If I got a ZZ4 and put an LT1 intake on it... what would I need?

Plenum, TB, MAF, computer and wiring?

Could I reuse anyhting off of my TPI? How much does a used LT1 intake go for and how comparable is it to a miniram?

------------------
1989 Chevrolet Camaro IROC-Z
L98 - 350c.i. TPI, rebuilt 700R4 auto w/shift kit, Dual catalyst Monza PaceSetter Cat-Back, SLP 1 5/8 Coated Headers, 3.23 Posi rear, Hypertech Thermomaster chip with 160stat, MSD 6A, March Under-Drive pulleys, AFPR, K&N's, !Air Box w/ Ram Air, moddified MAF, !TB Coolant, Spohn Dual Cat SubFrame Connectors, Alarm, Keyless entry, remote starter, 92 Z28 AeroWing, Brand New Paint (6/21/01)

Future: ZZ4 TPI w/EGR, T56, 3.42 or 3.73, Spohn strut tower brace and LCA's, Accell Universal 24# injectors

More info and pics on my webpage:http://go.to/iroc-z

AOL IMer: GPA 0point0

 

You will need a list of things. I assume you have read my tech write-up.
http://members.home.net/millicanga/s...into_a_1st.htm

You say you already have TPI? Your 80% there already. All you really need to swap is the LT1 intake and fuel rails, custom fuel lines, remote thermastat/hoses, 87+ distributor with remote coil and probally a prom burn.
You can re-use your injectors, wire harness, computer, throttle body and cable.


------------------
86 Camaro Sport
LT1 Induction
383 Speed-O-Motive Crate Engine, Raptor 700R4 Tranmission, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Hooker Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project
Moderator at SE ThirdGen

 

I read your article and was very impressed. I've always wanted to do this just wasn't ever sure if it would be possible. The one thing that I still wonder about is the intake ports. Do the LT1 ports match up perfectly with the ports on the cylinder heads? Also, what about an LT4 intake conversion? Do you know if it will work also? I know the ports are raised .1" higher on the LT4 manifold than on the LT1 intake. Do you happen to know if either of these intakes would match up better to the Vortec style cylinder heads?

Thanks,
Stephen

------------------
1991 Z28 - 350 TPI, T56, McLeod street clutch, LT4 pressure plate, Pro 5.0 shifter, ported plenum & runners, AFPR, Hooker shorty headers w/o AIR, Flowmaster muffler, homeade ram-air, SSM subframe connectors, Kenny Brown STB, Global West steering box brace, Steve Spohn adjustable torque arm and T56 crossmember

 

Yes, the intake ports line up exactly to the stock intake gasket which fit my heads perfectly(1986 TF G2 heads)
I probably stay away from the LT4 intake since everyone says it only fits the LT4 heads. I assume the intake ports are higher which would require you to pull and match your heads to fit that intake.
The vortec heads question is still under debate last time I checked. My friend just got some vortec's and I am expecting a LT1 intake to be sent to me for mod so I will check it out personally.

 

Do you know when you might know more about the LT4 intake and the Vortec heads? I'm not trying to rush you or anything it's just that I'll be getting a new motor soon and am very interested in doing this conversion. Hopefully the Vortec heads will match the LT4 intake nicely. Let me know.

Thanks,
Stephen

 

I'd think that the LT4 intake might be a better match for the fastburn heads.

Does the LT4 intake have an EGR, or not, since it's a 'vette piece?

 

I won't have a LT4 intake so I won't be able to make that comparason.

 

Oh ok I must've read your post wrong. I have another question though. Does water actually flow through the front of the intake? If it did couldn't you tap into the front of the manifold under the throttle body? If not, I guess what you did was tap through the intake straight into the water passages in the head? Sorry for all the questions but I'm really considering doing the LT4 intake with Vortec or Fast Burn cylinder heads.

Thanks,
Stephen

 

I looked in to using the lt4 intake and this is what I found the lt1 intake ports are the same sise as the standered chevy ports but you new that the lt4 ports are .10 larger then the lt1 ports the vortec heads are .20 larger then the lt1 ports but the lt4 does have a little room to spair around the ports and and you should be able to port mach them to fit I have an lt1 intake for sale if I can sell it I will then buy the lt4 intake to try this but I have the SDPC base and slp runners on my car know and would hate to just take it all off and try the lt4 set up so I have to sell the lt1 intake first or find some one that will buy the lt4 and trade it to me for the lt1 intake and some cash I dont have the fuil rails just the TB and intake and a set of 22lb injectors. But if some one could make me an offer I would spend the extra cash to let every one know if it will work or not.

------------------
87gta 355 fastburn heads,slp headers,flowmaster exhaust, LT4 hot cam and a lot more

 

Stephen,
Water does not actually flow through my LT1 intake. The aera behind the TB is an empty viod open to the lifter valley.
Your riht, I tapped right through the intake to line up straight with the water ports on the head. I chose the front but could have tapped through the rear also.

