what size of fuel injectors to go with
Thread Starter
Teching In
Joined: Aug 2010
Posts: 49
Likes: 0
From: coal city, il
what size of fuel injectors to go with 1999 camaro z28 heads cam car
heads patriot ls6 5.7- stage 2 (2.055/1.57/59cc)
gm multi-layer steel ls1/ls6 cylinder head gasket
arp ls1 hex head bolt kit
oil pump/timing chain package, 1998-02 ls1 heavy-duty
gm ls1 header gasket pair
gm ls1 front cover gasket
gm ls1 front crank seal
crankshaft (harmonic balancer) bolt
gm ls6 intake manifold w/adapters, non- egr
speed inc. 5 cam (231/237 .589 .595 112)
pace setter lt headers 3in
comp high energy roller lifters
comp high energy 7.400 pushrods chrome moly
bmr 93-02 fbody hardtop tubular low clearance subframe
yank ss4000 stall converter
b&m 2400 gvw tans cooler
100-250 phantom elec trans temp
dmh 3" cutout
umi adj. transmounted torque arm
umi torque arm relocation bracket
umi lower control arm relocation brackets
umi single adj. lower control arms
qa1 complete package deal 300 lb spring
weld prostar 15x10 rear with 28' mt et streets
weld prostar 15x3.5 front wit 26' mt front runners
heads patriot ls6 5.7- stage 2 (2.055/1.57/59cc)
gm multi-layer steel ls1/ls6 cylinder head gasket
arp ls1 hex head bolt kit
oil pump/timing chain package, 1998-02 ls1 heavy-duty
gm ls1 header gasket pair
gm ls1 front cover gasket
gm ls1 front crank seal
crankshaft (harmonic balancer) bolt
gm ls6 intake manifold w/adapters, non- egr
speed inc. 5 cam (231/237 .589 .595 112)
pace setter lt headers 3in
comp high energy roller lifters
comp high energy 7.400 pushrods chrome moly
bmr 93-02 fbody hardtop tubular low clearance subframe
yank ss4000 stall converter
b&m 2400 gvw tans cooler
100-250 phantom elec trans temp
dmh 3" cutout
umi adj. transmounted torque arm
umi torque arm relocation bracket
umi lower control arm relocation brackets
umi single adj. lower control arms
qa1 complete package deal 300 lb spring
weld prostar 15x10 rear with 28' mt et streets
weld prostar 15x3.5 front wit 26' mt front runners
Banned
Joined: Jun 2010
Posts: 149
Likes: 1
From: Braselton,Ga
I no for a fact your going to have a PTV issue with the cam you have listed and the 59cc heads with 2.05 intake valve,,,,,,,,,Reason I know is because I have 64cc 243 heads with 2.055 intake valves and after measuring PTV I couldn't use a 232 intake duration like I wanted to.
Ignore the above if your going to cut valve reliefs into your factory pistons.
Also I went with GM White injectors,,,they are 42lb behind the LS1 fuel pump.
Also I went with a 228 intake duration to keep from having PTV issues with my factory pistons.
Ignore the above if your going to cut valve reliefs into your factory pistons.
Also I went with GM White injectors,,,they are 42lb behind the LS1 fuel pump.
Also I went with a 228 intake duration to keep from having PTV issues with my factory pistons.
I no for a fact your going to have a PTV issue with the cam you have listed and the 59cc heads with 2.05 intake valve,,,,,,,,,Reason I know is because I have 64cc 243 heads with 2.055 intake valves and after measuring PTV I couldn't use a 232 intake duration like I wanted to.
Ignore the above if your going to cut valve reliefs into your factory pistons.
Also I went with GM White injectors,,,they are 42lb behind the LS1 fuel pump.
Also I went with a 228 intake duration to keep from having PTV issues with my factory pistons.
Ignore the above if your going to cut valve reliefs into your factory pistons.
Also I went with GM White injectors,,,they are 42lb behind the LS1 fuel pump.
