I have heard of people doing it and I have questions for them.
1. Do the ports line up? I understand I'll be drilling new mount holes.

2. Can I re-use my throttle body?

3. Will a small (1987+) diameter distributer clear? I understand I'll need to make the hole first.

4. Will running seperate coolant lines from each head (like circle track cars)to the radiator be sufficant?


IP

 

First off yes you would have to drill new holes in the manifold. But I don't think the ports would line up properly.

Seciond you would need a waterpump from a lt-1 due to the fact that the lt-1 has the thermastat in the waterpump not the manifold. It also runs of a splined shaft that is connected to the cam gear by another gear, so it is not belt driven like any other gm engine. i don't think that the lt-1 waterpump will bolt on to the stock block.

Third for the distributor, the lt-1 dosen't have a distributor (per say) it has something called a opti-spark which acts as a distributor but that part runs directly off the cam by way of a splined shaft on the front of the engine.

conclusion I don't think that this combo would work on your engine.

try lookeng at a mini-ram it will be less trouble and will work a heck of a lot better.

------------------
97 formula w/6speed,cags skipshift eleminator, hurst billet pro shifter, 30#injectors,adjustiable fuel presure regulator,Moroso cold air induction,ported mass air sensor,accell300+ ignition box, accell 9000 wires, bosch platnum4 plugs,flomaster crossflow muffler,Lingenfiter 52mm throttle body,TPIS L98 SuperProfile cam,Crane 1:6 full roller rockers,Edelbrock subframe connectors,Edelbrock strut tower brace.

Other car is a 89 GTA w/700r4w/stage 2 shift kit, corvette servo, B&M mega shifter, TPIS bigmouth intake, TPIS large tube runners, TPIS 52mm throttle body,Edelbrock ported centerbolt heads,LT1 24# injectors,GMPP LT4 hotcam,CompCams Pro magnum roller rockers,Edelbrock headers, flowmaster crossflow muffler,MSD 6A, accell coil, bosch platnum plugs, this car is currently under rebuild and restoration.

 

And $1000 more......I know of the differances, I am asking for advice from people that have done it.

 

I think the answer is simple, the LTI intake will not line up with our older SBC motors. The ports don't line up along with alot of other things. I can score LT1 intakes all day at the Daytona Rod Run for next to nothing. If they could replace the mini-ram don't you think the price of the LT1 intake would increase?

------------------
Rob P
89RSconvtZZ4TPI Edelbrock Intake
SLP Dual Cold Air Intake 1 5/8" Headers Semi-Siamesed Runners, IROC
suspension, alum shaft. Numerous mods.
92Z28convt5spd (stock)
71Impala convt 402BB
BETTER DRIVING THRU SUPERIOR HORSEPOWER!

 

I looked into that before...the price to machine an LT1 intake and to fit everything properly would cost almost as much as a used MR. I would suggest looking for a used miniram via ebay or on the classifieds. If this is a street motor, sometimes ported and siamesed LTR's or a Superram will work better. My recommendation: if you aren't a machinist and don't have the tools, don't worry about it.

 

I looked into that before...the price to machine an LT1 intake and to fit everything properly would cost almost as much as a used MR. I would suggest looking for a used miniram via ebay or on the classifieds. If this is a street motor, sometimes ported and siamesed LTR's or a Superram will work better. My recommendation: if you aren't a machinist and don't have the tools, don't worry about it.

 

I am a machinest on the side but not my primary job anymore, not enough money in it.
I was planning on filling(welding) the intake holes and re-drilling the intake to the TPI pattern so I won't have to touch my heads.
I too am concerned over the distributer, will a small base distributer clear if I provide the hole? that's simple to make that hole.
I guess I need to look for a used intake and look to see.

 

How much?

 

I found three last year for right at $100 bucks. They were everywhere. That was the asking price before negotiating.


------------------
Rob P
89RSconvtZZ4TPI Edelbrock Intake
SLP Dual Cold Air Intake 1 5/8" Headers Semi-Siamesed Runners, IROC
suspension, alum shaft. Numerous mods.
92Z28convt5spd (stock)
71Impala convt 402BB
BETTER DRIVING THRU SUPERIOR HORSEPOWER!

