curious newbie
Racer
Joined: Jul 2010
Posts: 308
Likes: 2
From: Kansas City MO
LMFAO !!
The intake is the issue Change the L98 intake... Now it's faster then an Lt1 .. lol... And it is a gen 1 small block so much more out there to build it.
Same small block GM has been useing since the mid 50s Parts are everywhere for it...
UNlike the Vortec crap the lt1 has which is harder to find and cost more for that reason.
The intake is the issue Change the L98 intake... Now it's faster then an Lt1 .. lol... And it is a gen 1 small block so much more out there to build it.
Same small block GM has been useing since the mid 50s Parts are everywhere for it...
UNlike the Vortec crap the lt1 has which is harder to find and cost more for that reason.
What parts are you having problems finding cheaply for the LT1 that you can get cheaper for the L98? and for what costs? The LT1 and L98 use the same bearings, you can use the same 5.7" rods in either, same pistons (yes you can run the older style pistons in the LT1 or vortec engines and most budget builds and 383's use just that... - just make sure to match the ring set) - actually the only thing on the long block you have to be careful of is choosing a cam to drive the opti - the blocks are exactly the same as the earlier 1-pc ones, etc.
Drifting
Joined: Sep 2009
Posts: 1,794
Likes: 64
From: Roanoke Va
I personally haven't done it but I doubt it's going to be faster - the heads on the LT1 flow better and it's got a bigger cam so I can't see how a simple intake swap will net 55+ HP??
What parts are you having problems finding cheaply for the LT1 that you can get cheaper for the L98? and for what costs? The LT1 and L98 use the same bearings, you can use the same 5.7" rods in either, same pistons (yes you can run the older style pistons in the LT1 or vortec engines and most budget builds and 383's use just that... - just make sure to match the ring set) - actually the only thing on the long block you have to be careful of is choosing a cam to drive the opti - the blocks are exactly the same as the earlier 1-pc ones, etc.
What parts are you having problems finding cheaply for the LT1 that you can get cheaper for the L98? and for what costs? The LT1 and L98 use the same bearings, you can use the same 5.7" rods in either, same pistons (yes you can run the older style pistons in the LT1 or vortec engines and most budget builds and 383's use just that... - just make sure to match the ring set) - actually the only thing on the long block you have to be careful of is choosing a cam to drive the opti - the blocks are exactly the same as the earlier 1-pc ones, etc.
But then you run into the l98s cam issue does not do much above 5k rpms.
The lt1s power band goes to 5500 rpms... The Hsr will pull till 6500 rpms. 1k more rpms per gear of useable power.
Drifting
Joined: May 2002
Posts: 1,581
Likes: 2
From: The Motor City
LT1 heads only flow marginally better than L98 heads, and while the LT1 cam may have a tad more lift, it has less duration. And when you factor in that LT1s used a more restrictive exhaust manifold design, the only significant difference between the L98 and (early) LT1 engines was the intake manifold design. So yes, a simple intake swap CAN net 55+ hp. Take a look at dyno numbers for a TPiS MiniRam (which is essentially the same design as an LT1/4 intake) and you'll see that it not only makes WAY more power than any TPI style intake, but it continues to produce power above 6000rpm.
Drifting
Joined: Sep 2009
Posts: 1,794
Likes: 64
From: Roanoke Va
LT1 heads only flow marginally better than L98 heads, and while the LT1 cam may have a tad more lift, it has less duration. And when you factor in that LT1s used a more restrictive exhaust manifold design, the only significant difference between the L98 and (early) LT1 engines was the intake manifold design. So yes, a simple intake swap CAN net 55+ hp. Take a look at dyno numbers for a TPiS MiniRam (which is essentially the same design as an LT1/4 intake) and you'll see that it not only makes WAY more power than any TPI style intake, but it continues to produce power above 6000rpm.
I dont see the logic in the SR expensive problem matic and falls well short of the HSR and MR.
Then any mod added to support the MR or HSR pretty much gives max gains. RRs heads cam headers etc
Last edited by Jamie Lennartson; Aug 8, 2010 at 11:38 PM.
