LT4 in a camero?

[Want_Notch]

I saw a black camaro with lt4 stickers on it today.


Being totally bowtie stupid what is an LT4? Fast? Slow? Fake?

oops spelled the title wrong....what do expect I am a ford guy.

[TransAm12sec]

http://www.grandsportregistry.com/lt1vslt4.htm

New camshaft design
Larger valves
Roller rocker arms
Revised Head design
Head Gaskets
Revised Piston Design
Positive-twist top piston rings
Fuel System
Intake Manifold
Roller timing chain
Specially machined crankshaft
Dual-mass front torsional damper
Nodular iron main bearing caps
Teflon rear crank seal

1996 Chevrolet Corvette when equipped with 6-speed manual transmission (includes all Grand Sports) (Production: 6,359)
1997 Chevrolet Camaro SLP/LT4 SS 6-speed (Production: 100)
1997 Pontiac Firebird SLP/LT4 Firehawk 6-speed (Production: 29)

[Firefighter Z]

LT4 came in the Grand Sport Vettes I believe and in some F-bodys before they got a make over..

It's a nice motor and it was fast for its time... I dont know the HP rating on it.

BTW its CAMARO LOL!

[97z2801ss]

HP I believe was 330
it was int he collectors edition corvette and the GS.

[Cleveland Dave]

its comparable to the ls1

[juicedimpss]

its comparable to the ls1
:rolf now thats funny shit there.

[Cleveland Dave]

ive read it other places...not sure how accurate that statement is...but i think performance wise there pretty close.

quick search brought up this...

"Good point about the LT4! It is definitely a contender for an LS1. And if you thing about why, it's the technical differences between the LT1 and LS1.

For starters, the LS1 is approx. 80 lbs lighter due to the aluminum block. It has a higher flowing throttle body, 800 CFM compared to the LT 730 CFM. Although the cams are actually similar, it has higher ratio rocker arms, 1.7 compared to the LT 1.5 Their heads out-flow the LT1 due to the larger intake and exhaust valves, which are the same size as the LT4's. LT1 heads flow 212 cfm and the LT4 and LS1 are approx 240 CFM, The LS1 also has larger injectors. I beleive their also the same as the LT4's 28 lbs. compared to the LT1's 24 lbs. The LS1 has a coil pack for each cylinder, more efficent spark, sure doesn't win a beauty contest.

Actually the stock HP of an LT4 is slighty higer or very close to the LS1. I beleive the tork curve of the LS1 engine is slightly flatter than the LT4, thus producing higher tork at lower RPM's."

http://lt1tech.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=9;t=003426

[juicedimpss]

my opinion of the lt4 stuff is much different,but i will keep that to myself.
ill stick with my iron lt1 heads.

[Want_Notch]

my opinion of the lt4 stuff is much different,but i will keep that to myself.
ill stick with my iron lt1 heads.

You can admit it Ron.....you're an LT1 apologist.

[juicedimpss]

not really,i have just never seen any lt-4 headed cars run well,unless they were on 383-396 lowers.

[97z2801ss]

not really,i have just never seen any lt-4 headed cars run well,unless they were on 383-396 lowers.

they work well with the CE and GS vette too...

not aswell on stock lt1s

[number1]

The LT4 was basically the higher horsepower, more reliable LT1. To get to that point, the motor was basically totally redesigned, starting with 4 bolt mains and stronger (I believe steel) crank, to the head design, which featured intake and exhaust ports that promoted flow into and out of the combustion chamber.

[Crawlin]

the upper half is different. the FOUNDATION is the same as the vette LT1. both had 4bolt mains. the f-body and impala/caprice's had the 2 bolts

[Firefighter Z]

didnt they use 1.6 RR's on the LT4?

[WhiteZCamaro]

Yes i believe they did

[Feature Pony]

Its probably a fake, cause 1997 was the year the LT4 was put into a camaro SS and it was white with orange racing stripes and had the hounds tooth interior.. They might of transplanted that motor into the car but its not orginal.

[Prince Valiant]

to the head design (of the lt4), which featured intake and exhaust ports that promoted flow into and out of the combustion chamber.Yeah, unlike those LT-1 heads that discouraged air flow into and out of the combustion chamber. What were those GM engineers thinking? :durr

[Crawlin]

they make a specific LT4 swap kit from GMPP that just tosses the upper half on any of the LT1 engines. Not exactly the BIGGEST horsepower producer

[97z2801ss]

yea id rather go with a LE kit

[WhiteZCamaro]

The 100 camaros that were made in '97 were all hugger orange with white stripes

[HP ADDICT]

Basically its the same as a LT1 with slightly better heads, intake manifold, crane gold rockers, tiny bit bigger cam and factory 4 bolt mains. Not a worthwhile swap by any means. The lt4 block is a ok way to build a somewhat stronger engine and not have to machine for 4 bolts. I would also much rather do LE but there is more potential in TFS or AFR heads and a big cam and a stock LT1 block. The lt4 intake has been pulled by GM so they are now starting to be worth big bucks...glad I got mine earlier.