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My next project.

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Old 05-17-2018, 08:37 AM
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My next project.

Picked up this yesterday. 70k mi, PO said it ran strong w/ no smoke. Said he believed it to have some package on it that included headers, upgraded fuel injection parts, and cam? What I can see is the siamesed runners and slp headers which were in rough shape banged up from swap I suppose. Engine was swapped out for a newer model Corvette LS. My plans are to refreshen it, find out what cam is in there and if I want it or not, and put an upgraded TBI system on it and into my red bird.

It may also get a set of Vortecs depending on what these heads look like. May be spring before I get to it. Very excited I'm not building a race car just something hopefully 75-100hp over my lil 305.
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Old 05-17-2018, 01:33 PM
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Re: My next project.

It's an 87 engine. Judging from the oil cooler, it should be a good 'un. I'd rip the smog pump crap off, and sell the one year only accessory drive setup, bolt on the serp setup from your TBI engine, and convert the TBI harness to work with TPI. It's too easy to convert a TBI car, and it'd be a nice swift kick in the *** of performance just the way it is. 70K she ain't even broke in yet!

Do it to it, Amigo!
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Old 05-17-2018, 03:07 PM
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Re: My next project.

Id love to swap to TPI but that may be too much of a headache for me. Then again I would love that setup I just don't know if I have the patience or time. Nothing looks cooler to me than that setup under a hood for sure. I will probably end up selling the TPI setup, I already have another 87 setup in a box somewhere from my last TA but its doesn't have siamesed runners.
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Old 05-17-2018, 03:59 PM
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Re: My next project.

Nice score Dustin! IF by chance you decide to "86" (get rid of) the TPI Setup, Runners and all....put me first on the list. Even the headers, please!
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Old 05-17-2018, 04:14 PM
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Re: My next project.

Originally Posted by Bob88GTA View Post
Nice score Dustin! IF by chance you decide to "86" (get rid of) the TPI Setup, Runners and all....put me first on the list. Even the headers, please!
I told you before id talk to you first if I did Bob and I'm a man of my word. Headers are junk. Luckily I have a set of hookers stashed back.
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Old 05-17-2018, 04:26 PM
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Re: My next project.

Swapping in that TPI would be easy. Change the pump in the tank, the rest of the fuel lines are the same all the way to the fuel lines on the engine. You'd need the two stubby lines and bracket from a serpentine car. Cap and plug the CSI. Wire it up as an 89 MAF or 7730 MAP. Swing the battery to the driver's side and wire it up. Hardest part is probably finding the PROM, the rest is really just a matter of labor.

Tooooooned Port. Tooooooned Port. It just rolls of the tongue.
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Old 05-17-2018, 04:27 PM
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Re: My next project.

I know, And thank you!
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Old 05-17-2018, 04:32 PM
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Re: My next project.

Originally Posted by Drew View Post
Swapping in that TPI would be easy. Change the pump in the tank, the rest of the fuel lines are the same all the way to the fuel lines on the engine. You'd need the two stubby lines and bracket from a serpentine car. Cap and plug the CSI. Wire it up as an 89 MAF or 7730 MAP. Swing the battery to the driver's side and wire it up. Hardest part is probably finding the PROM, the rest is really just a matter of labor.

Tooooooned Port. Tooooooned Port. It just rolls of the tongue.
While it does look cool.. the most I ever fought a car was with a TPI and I eventually jerked it out and went carb. So far I haven't had to touch the TBI. It has been incredibly reliable, trouble-free, and underwhelming as well. Lol
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Old 05-17-2018, 04:52 PM
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Re: My next project.

I would go for the aftermarket TBI set up form Holley msd FIT etc they are getting much cheaper now and you can run any 4 barrel intake with them and air cleaner prime low hassle set up for a SBC .
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Old 05-17-2018, 06:44 PM
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Re: My next project.

Been looking at some SPR performance packages.
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Old 05-17-2018, 09:49 PM
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Re: My next project.

Originally Posted by dmccain View Post
While it does look cool.. the most I ever fought a car was with a TPI
Was it MAF? Because my Iroc drove me crazy, while my Formula has run beautiful with all kinds of self inflicted issues that should have kept it from driving.
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Old 05-17-2018, 11:38 PM
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Re: My next project.

Yes, 87 MAF car. My 91 SD car was less problematic for sure.
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Old 06-01-2018, 04:24 PM
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Re: My next project.