Drifting
Joined: May 2002
Posts: 1,581
Likes: 2
From: The Motor City
The only issue I have with the HSR is that in order to get it to fit under the hood of a C4 requires some cutting/fabricating of the manifold base. There's none of that with the MiniRam (MR), and because the MR is a one-piece design, removal and installation are super easy.
Drifting
Joined: Sep 2009
Posts: 1,794
Likes: 64
From: Roanoke Va
You can't fault the SuperRam (SR) too much. Remember, when John Lingenfelter first developed the SR, he was looking for balance between the fantastic torque developed by the TPI and the all-out horsepower produced by the MiniRam. The TPI suffered from high-rpm breathability and ran out of breath by 5000rpm. The MiniRam, on the other hand, produced incredible power, but it moved most of that power to the upper-end of the engine's rev range. So the SR was born as a means addressing both of these issues, providing great torque with high-rpm horsepower. Of course, it's design was complex and it suffered from a lot of vacuum leaks, but a well sorted SR can hold it's own with almost any intake out there.
The only issue I have with the HSR is that in order to get it to fit under the hood of a C4 requires some cutting/fabricating of the manifold base. There's none of that with the MiniRam (MR), and because the MR is a one-piece design, removal and installation are super easy.
The only issue I have with the HSR is that in order to get it to fit under the hood of a C4 requires some cutting/fabricating of the manifold base. There's none of that with the MiniRam (MR), and because the MR is a one-piece design, removal and installation are super easy.
And they do make HSR that will fit now.
Mine was one of the ones that did not. But i got it from a member of this forum who already cut ported and welded it into one peice like the MR.
But i want to do the whole build all at once heads cam rrs lifters.
I will install my melrose system before hand tho.
Le Mans Master
Joined: Sep 2006
Posts: 6,050
Likes: 147
From: Phoenix AZ
2021 C4 of the Year - Modified Finalist
Gentlemen,
Just remember that when the C4 was designed, the criteria was gas mileage.
Light, quick handling, sporty 2 seater that gets fantastic gas mileage.
Just remember that when the C4 was designed, the criteria was gas mileage.
Light, quick handling, sporty 2 seater that gets fantastic gas mileage.
Race Director
Joined: Jul 2003
Posts: 12,742
Likes: 43
From: Color my life with the chaos of trouble.
If you call them junk in terms of 1/4 mile you are absolutely ignorant. You can put a Camaro in the 11s/12s with very minimal cost and work. It takes a LOT to get an L98 to do that. Go to any local drag strip and look at what is being raced by the bracket beaters. You will see more LT1 based F-bodies in 1 day than you will see L98 Vettes in a year. Why do you think that is?
EDIT: If my personal experience isn't enough, the factory published times are 14.4 for a 1993 Camaro Z/28 coupe and 14.3 for a 1989 Vette.
Last edited by RedLS1GTO; Aug 9, 2010 at 12:22 AM.
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Le Mans Master
Joined: Oct 2008
Posts: 9,758
Likes: 49
From: Houston Texas
Melting Slicks
Joined: May 2010
Posts: 2,082
Likes: 3
From: Conowingo Maryland
I am bone stock and love the car. I learned a long time ago if you want a fast car(toy) you better have a back up car. So I do not nor do I plan on messing with the vet it is my pleasure car. With that being said it is just common sencse that starting in the 93 era up all the manfactures were creating a lot more horse power from all engines. the 80's vets would be hard presses to complete with most of them. Hell there are a lot of 4 cyls I would not even think about touching.
Le Mans Master
Joined: Oct 2008
Posts: 9,758
Likes: 49
From: Houston Texas
Thread Starter
5th Gear
Joined: Aug 2010
Posts: 5
Likes: 0
alright alright haha you guys and my father have me convinced to get it. THE DAY i sell my audi im driving up to spicer and test driving and hopefully buying this vette. what performance parts are cheap enough that get you goin, keep in mind it already has an exhaust system and K&N. what else is there im new to american cars only owned audi. what does she top out at as well
