I just bought a 1993 TA with a lt1 and I plan on building a 383 for it.Does anyone have any proven engine combo's etc.. to share?any info would be of great help.I know nothing about tpi engines I have built lots of big and small block old school motors never anything with a computer I think the 93 is still a chip car and they changed it in 94?What all is involved in tunning the 93?I plan on using a 383 kit a 366 cam 2800-3000 stall what size injectors should I use?what size tb?do I need a different intake?fuel pump?Thanks in advance!!

 

LE1 cam pulls from 2000 to 6300 RPM and should make 370-390 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) and will pass emissions with good tuning. This has the RPM range of the Hot Cam or CC 305 cam but makes more HP and TQ 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.

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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. It will make more HP than the cc 306 at ALL RPM's.

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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.

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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

NightTrain66@msn.com

 

that should take care of your top-end

 

1 3/4 LTs, No cats. true duals or just like factory without the cats?

 

id go with at least a 3" catback system with either mid-length headers or long tube headers. true duals would be optimal...

 

Check my sig, Proven 383, 306 cc, AFR combo