LT5 Swap
Registered User
Joined: Jun 2002
Posts: 2,456
From: sarasota, fl
Originally posted by KCFormula
Obviously you havent seen them run. But a ZO6 will take a ZR1 up to 173 when it hits rev limiter. The only reason a ZR1 tops out higher is the gearing. Sorry bud but the ZO6 is on top of the ZR1 in all categories except price.
Obviously you havent seen them run. But a ZO6 will take a ZR1 up to 173 when it hits rev limiter. The only reason a ZR1 tops out higher is the gearing. Sorry bud but the ZO6 is on top of the ZR1 in all categories except price.
the LT5 engine has more ability to produce power than the LS6.....just the valve area alone is double.
Registered User
Joined: Apr 2001
Posts: 22
From: Tulsa, OK
Originally posted by got_hp?
have you ever even ridden in a properly maintained ZR1?
its one of the smoothest running engines assembled, and can withstand serious abuse. (engine testing included running them at 6000 rpm for a period of DAYS).
it also pulls like a **** on the topend. sure its only 405 hp, just like the Z06, but match them up on the highway, and stock for stock, the ZR1 pulls away from the Z06 faster and faster.
have you ever even ridden in a properly maintained ZR1?
its one of the smoothest running engines assembled, and can withstand serious abuse. (engine testing included running them at 6000 rpm for a period of DAYS).
it also pulls like a **** on the topend. sure its only 405 hp, just like the Z06, but match them up on the highway, and stock for stock, the ZR1 pulls away from the Z06 faster and faster.
I'm calling BS on the ZR1 beating a Z06. I've got a friend with an '02 Z06 bone stock down to the paper air filter. Runs 12.50's at ~114.5mph at the track. Several times he's raced a modified 95' ZR1 (tuning, borla exhaust, cold air intake, headers, 4.30 gears, etc..) and beat it. Both at the track and on the highway (on the highway with me in the car also). Both run surprisingly close at the track (one race was the Z06 12.52 @114.3, ZR1 12.61@113.2).
A stock ZR1 or even lightly modified ZR1 isn't going to pull away from a Z06.
Thats my 2 dollars worth.
I would love to see a t-76 t-80 on a LT-5. 
Registered User
Joined: Oct 2000
Posts: 1,620
From: Dover DE
ok,here are some fitment issues....... Gotta make headers to fit the confines that will be there if the LT5 drops between the fenders,doubt the stock vette manifolds work with the Fbody frame and shock towers.fuel system,Brake booster/abs could possibly be in the way. Cooling system will have to be modified,PCM and guages etc will have to be sorted out. Also might have ac/heater box interference on the pass side.
Will it clear a stock hood? what about the air induction side? And the transmission as stated above.
food for thought
Will it clear a stock hood? what about the air induction side? And the transmission as stated above.
food for thought
Registered User
Joined: Jan 2001
Posts: 2,148
From: Bay Area, CA
Originally posted by got_hp?
a guy i know has an amazing red ZR1 with the typical engine work........puts down ~550 rwhp, then sprays a 150shot.......mid 10s at 140+.
a guy i know has an amazing red ZR1 with the typical engine work........puts down ~550 rwhp, then sprays a 150shot.......mid 10s at 140+.
Registered User
Joined: Jul 1999
Posts: 3,647
From: Winnipeg, Manitoba, Canada
I think the LT5 is a taller motor no?
Damn...you guys beat me to the pushrod comment.
If I had $$ I would do a 383 LT5...no forced induction...no juice.
Fabricating the headers would be fun.
Damn...you guys beat me to the pushrod comment.
If I had $$ I would do a 383 LT5...no forced induction...no juice.
Fabricating the headers would be fun.
Registered User
Joined: Jan 2001
Posts: 2,905
From: Orlando,Fl
Originally posted by Gripenfelter
I think the LT5 is a taller motor no?
Damn...you guys beat me to the pushrod comment.
If I had $$ I would do a 383 LT5...no forced induction...no juice.
Fabricating the headers would be fun.
I think the LT5 is a taller motor no?
Damn...you guys beat me to the pushrod comment.
If I had $$ I would do a 383 LT5...no forced induction...no juice.
Fabricating the headers would be fun.
Registered User
Joined: Jun 2002
Posts: 2,456
From: sarasota, fl
Originally posted by Dr.Mudge
Reasonably quick, but he should be alot faster if he has a nice powerband, 550 RWHP should get him low to mid 10s by itself with no nitrous.
Reasonably quick, but he should be alot faster if he has a nice powerband, 550 RWHP should get him low to mid 10s by itself with no nitrous.
LOOK at his MPH.......140+.......those passes are on STREET tires.......stock suspension
guys that run 10sec 1/4 with 550rwhp have drag suspensions and drag tires, and usually trap upper 120-130.
Registered User
Joined: Jan 2001
Posts: 2,148
From: Bay Area, CA
Ok, thats better 
Why someone buys a Vette to drag race in though I dont know Once you hit 9s pretty much any organization will band the IRS, besides wanting an NHRA license and other tech stuff, big cage, fire system, yada yada.
Why someone buys a Vette to drag race in though I dont know Once you hit 9s pretty much any organization will band the IRS, besides wanting an NHRA license and other tech stuff, big cage, fire system, yada yada.
Thread Starter
Registered User
Joined: Dec 2002
Posts: 290
From: Oviedo
HAHA, my friend posted this message on my computer last night, he wants to swap an LT5 in is Transam. Hes going to talk to that guy today, ill let you all know what he finds out. LOL, wait till he finds out about the pushrods in a DOHC (lol, dumba$$). I dont think hes got the money to get it installed in his T/A but i think he should at least get the engine and re sell it for more $.
Registered User
Joined: Jan 2001
Posts: 2,148
From: Bay Area, CA
Just wait till he decides he wants new cams $$$$ and some headwork $$$$.
The Vettes also have a master computer, which interfaces with the PCM, so without an aftermarket computer solution I dont see how its going to run, which adds yet more money to the picture.
The Vettes also have a master computer, which interfaces with the PCM, so without an aftermarket computer solution I dont see how its going to run, which adds yet more money to the picture.
Registered User
Joined: Jun 2002
Posts: 1,817
From: O-Town
LT5 all the way, no question about it. If you go on corvetteforum.com and talk to the guys that have had both the z06 and the zr-1 they say that the z06 will win in the 1/4 but after that, the zr-1 will pull a z06 after about 125 or so. Also they of those ythat have had both said that they would take another zr-1 over a z06.