LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

lt1? TPi?

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Old Nov 13, 2003 | 07:34 PM
  #1  
udmwye96z's Avatar
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From: kansas
Question lt1? TPi?

I am looking at buying a 1996 z28 convertible. The writing on the windsheild said 350 TPI, but i have done a little research and i thought that the z came with the LT1. Is it possible that they can be the same? Which is it? HELP????????!!!!!!!!!!! Im clueless and need help before i buy it.

thanks
Old Nov 13, 2003 | 07:38 PM
  #2  
NOMAD's Avatar
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From: Under my Car as usual :)
Cool

Someones just stupid They own the car and don't even know anything aboout it. Does the guy wear his hat crooked also ?

BTW, it's SFI, sequential fuel injefction

-Shannon

Last edited by NOMAD; Nov 13, 2003 at 08:01 PM.
Old Nov 13, 2003 | 07:44 PM
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Josh-'04 GTO's Avatar
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Originally posted by NOMAD
Someones just stupid

-Shannon


It's an LT1, udmwye96z. If you don't even know which engine comes with the car, you might want to do a little more research before plunking down cash.
Old Nov 13, 2003 | 07:48 PM
  #4  
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TPI 305/350's were used 1985-1992...

1993-1997 Camaro/Firebirds with V8's are ALL a 350 (5.7L) LT1. The main difference being that the LT1 is a "Gen 2" design and the TPI is a "Gen 1" design. Gen2 (LT1 and LT4) are reverse-cooled and basically share no external parts with a Gen 1 350.

The good news is that the reverse-cooling and dry intake manifold make for better power (generally speaking) and a higher tolerance for detonation.

Good luck... strike a good deal! Put some BMR Subframe Connectors on that floppy convertible

-Michael
Old Nov 13, 2003 | 08:12 PM
  #5  
Josh-'04 GTO's Avatar
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Originally posted by grendal
The good news is that the reverse-cooling and dry intake manifold make for better power (generally speaking) and a higher tolerance for detonation.
Not true (on the detonation). Dry intake manifolds do not experience the "manifold wetting" of carbed intakes. This lack of fuel wash along the intake results in higher intake temps vs. carbed setups. Higher intake temp=higher air intake temps=an increased propensity towards detonation.
Old Nov 13, 2003 | 09:07 PM
  #6  
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Originally posted by Josh-'97 WS6
Not true (on the detonation). Dry intake manifolds do not experience the "manifold wetting" of carbed intakes. This lack of fuel wash along the intake results in higher intake temps vs. carbed setups. Higher intake temp=higher air intake temps=an increased propensity towards detonation.
Actually, by "dry intake" I was referring to coolant/water NOT flowing into or through the intake manifold, as it does on all gen1 smallblocks... on an LT1 you can pull the intake manifold without really touching the coolant.... Except for perhaps the throttle body lines, which most of us bypass This avoids having all your air intake air flow past hot coolant first.

No denying that LT1's are less detonation-prone than a Gen1.... Hell, I have less detonation on my LT1 than I did on my LS1. That thing was the detonation king!

-Michael
Old Nov 13, 2003 | 09:13 PM
  #7  
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From: Petersham, MA
Originally posted by grendal
Actually, by "dry intake" I was referring to coolant/water NOT flowing into or through the intake manifold

No denying that LT1's are less detonation-prone than a Gen1.... Hell, I have less detonation on my LT1 than I did on my LS1. That thing was the detonation king!
Well, that is a totally different ballgame!

Agreed. Although Gen1's have the cooler manifold due to wetting, I'll take an EFI manifold anyday. I'd much rather have the benefit of running virtually any manifold runner length/shape and not have to worry about puddling. Not to mention cylinder-to-cylinder fuel metering accuracy.
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