Also I went with a 228 intake duration to keep from having PTV issues with my factory pistons.
what was the complete specs on the cam you were going to run?
i am running an lq9 with tea stg3 heads milled .020 so should be about 59ccs and have the same valves as the OP, and i was actually speced out a slightly bigger cam by patrick G and he does this stuff for a living. with the cam he speced out i would still have .070 ptv clearance
Banned
Joined: Jun 2010
Posts: 149
Likes: 1
From: Braselton,Ga
Kliped
Well if you pay me like you paid him then I will tell you my cam specs
Anyways I tried to get free PTV info on 243 heads with 2.055 intake valves from the fine members here on LS1tech with everyone obviously telling me I needed to measure PTV.
I called a extremely reputable LS1tech sponsor about my heads and factory LS1 bottom end and a 232 XER lobe and the sponsor obviously said I needed to measure ,but without measuring he thought PTV would be extremly close with the 2.055 intake valve with .051 MLS headgasket.
So I just went on and pulled my motor and let the guy that did the work to my heads measure my PTV and this was the best duration we felt was good.Best of all I didn't have to pay him a dime for the PTV measurement and cam spec,,,,but then agian I have known him for along time.
Also I would like to add that some companies sink the valve seats deeper in the heads when they install the larger valve seats to create more PTV. I don't know if TEA does this ,but that could also be playing a role in your cam specs compared to mine. I personally think sinking the valve seats deeper than factory is a bad pratice. Which my valve seats are not sunk deeper than factory.
Lastly I know some people have PTV issues with milled factory 2.0 intake valved heads when using TSP's MS3 and MS4 cams when using the factory pistons.
Hope this helps
Well if you pay me like you paid him then I will tell you my cam specs
Anyways I tried to get free PTV info on 243 heads with 2.055 intake valves from the fine members here on LS1tech with everyone obviously telling me I needed to measure PTV.
I called a extremely reputable LS1tech sponsor about my heads and factory LS1 bottom end and a 232 XER lobe and the sponsor obviously said I needed to measure ,but without measuring he thought PTV would be extremly close with the 2.055 intake valve with .051 MLS headgasket.
So I just went on and pulled my motor and let the guy that did the work to my heads measure my PTV and this was the best duration we felt was good.Best of all I didn't have to pay him a dime for the PTV measurement and cam spec,,,,but then agian I have known him for along time.
Also I would like to add that some companies sink the valve seats deeper in the heads when they install the larger valve seats to create more PTV. I don't know if TEA does this ,but that could also be playing a role in your cam specs compared to mine. I personally think sinking the valve seats deeper than factory is a bad pratice. Which my valve seats are not sunk deeper than factory.
Lastly I know some people have PTV issues with milled factory 2.0 intake valved heads when using TSP's MS3 and MS4 cams when using the factory pistons.
Hope this helps
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Kliped
Well if you pay me like you paid him then I will tell you my cam specs
Anyways I tried to get free PTV info on 243 heads with 2.055 intake valves from the fine members here on LS1tech with everyone obviously telling me I needed to measure PTV.
I called a extremely reputable LS1tech sponsor about my heads and factory LS1 bottom end and a 232 XER lobe and the sponsor obviously said I needed to measure ,but without measuring he thought PTV would be extremly close with the 2.055 intake valve with .051 MLS headgasket.
So I just went on and pulled my motor and let the guy that did the work to my heads measure my PTV and this was the best duration we felt was good.Best of all I didn't have to pay him a dime for the PTV measurement and cam spec,,,,but then agian I have known him for along time.
Also I would like to add that some companies sink the valve seats deeper in the heads when they install the larger valve seats to create more PTV. I don't know if TEA does this ,but that could also be playing a role in your cam specs compared to mine. I personally think sinking the valve seats deeper than factory is a bad pratice. Which my valve seats are not sunk deeper than factory.
Lastly I know some people have PTV issues with milled factory 2.0 intake valved heads when using TSP's MS3 and MS4 cams when using the factory pistons.
Hope this helps
Well if you pay me like you paid him then I will tell you my cam specs
Anyways I tried to get free PTV info on 243 heads with 2.055 intake valves from the fine members here on LS1tech with everyone obviously telling me I needed to measure PTV.
I called a extremely reputable LS1tech sponsor about my heads and factory LS1 bottom end and a 232 XER lobe and the sponsor obviously said I needed to measure ,but without measuring he thought PTV would be extremly close with the 2.055 intake valve with .051 MLS headgasket.
So I just went on and pulled my motor and let the guy that did the work to my heads measure my PTV and this was the best duration we felt was good.Best of all I didn't have to pay him a dime for the PTV measurement and cam spec,,,,but then agian I have known him for along time.
