam to be exact)
Few questions. I know 700rwhp seems to be the limit on the stock pistons (Some say 600). Where does everyone think this set up will land HP wise? Will I need to change the pulley to make up for the headers/cam? I have never added headers to a car that was already blown, normal the other way areound. Or do I allow the boost level to drop with the beter flowing combo and see where power raises to? Is this 700 limit normally when using boost only to get there, or the same with headers, and cam, and lower boost? I don't track the car, drive it on street and some spirited pulls or tire spinning is about it.
Any thoughts on this are welcome.
My last BTR stage 2 cam in a C7/LT1 made 505 rwhp NA. so I would assume similar cam, headers, and low boost should add the same 160-180 HP on top bringing it close to 700 mark?
Instructor
Joined: Jan 2021
Posts: 155
Likes: 23
From: CT
if you plan on doing a cam then the heads and oil pan have to come off unless you plan on not changing the timing chain then the pan can stay on
Thread Starter
Safety Car
Joined: Nov 2005
Posts: 4,364
Likes: 934
From: Huntsville Alabama
But I think current plan is to di headers, and pulley it to 600 and see what I think. Not sure how long I will keep it so cam may be too deep as after 600 start needed meth, and cam, and then we are pushing pistons... ect.. But what pulley for 600 with headers?
Last edited by mittens; Jan 13, 2022 at 10:12 AM.