 

Can you supply the part numbers to the fittings that you used for the fuel lines. We don't have a pep boys up here in des moines IA. Also what was the place you took your lines to? Yeah we have shops that can do that stuff but they don't know there a_ses from a hole in the ground if you know what I mean. THat is the biggest problem that I have, getting the fuel lines.

------------------
89 Iroc 350 TPI,
Forged pistions
Comp roller Cam .510 lift 230dur
Flowmaster exhaust
Dart Iron Eagle heads 200cc runners 64cc chambers
LT1 intake soon...if I can find one!!!
stock TPI for now 24# inj
87 Trans Am GTA 350 TPI
had engine fire
SHE NOW RUNS!!!!
Flowmaster exhaust
LT1 Injectors
LT1 intake also if I can find one!!

 

Also, what about all the vacuum line fittings? Will any of the TPI ones be able to be reused or did you need to buy all new ones. And what is that large hole on the driver side of the intake? Is that for a vacuum fitting? What did you do to block it off? Is there a place to attach the larger fitting for the power brake booster vaccum line?

 

Yes, you can use your vacuum fittings from the TPI. Gesh, they're only pipe thread. Next you'll ask if you can use the TPI intake bolts. j/k
As far as the large hole on the drivers side intake, it said in the write-up it was for the PCV valve. I used it.

 

Steve, I'll have to go to PepBoys and get the numbers off the LT1 fuel fittings. I get back to you.

 

Have you found out the part numbers to the fuel fittings yet? just a wondering.


------------------
89 Iroc 350 TPI,
Forged pistions
Comp roller Cam .510 lift 230dur
Flowmaster exhaust
Dart Iron Eagle heads 200cc runners 64cc chambers
LT1 intake soon...if I can find one!!!
stock TPI for now 24# inj
87 Trans Am GTA 350 TPI
had engine fire
SHE NOW RUNS!!!!
Flowmaster exhaust
LT1 Injectors
LT1 intake also if I can find one!!

 

Man, is this the worlds longest run-on sentence or what!? Periods help distinguish sentences Earl baby!

------------------
'91 Z28 1LE; 355, Sportsman II heads, Edelbrock TPI w/ 58mm TB, Tremec TKO 5-speed, 3.73's & much, much more

 

Do you experience any overheating problems? Those 3/4" hoses seem awful small to me compared to the normal one

 

No, no problems with overheating. And about the 3/4" hoses, they are the same size as the coolant outlet of each head and go right to the thermastat where they meet the large upper radiator hose which is stock cut down.
Exactly the same as the stock system was designed.

 

Have you found out the part #'s to the fuel fittings?

------------------
89 Iroc 350 TPI,
Forged pistions
Comp roller Cam .510 lift 230dur
Flowmaster exhaust
Dart Iron Eagle heads 200cc runners 64cc chambers
LT1 intake soon...if I can find one!!!
stock TPI for now 24# inj
87 Trans Am GTA 350 TPI
had engine fire
SHE NOW RUNS!!!!
Flowmaster exhaust
LT1 Injectors
LT1 intake also if I can find one!!

 

PepBoys part numbers to the LT1 fuel fittings. $9.99 each.

5/16" connector 0-19495-02629

3/8" connector 0-19495-02630

 

I think I am screwed. I had purchased a LT1 intake thinking that it is 94 or newer. Wrong it is a 93 i think. On the fuel rails it does not have the crossover in the front of the intake. The line that goes dagonaly across the intake to tie the fuel rails together. Can I mate a newer fuel rail setup t this or should I find a new intake. It lookslike that the distributer will not fit the crossover lines are in the way from the fuel rail. PLEASE HELP

------------------
89 Iroc 350 TPI,
Forged pistions
Comp roller Cam .510 lift 230dur
Flowmaster exhaust
Dart Iron Eagle heads 200cc runners 64cc chambers
LT1 intake soon...if I can find one!!!
stock TPI for now 24# inj
87 Trans Am GTA 350 TPI
had engine fire
SHE NOW RUNS!!!!
Flowmaster exhaust
LT1 Injectors
LT1 intake also if I can find one!!

 

See if you can get me some good close up pics of the rear with the rails attached as I have never seen a '93 intake except from far away. I know the close aera and may be able to help.
Also you cannot use a newer fuel rail on the '93 intake.
If you were to go aftermarket steel braided fuel lines and remote pressure regulator you could for sure use the '93 setup.

E-mail me direct the pics, no matter how large.


------------------
86 Camaro Sport
LT1 Induction
383 Speed-O-Motive Crate Engine, Raptor 700R4 Tranmission, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Hooker Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project
Moderator at SE ThirdGen

 

Are any of you guys with LT1 intakes able to use a Strut Tower Bar? Does it clear?

 

The LT1 intake sits way lower than the TPI unit, so there should be no clearance issues at all with a strut tower brace.

 

Wow, this post is a year old! Dug up from the archives huh?

 

Yeah I'm looking for possible alternatives to the TPI intake system that will work with a strut tower bar. I'm building a car for roadracing and I want a rev happy motor.

Thanks for the info 4L60bliss! Looks like the LT1 intake is a good choice for me (better than the StealthRam) because I can use a STB.