Also I would like to add that some companies sink the valve seats deeper in the heads when they install the larger valve seats to create more PTV. I don't know if TEA does this ,but that could also be playing a role in your cam specs compared to mine. I personally think sinking the valve seats deeper than factory is a bad pratice. Which my valve seats are not sunk deeper than factory.
Lastly I know some people have PTV issues with milled factory 2.0 intake valved heads when using TSP's MS3 and MS4 cams when using the factory pistons.
Hope this helps
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Joined: Jun 2010
Posts: 149
Likes: 1
From: Braselton,Ga
Also for the OP I had my computer flashed by Vengeance last Thursday so I could drive my car around to make sure everything is ok. The car runs great and idles great and i'm using the GM white 42lb injectors and I bought mine from Katech for $239.00 for the set of 8.
Hopefully I will be getting it dyno tuned next week if Vengeance has an opening.
Hopefully I will be getting it dyno tuned next week if Vengeance has an opening.
Thread Starter
Teching In
Joined: Aug 2010
Posts: 49
Likes: 0
From: coal city, il
Well speed Inc. Build the motor an tuned it. But I think the car needs injectors tho.and it has a stock rearend. In the car. I think I am going to put a 390 motive gear in it with a 28 " et street tire.is that a Good or bad. What does peeps think
Last edited by spotme03please; Aug 16, 2010 at 06:19 PM.
Banned
Joined: Jun 2010
Posts: 149
Likes: 1
From: Braselton,Ga
I personally wouldn't spend any money on that 10bolt,,reason I say this is because you should be making over 400hp to the wheels.
There is people on here claiming to be making 430hp to the wheels with an A4 that are using the factory 10bolt with the factory 3.23 gear and 28" slicks with 1.57 60ft times.
I personally have never seen a factory 7.5 10bolt with stand that kinda of HP along with launching that hard and the 10bolt not fail.
You might get away with it for several passes ,but it's not going to last long.
I too will have to invest in a stronger rearend.
There is people on here claiming to be making 430hp to the wheels with an A4 that are using the factory 10bolt with the factory 3.23 gear and 28" slicks with 1.57 60ft times.
I personally have never seen a factory 7.5 10bolt with stand that kinda of HP along with launching that hard and the 10bolt not fail.
You might get away with it for several passes ,but it's not going to last long.
I too will have to invest in a stronger rearend.
Thread Starter
Teching In
Joined: Aug 2010
Posts: 49
Likes: 0
From: coal city, il
Yea I make over 400.I think I am going to look for a 9" with a like 390 so I can still drive it on the street. I need to get the slp traction control. Switch so I can spin the tires
Banned
Joined: Jun 2010
Posts: 149
Likes: 1
From: Braselton,Ga
I'm a M6 and I'm going to trailer mine to the track to see what gear I am in crossing the 1/4 mile mark before I decide what rearend gear I want to go with.
Reason for trailering it is if the factory 10bolt doesn't hold up.
Also have you upgraded your A4 yet?
Reason for trailering it is if the factory 10bolt doesn't hold up.
Also have you upgraded your A4 yet?
Thread Starter
Teching In
Joined: Aug 2010
Posts: 49
Likes: 0
From: coal city, il
Yea I just bought the car for 6000.00 .the kid that had said it has the stock rearend an stock gear an went 12.2 with bad traction. And the suspension not set up. An yesterday I Pope's out the honey cone on the MAF and is polishing that and the TB
Also for the OP I had my computer flashed by Vengeance last Thursday so I could drive my car around to make sure everything is ok. The car runs great and idles great and i'm using the GM white 42lb injectors and I bought mine from Katech for $239.00 for the set of 8.
Hopefully I will be getting it dyno tuned next week if Vengeance has an opening.
Hopefully I will be getting it dyno tuned next week if Vengeance has an opening.
Banned
Joined: Jun 2010
Posts: 149
Likes: 1
From: Braselton,Ga
They are actually 38lb injectors,but when they are behind the LS1 fuel pump they become 42lb.
GM part number 24508208.
I bought them from Katech for $239.92 plus shipping.Katech still has them for sale on ebay.
GM part number 24508208.
I bought them from Katech for $239.92 plus shipping.Katech still has them for sale on ebay.