 

in case you didn't catch what I said before you can't hook your distributor or the thermastat to the lt1 intake. that is why I said that it would be more trouble than it's worth. I am also a machinest full time and I can tell you right now that it's going to be a mother, but you do what you want it's your time and money.

 

now i could be wrong but didn't GM's Research and Development department make a LT1 style intake that would fit a L98? i could've sworn i seen one...could be wrong though...anyone else ever heard of this???

------------------
Check out MyGTA Nicknamed:The Big Red Machine
***AOL IM RiceEatinGTA***
Moderator at www.transamgta.com
"What does not kill us only makes us stronger"

Tony

 

And in case you didn't read my first post I mentioned drilling new mount holes and distributer hole would be required so that's not the question.
I asked for any ADDITIONAL problems not covered in my post.
Also the only money will be the purchase of an intake for around $100. My time is free, I won't charge myself.
I also plan on using additional coolant hoses from the rear of the heads to the radiator since the LT1 intake is a dry system.

 

LT1 intakes have been made to fit Gen 1 engines but the cost isn't worth it unless you have a machinest for a friend that will basicly do it all for you. The ports will like up but all the intake bolts are different as a preventative measure. You would need to make a hole for the distributor. You would need to make a water crossover passage in front under the TB where there isn't much, if any, room. John Moss put an LT1 intake on a green RWD late model Monte Carlo. They used a 400 small block chevy and use f-body floorpans to convert it to RWD. It was very cool. If you check out my EFI page, you will see a cheap intake from Holley. I also have an article on putting GenII LT1 heads on a GenI block. You can see the different intake bolt patterns and such. The L98 TB should fit a LT1 intake.

------------------
-Tas
'89 Formula WS-6

305, TBI, auto, 14x3 chrome flat based open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips....

To be installed eventually far far far into the future: Yours if the price is right and I don't have to ship :
Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248), Catco 3" cat, and injector spacer.

Super GRK_Taz World
F-Body Dual Exaust
EFI & Intake Options
AOL IM: superGRtaz

 

If it's not worth the cost to modify a LT1 intake then then why spend $1300 on a Miniram? They are the same basic design are they not?

 

The LT1 intake was designed for a 275-300 horse engine. The MiniRam was designed for alot more. A set of highflow AFR heads look like Aluminum L98 heads. But they are not the same in terms of flow.

------------------
Black 90 IROC, L98, A4, 323 gear. SuperRamed 406 in the works!

 

FLY89GTA

now i could be wrong but didn't GM's Research and Development department make a LT1 style intake that would fit a L98? i could've sworn i seen one...could be wrong though...anyone else ever heard of this???

YES GM did make a proto type Lt1 type intake with a dist hole and EGR on it. I found one on Ebay and got it. The water passage is the only problem and thats allmost done. The intake has larger ports and plenum area than a mini ram also.

Taz if you want a pic for your web page i can send you one.

Jerry M.

 

3/4 down the page is the MINI-RAM. That is the protype that everybody is talking about.

http://www.tpis.com/pg9-12.html

Price $850 :0


------------------
90RS 305TBI\5-speed
Fastchip
Open Air Cleaner
1.5 Roller Rockers
Lakewood LCA & Panhard,10 Bolt Posi-Disk Rearend 2.73
KYB all around
Energy Supension front end kit
36/24 Sway bars
Dual Fans
In the works-
LT-1 Cam

1994 Formula
Custom PCM
LCA's
Panhard Bar
Posi 3.42
Ported MAF
K&N air

 

Don't forget to add $355 for the fuel rail kit. That comes to $1205 total.

 

Are any parts from the LT1 system interchangable with the TPI if so which parts and what advantage would be gained

 

 

Almost everything, except the block, the heads, the intake, and the opti-spark. The cam, pistons, rods, crank, pushrods, lifters, etc, will all fit another roller engine.


------------------
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.23 @ 107.62 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-