Trlrider
OBS Enthusiast
Morning all!
In the process of pulling the stock 5.7 tbi out of the Suburban and putting a nearly new GM Crate engine in it. The stock 5.7 tbi engine runs okay, but oil pressure is getting lower then I like and instead sinking money into it with crappy heads on top and unknown mileage, decided to put my new crate in it. The original owner loved Pennzoil for some reason and the engine showed it. Despite recorded oil changes every 3500 miles (according to the trucks ledger) it was still sludged up from top to bottom when I got it.
The Crate is the standard GM 10067353. Only 10k on it since it was installed in my K5 a few years ago. The K5 was totaled last March thanks to a idiot that choose not to yield right of way at a intersection.
Going into the '93 K1500 Suburban the 5.7 crate 10067353 is will have:
Untouched heads (882) and original cam for the time being. The cam is not much different from the TBI cam. Just better heads and Intake.
4BBL to TBI adapter: Painless Performance TBI Adapter 60118 (choose this one because I did not want warping issues) Intake has been been opened slightly to make the openings in the spacer.
Spacer: A Taylor Helix Power Tower (was under the TBI already in the truck. Actually noticed a improved fuel mileage when it was installed.
Headers: 1 5/8 shorty's for the time being.
Exhaust: stock Y-pipe (for now) CAT was gone long before I purchased the truck.
Transmission: Original 4L60E - unknown mileage for now. I have a new Monster Transmission 700R4 coming out of the K5 that may find it's way into the Sub eventually.
ECU: 16168625 with a BLCP marked memcal
I do not expect any major hurdles regarding the tune getting it in and running this weekend if I get all the sensors in the correct place and the initial timing correct.
My biggest concern is the better intake, head combination with the stock TBI and fuel ratio's.
Here is the Question:
Does anyone see a reason why the MAP sensor and O2 would not be able to adjust accordingly for the short term until some logging can be done and a new chip burned?
Have been studying TBI for months, but still not sure how smooth this will work for initial startup.
Not looking for a powerhouse stump puller, just a solid DD with somewhat decent economy for a big tank like the K1500 Sub!|
Once the base swap is done and smoothed out, will more then likely install a better cam and Vortec heads (on the bench)! A new fuel pump is also in the cards, as I have no idea at what point this one was replace. The Original owner (I am the 2nd Owner) of the truck knew he had it replaced, but did not remember the mileage. The engine had been rebuilt at some point also, and again, no one knows at what mileage. The odometer shows it has 365k on the chassis.
Thanks!
In the process of pulling the stock 5.7 tbi out of the Suburban and putting a nearly new GM Crate engine in it. The stock 5.7 tbi engine runs okay, but oil pressure is getting lower then I like and instead sinking money into it with crappy heads on top and unknown mileage, decided to put my new crate in it. The original owner loved Pennzoil for some reason and the engine showed it. Despite recorded oil changes every 3500 miles (according to the trucks ledger) it was still sludged up from top to bottom when I got it.
The Crate is the standard GM 10067353. Only 10k on it since it was installed in my K5 a few years ago. The K5 was totaled last March thanks to a idiot that choose not to yield right of way at a intersection.
Going into the '93 K1500 Suburban the 5.7 crate 10067353 is will have:
Untouched heads (882) and original cam for the time being. The cam is not much different from the TBI cam. Just better heads and Intake.
4BBL to TBI adapter: Painless Performance TBI Adapter 60118 (choose this one because I did not want warping issues) Intake has been been opened slightly to make the openings in the spacer.
Spacer: A Taylor Helix Power Tower (was under the TBI already in the truck. Actually noticed a improved fuel mileage when it was installed.
Headers: 1 5/8 shorty's for the time being.
Exhaust: stock Y-pipe (for now) CAT was gone long before I purchased the truck.
Transmission: Original 4L60E - unknown mileage for now. I have a new Monster Transmission 700R4 coming out of the K5 that may find it's way into the Sub eventually.
ECU: 16168625 with a BLCP marked memcal
I do not expect any major hurdles regarding the tune getting it in and running this weekend if I get all the sensors in the correct place and the initial timing correct.
My biggest concern is the better intake, head combination with the stock TBI and fuel ratio's.
Here is the Question:
Does anyone see a reason why the MAP sensor and O2 would not be able to adjust accordingly for the short term until some logging can be done and a new chip burned?
Have been studying TBI for months, but still not sure how smooth this will work for initial startup.
Not looking for a powerhouse stump puller, just a solid DD with somewhat decent economy for a big tank like the K1500 Sub!|
Once the base swap is done and smoothed out, will more then likely install a better cam and Vortec heads (on the bench)! A new fuel pump is also in the cards, as I have no idea at what point this one was replace. The Original owner (I am the 2nd Owner) of the truck knew he had it replaced, but did not remember the mileage. The engine had been rebuilt at some point also, and again, no one knows at what mileage. The odometer shows it has 365k on the chassis.
Thanks!
