lt4 conversion on a 93?
Thread Starter
Registered User
Joined: Aug 2001
Posts: 69
From: Washington Township, OH
lt4 conversion on a 93?
I notice that the lt4 conversion is for 94-97 cars (guessing because of the fuel rails on the 92-93?), what would you need to change to do a lt4 conversion on a 93 lt1? I already have a hotcam for my 93 LT1 swap but was thinking of sprucing up the heads before I drop it in.
Registered User
Joined: Feb 2004
Posts: 1,309
From: Oshkosh, Wisconsin
skip the lt 4 conversion and get some llyod elliot heads and cam package.This is what he sent me the other night and you'll have lots of extra cash to boot.Like 1 grand more!!!! you'd be surprised with his prices and I haven't heard anything bad about him. The prices are using your heads sent to him.
Below is a basic run down on the head and cam packages. The best package will depend on HP goals, budget, rear gears, stall size, future plans, emissions, driving style, etc., etc, A phone call would be best to make sure that we can talk through these things and get a package that will work like you are wanting it to and also make sure that you have the complimenting parts to make each set up work.
I offer cam and head packager from $1100 to $1700 depending on driving style, emissions, RPM range, budget, etc.
-----------------------------------------------------------------------------------------------------
LE1 cam pulls from 2000 to 6200 RPM and should make 380-390 RWHP with matching heads, 30 lb injectors, 52 TB, 1 3/4 LTs, No cats, good tuning, etc. The heads are ported using stock valves, performance valve job, back cut valves, CM 612 springs, retainers and locks, milling, cleaning and assembly. These heads flow about 255/180 with a 195 cc intake port and stock LT1's flow about 215/150 with a 170 cc intake port.
Heads and cam are $1100 (plus shipping). This has the RPM range of the Hot Cam, CC 305, XE 224/230, etc. but makes more HP and TQ over these cams through out the entire RPM range. This will work with any gear and converter but the track times will be better with a stall and some gear.
-------------------------------------------------------------------------------------------------------
LE2 cam pulls from 2200 to 6500 RPM and should make 400-420 RWHP with matching heads, 30-36 lb injectors, 52-58 mm TB, 1 3/4 LT's, no cats, GOOD tuning, etc. The heads are ported and machined for larger Ferrea 2.00/1.56 valves, Comp 987 dbl springs, TITANIUM 10 degree retainers, locks, locators, milling, cleaning and assembly. These will flow about 270/190 with a 205 cc intake port.
Heads and cam are $1600 (plus shipping) and will need GOOD tuning. This has the RPM range of the CC 306 cam but will make more HP and TQ at peak and across the board. The REAL difference will be the LE2 cam will make TQ in the 2500 RPM range and the cc 306 doesn't start until way past this.
-----------------------------------------------------------------------------------------------------
LE3 cam pulls from 2600 to 6800 RPM in a 350 (2300 to 6500 RPM in a 383) and should make 410 to 430 RWHP with matching heads, 36-42 lb injectors, 58 TB or mono blade, GOOD tuning, etc, etc, etc. These are the same heads from above but with Comp 977 springs instead of the 987's. These are stronger and will also need Comp R lifters to handle the spring pressure.
Heads and cam are $1700 (plus shipping) and will need GOOD tuning. This cam is similar to the GM 847 cam but makes about 10 more HP at peak and starts making HP sooner. Makes more HP and TQ across the board. Needs gear and converter to work well in a 350. Pretty much a racing cam for the 350 or a good street cam that will act like the LE2 in a 383.
-----------------------------------------------------------------------------------------------------
Everyone has a different opinion about what is streetable and what a safe RPM limit is for their engine.
If you are looking for just cylinder heads and no cam, the heads are priced at . . . . .
$750 for the LE1 heads only
$1250 for the LE2 heads only
$1300 for the LE3 heads only
Give me a call and I can help you pick a combo that you will be happy with.
Lloyd Elliott------------------------972-617-5671------------------------Red Oak Tx 75154
NightTrain66@msn.com
Below is a basic run down on the head and cam packages. The best package will depend on HP goals, budget, rear gears, stall size, future plans, emissions, driving style, etc., etc, A phone call would be best to make sure that we can talk through these things and get a package that will work like you are wanting it to and also make sure that you have the complimenting parts to make each set up work.
I offer cam and head packager from $1100 to $1700 depending on driving style, emissions, RPM range, budget, etc.
-----------------------------------------------------------------------------------------------------
LE1 cam pulls from 2000 to 6200 RPM and should make 380-390 RWHP with matching heads, 30 lb injectors, 52 TB, 1 3/4 LTs, No cats, good tuning, etc. The heads are ported using stock valves, performance valve job, back cut valves, CM 612 springs, retainers and locks, milling, cleaning and assembly. These heads flow about 255/180 with a 195 cc intake port and stock LT1's flow about 215/150 with a 170 cc intake port.
Heads and cam are $1100 (plus shipping). This has the RPM range of the Hot Cam, CC 305, XE 224/230, etc. but makes more HP and TQ over these cams through out the entire RPM range. This will work with any gear and converter but the track times will be better with a stall and some gear.
-------------------------------------------------------------------------------------------------------
LE2 cam pulls from 2200 to 6500 RPM and should make 400-420 RWHP with matching heads, 30-36 lb injectors, 52-58 mm TB, 1 3/4 LT's, no cats, GOOD tuning, etc. The heads are ported and machined for larger Ferrea 2.00/1.56 valves, Comp 987 dbl springs, TITANIUM 10 degree retainers, locks, locators, milling, cleaning and assembly. These will flow about 270/190 with a 205 cc intake port.
Heads and cam are $1600 (plus shipping) and will need GOOD tuning. This has the RPM range of the CC 306 cam but will make more HP and TQ at peak and across the board. The REAL difference will be the LE2 cam will make TQ in the 2500 RPM range and the cc 306 doesn't start until way past this.
-----------------------------------------------------------------------------------------------------
LE3 cam pulls from 2600 to 6800 RPM in a 350 (2300 to 6500 RPM in a 383) and should make 410 to 430 RWHP with matching heads, 36-42 lb injectors, 58 TB or mono blade, GOOD tuning, etc, etc, etc. These are the same heads from above but with Comp 977 springs instead of the 987's. These are stronger and will also need Comp R lifters to handle the spring pressure.
Heads and cam are $1700 (plus shipping) and will need GOOD tuning. This cam is similar to the GM 847 cam but makes about 10 more HP at peak and starts making HP sooner. Makes more HP and TQ across the board. Needs gear and converter to work well in a 350. Pretty much a racing cam for the 350 or a good street cam that will act like the LE2 in a 383.
-----------------------------------------------------------------------------------------------------
Everyone has a different opinion about what is streetable and what a safe RPM limit is for their engine.
If you are looking for just cylinder heads and no cam, the heads are priced at . . . . .
$750 for the LE1 heads only
$1250 for the LE2 heads only
$1300 for the LE3 heads only
Give me a call and I can help you pick a combo that you will be happy with.
Lloyd Elliott------------------------972-617-5671------------------------Red Oak Tx 75154
NightTrain66@msn.com
Registered User
Joined: Mar 2004
Posts: 1,503
From: BFE, Ohio
however, if you are set on doing the LT4 conversion, the 93 fuel rails will work on the intake, the crossover will just be in the back instead of the front. I did this for my conversion and it works just fine.
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