LT1 intake on L98
Thread Starter
Le Mans Master
Joined: Jun 2004
Posts: 5,779
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From: Peoria AZ.
St. Jude Donor '05
LT1 intake on L98
I was thinking instead of spending alot of $$$ on a high flow tpi system,I could put a LT1 intake on it instead.I know it can be done, http://www.lt1intake.com/ but a guy I know said if I do this I will lose my low end touque.Has anyone done this and/or is it true?
Advanced
Joined: Nov 2004
Posts: 57
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From: Nacogdoches Tx
You'll lose a little bit, but what you gain up top will make it worth it.
IIRC that intake flows well to 6500RPM, so anything that you'll be turning in an L98 will be fine.
You planning on doing it yourself or having Millican prep it?
IIRC that intake flows well to 6500RPM, so anything that you'll be turning in an L98 will be fine.
You planning on doing it yourself or having Millican prep it?
Le Mans Master
Joined: Apr 2000
Posts: 6,341
Likes: 1
From: Shelton CT
There have been a lot of discussions on the forum about the LT1 conversions. You will find mroe answers there and good info.
To cap it all up quickly though :
Loss of low-end under 4K torque = YES
Noticeable = YES YES
Pickup of upper 4K+ HP and better pull at higher speeds = YES
Noticeable = YES YES
PITA level of conversion/fittment (Scale of 1-10) = 8
Possible coolant/intake leaks = HIGH
Emissions Legal = NO
Can use stock Distributor = NO, Needs small Camaro type.
Can you use stock Waterneck = NO, Needs special remote thermostat housing and plumping to route water to back of modified intake.
COOLNESS FACTOR = YES YES, very sweet to see an LT1 intake on an older L98 engine.
To cap it all up quickly though :
Loss of low-end under 4K torque = YES
Noticeable = YES YES
Pickup of upper 4K+ HP and better pull at higher speeds = YES
Noticeable = YES YES
PITA level of conversion/fittment (Scale of 1-10) = 8
Possible coolant/intake leaks = HIGH
Emissions Legal = NO
Can use stock Distributor = NO, Needs small Camaro type.
Can you use stock Waterneck = NO, Needs special remote thermostat housing and plumping to route water to back of modified intake.
COOLNESS FACTOR = YES YES, very sweet to see an LT1 intake on an older L98 engine.
Team Owner
Joined: Sep 2001
Posts: 62,146
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
I would consider it only with a manual transmission, but there is great potential for top-end gains with it.
Drifting
Joined: Aug 2004
Posts: 1,400
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From: Oceansaide CA
I'veb been thinking about this myself. All that low end business is OK for racing somsone from a light. Up a steep hill. With super hot, dry, new asphault. That's about it.
Think about it. TQ is the power. HP is the rate at which that TQ is delivered (basically). SO what good is having 350tq if you have to wait a day for it to come in? (the L98 is a tow truck motor, measely 235hp)
I'd do it today if I had more time, and it wasn't so hockey.. I'm not a big fan of shimming distributors at some weird angle with home depot washers, if you know what i mean...
Think about it. TQ is the power. HP is the rate at which that TQ is delivered (basically). SO what good is having 350tq if you have to wait a day for it to come in? (the L98 is a tow truck motor, measely 235hp)
I'd do it today if I had more time, and it wasn't so hockey.. I'm not a big fan of shimming distributors at some weird angle with home depot washers, if you know what i mean...
Team Owner
Joined: Oct 2004
Posts: 81,241
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From: altered state
St. Jude Donor '05
Torque motors are great for guys (like myself) that want to keep tall gearing and not have to spend the $$ for the high winding motor, and still move....
If I had 4.11's in this and a manual, then yes, I'd consider an LT1 changeover, big cam, etc. Depends on what you want the car to do.
They both have their pro's and cons. I'll take one of each, please!
If I had 4.11's in this and a manual, then yes, I'd consider an LT1 changeover, big cam, etc. Depends on what you want the car to do.
They both have their pro's and cons. I'll take one of each, please!
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Drifting
Joined: Jan 2005
Posts: 1,354
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From: San Antonio Tx
Buying parts that fit is like doing crossword puzzles with the answers already there. Or watching a movie if you've already seen the ending. Dare to be different! I havent noticed any lack of low end torque in the lt1 engines. And my sisters lt4 pulls surprisingly strong at 1000 rpms. I have an lt4 intake at the machine shop now getting welded up to fit my vortec motor. I had him run an extra bead around the area that will be drilled for the water outlets. This guy's specialty is cylinder heads and I am confident he can weld a manifold up and mill it back to square.
"No guts, no glory"
"No guts, no glory"
Le Mans Master
Joined: Apr 2000
Posts: 6,341
Likes: 1
From: Shelton CT
Originally Posted by RWDsmoke
I havent noticed any lack of low end torque in the lt1 engines. And my sisters lt4 pulls surprisingly strong at 1000 rpms.
Thread Starter
Le Mans Master
Joined: Jun 2004
Posts: 5,779
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From: Peoria AZ.
St. Jude Donor '05
Originally Posted by BrianCunningham
After you mount the small diameter distributor, how much room is left?
All it would take is a small plate with passages in it.
All it would take is a small plate with passages in it.
Thats what I was thinking,I'm going to have to mock it up and see what it would take.
I would like to put a single turbo on it some day