Bought a new engine stand and got her perched up there. Also got some new torx bits and started removing some things last night. But mainly just drank beer and looked at it. Lol. 95deg here now and after working 12hr days I'm not feeling like doing too much at this point. Just a lil at a time. I'm very excited though and going back in forth in my head whether to leave the 083s alone or go with some Vortecs like my last build.
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Old 06-01-2018, 04:31 PM
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Re: My next project.

Does anyone know the specs on the SLP cam or cams the dealerships put in the SLP packages back in the day. I don't know for sure because I haven't pulled it yet but "supposedely" this engine has one. It did have a lil bark to it so hopefully I can find out some specs and I don't have to discard the mystery cam. I do have a low mileage 049 GM cam I thought about using if it comes down to it. I'm not wanting a drag car just a strong cruiser. Something to maybe discourage pickup trucks and minivans from embarrassing me anyhow.
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Old 06-04-2018, 11:46 PM
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Re: My next project.

Got the TPI off today. Engine looks very clean. Was too tired and greasy to take any pics. I'm ready to find out what cam is in there. Don't know how much more progress i will make for a while I go tomorrow to see what they are going to do with my fractured hip. It's been nagging me awhile i need get my hip rebuilt first. Then the L98.
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Old 06-04-2018, 11:56 PM
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Re: My next project.

Get out the dial indicator and magnetic base, and measure the lift. I'm sure someone has an old Summit catalog or SLP catalog with their cam specs. I probably have them somewhere... Might be easier to pull the cam gear and look for a number on the cam snout.
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Old 06-05-2018, 06:15 PM
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Re: My next project.

Tony sent me an old link to an SLP parts catalog with the different cams along with #s. Thanks!
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Old 09-22-2018, 05:53 PM
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Re: My next project.

So, I'm going to run TBI on this engine and put in a stock TPI GM#049 cam. Should I bore the TBI and intake to 50mm or would the stocker with its 42mm bore maybe with ultimate tbimods be ok for this engine? Would 50mm be overkill i guess is my question?
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Old 10-25-2018, 07:43 AM
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Re: My next project.

id consider running the ebl... https://w
ww.thirdgen.org/forums/diy-prom/356351-tuning-ebl.html
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Old 10-25-2018, 08:29 AM
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Re: My next project.

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Old 10-25-2018, 09:26 AM
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Re: My next project.

Glad to see your project moving forward Dustin! The TPI Set up cleaned up super and gathering for my build as well! Thanks!

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Old 10-25-2018, 11:42 PM
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Re: My next project.

Those runners cleaned up well Bob. Hopefully I can get off these crutches soon and start fooling with my engine. Can't even put my dang shoe on by myself at this point so getting Zero done here for now.
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Old 11-07-2018, 10:50 AM
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Re: My next project.


Wanted to stay with the stock TBI intake so a friend of mine here on these boards did some excellent work boring this one out for me and making it look great. Thanks Robert
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Old 11-07-2018, 10:51 AM
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Old 11-07-2018, 10:59 AM
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Old 11-07-2018, 11:16 AM
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Re: My next project.

Ive also been doing some work on this one and neglecting the Pontiac lately as my sons studies for his driving permit in January this will be his birthday present.
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Old 11-07-2018, 11:25 AM
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Re: My next project.

Nice Birthday gift!!!
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Old 11-08-2018, 11:00 AM
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Re: My next project.

What did you guys use to clean, strip, blast, paint, coat, etc. etc. those parts. Both the runners and plenum, TPI manifold and the TBI manifold all look great. I've found several different paints and coatings that look great, but that brand new cast appearance has eluded me thus far!
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Old 11-08-2018, 11:21 AM
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Re: My next project.

I used Eagle 1 Aluminum Wheel Etching Cleaner and Car Brite White Lighting Acid and wire brushing and soaking.
WEAR CHEMICAL GLOVES AND GOGGLES!!!!!!
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Old 11-08-2018, 11:55 AM
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Re: My next project.

I followed Bob’s advice and used the Eagle One etching cleaner on my SLP runners, Big Mouth and plenum. Man, that stuff is strong! Followed it up with Duplicolor Cast Coat Aluminum DE1650 and I’m very pleased. Will get some pics once I finish with the brown truck.
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Old 11-08-2018, 12:33 PM
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Re: My next project.


Big transformation Bob! Great job.
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Old 11-08-2018, 12:36 PM
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Old 11-08-2018, 12:48 PM
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Re: My next project.

Thanks Dustin!
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Old 11-09-2018, 07:25 AM
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Re: My next project.

Thanks guys!
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