Options for making a 400rwhp LT1
I had the same thought and went with the 58mm but i have a buddy who is running a 396 on a 52mm and making big numbers with LE2 heads and a cc306 and 1.6rr so it seams that is not the most restrictive point.
Originally Posted by sworaz
Yeah there is plenty of people at, over, or close to 400rwhp with Elliot Portworks products (LE) and they won't draing your bank account. cz28 has alot of support and info for this type of work.
I want a tried and true package that has worked for lots of people before me. I tried to be a pioneer with my v6, and while it is powerful, it requires too much maintenence. I want a car that i can run hard and put away wet.
BLACKSHARK-
I know exactly how you feel. Thats how my V6 is. I'm really trying to avoid that if I go the LT1 route. I want to just buy EVERYTHING I need all at once, install it, and be done.
o yea i put a spec stage 3 in my car and for like the first 800 miles is sucked ***** but u just have to give them time to break in. yea it still chatters some but its a performance clutch what do u expect, i love the SPEC stage 3 clutch IMO
Unless you buy someones modded car all tuned perfect.
1. It will cost a pretty penny because as stated one mod requires another.
2. They never run the same as stock again
3. lose their reliablity
But a lot of fun along the way.
Originally Posted by Stroker396
I had the same thought and went with the 58mm but i have a buddy who is running a 396 on a 52mm and making big numbers with LE2 heads and a cc306 and 1.6rr so it seams that is not the most restrictive point.
Well of course it is restrictive, any intake you will have to port for either size TB (Duh right) You have to make sure that you have the right part for the application. Otherwise no one would have made a 52mm (the whole bigger isn't always better). As far as the port job for the TB that can be done yourself with a dremel and the right bit, easy job.
Originally Posted by Stroker396
Well of course it is restrictive, any intake you will have to port for either size TB (Duh right)
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Originally Posted by 97blackz28
the stock TB opening is 52mm, so no porting is required for the 52mm TB
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Joined: May 2007
Posts: 160
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I have a 93 vette and with the top end package I have it gave me 422.6whp. I went with afr 195cc heads with 2.05/1.6 valves(comp. pkg). Hydralic roller cam from comp. 232/240 .535/.545, hydralic roller lifters, 1.6rrs,shorty headers,52mm tb which flows close to 900cfm, slp exhaust and vortex ram air.I went with 32lb inj.Thats on 36 degrees advanced and a 13:1 a/f mixture. Afr is alot more hype then results? yeah,sure. I know AI does good work but come on. The hp chevy high performance magazine gets with all of the afr heads they use are amazing. The dyno numbers dont lie. AI may be the cheaper way to go, but when your talking about a project like this one, you dont cut corners.
Originally Posted by V8sounds
No I am not on drugs. I was 99% sure I said ported heads up there, but I geuss I did not. I meant to say that the stock heads if ported, should get you very close.
GGPC, we don't race dynos and most of you are incapable of understanding the HUGE amount of power lost going from an engine dyno with all the tricks to RWHP numbers.
To get 400rwhp through an automatic a motor without accessories and withough intake and exhaust restriction will have to make about 520hp or so. For a magazine they will play games to inflate numbers beyond this level. Loose clearances, ice, spark and fuel set unsafe for actual in car use etc. Flat out magazines LIE to get advertizer dollars, simple as that.
Originally Posted by Stroker396
I doubt you will hit 400 at the rear with stock heads I have a 3 angle job and some bowl blending and will dyno the 396 next week and I doubt it will be there because of them. I saw the LT4 cam specs and they are not all that big.
Originally Posted by RealQuick
Ported stock heads and a good cam will make 400rwhp no problem. Sounds like your heads have minor work done... a full port is key.
and i would have to agree a hotcam is not going to get you to 400rwhp even with ported heads, get a custom grind cam to work well with your heads and other mods as well and that will make it's power and torque where you want it.
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Originally Posted by 96capricemgr
Still ported heads and a HOT cam aint going to do it. The HOT cam is popular because it gets a lot of press, not because it is all that wonderful, it is fine but not great as most mistake it for.
GGPC, we don't race dynos and most of you are incapable of understanding the HUGE amount of power lost going from an engine dyno with all the tricks to RWHP numbers.
To get 400rwhp through an automatic a motor without accessories and withough intake and exhaust restriction will have to make about 520hp or so. For a magazine they will play games to inflate numbers beyond this level. Loose clearances, ice, spark and fuel set unsafe for actual in car use etc. Flat out magazines LIE to get advertizer dollars, simple as that.
GGPC, we don't race dynos and most of you are incapable of understanding the HUGE amount of power lost going from an engine dyno with all the tricks to RWHP numbers.
To get 400rwhp through an automatic a motor without accessories and withough intake and exhaust restriction will have to make about 520hp or so. For a magazine they will play games to inflate numbers beyond this level. Loose clearances, ice, spark and fuel set unsafe for actual in car use etc. Flat out magazines LIE to get advertizer dollars, simple as that.
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Joined: Feb 2006
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Originally Posted by GGPC
I run a A4 in my vette.With 3.73 gears and a 2800tc. Last time at the track with mts, I ran 11.83@117.3.Thats with a 3102lb vette. The parts and tune I used were right out of the mag. When I want to take a trip,I just switch chips.No big whoop. And most of you? I really like to know who your clumping me in with?
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Joined: Feb 2006
Posts: 434
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From: Winnipeg, Mb
I got 415rwhp on a 93 z28 and here is a list of my engine mods. Thought you might want some input that is actually backed up.
NUTEK/Jason Short heads
Port matched, ported 58mm TB holes, and painted Intake manifold
Holley 58mm TB
Lucas 38lb Injectors
Walbro 255lph fuel pump
BLUECAT tune
Moroso CAI
MSD coil
Accel wires
NGK TR-6 plugs
MSD digital 6A ignition
MSD 2 stage timing controller
Comp Cams cc306 camshaft
Comp Hi-Tec chrome-moly pushrods
Comp roller lifters
Comp Pro-Magnum 1.6 NSA roller rockers
Combination Motorsports dual valve springs
Chrome-moly retainers
Comp 10* locks and locators
Comp rocker studs
GMPP guideplates
Meziere electric water pump
Pacesetter ceramic-coated longtube headers
NUTEK/Jason Short heads
Port matched, ported 58mm TB holes, and painted Intake manifold
Holley 58mm TB
Lucas 38lb Injectors
Walbro 255lph fuel pump
BLUECAT tune
Moroso CAI
MSD coil
Accel wires
NGK TR-6 plugs
MSD digital 6A ignition
MSD 2 stage timing controller
Comp Cams cc306 camshaft
Comp Hi-Tec chrome-moly pushrods
Comp roller lifters
Comp Pro-Magnum 1.6 NSA roller rockers
Combination Motorsports dual valve springs
Chrome-moly retainers
Comp 10* locks and locators
Comp rocker studs
GMPP guideplates
Meziere electric water pump
Pacesetter ceramic-coated longtube headers