LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Nitrous and Cam Only?

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Old 10-25-2009, 06:23 PM
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Originally Posted by imthat1guy
Are you serious sepno? Thats exactly what I'm trying for. Is he still running it or did he blow his motor or anything? Did he have it tuned at a shop or mail order?
I'm sorry I could be mistaken. He has a 355 w/ a 503c. It was dynotuned at pcmforless.

ok I found his sig. I didn't know he had p&p heads as he tells everyone otherwise. this is his sig im sure its kinda old tho.

93 Trans Am 355 LT1 /p&p heads/224.230cc/1.6 cc promag/ 52mm tb/ ported intake/pcmforless/ bbk headers/ bbk ud pully/ march alt pully/ msd 6al box/ msd 8.5 wires/ msd blaster coil/ tr55 plugs/ 160*/ SLP Ram Air/ SLP smooth bellow/ K&N/ air foil/ flowmaster/ TB plate/ Tux top/ CETA bumper/ Ls1 tails/ White face guages/ chrome zo6 wheels/ b&m shift kit/ 3.73 gear/ blackbird stripes/!moldings/!emblems/ US Exotics RAM AIR Hood.
Old 10-25-2009, 06:27 PM
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its a stretch but possible ,but the doubt comes in when it has a auto trans
Old 10-25-2009, 09:28 PM
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Well I think I'll be pretty fine with 100 shot or maybe 125 but doubt that much doesn't really help my situation when you guys keep saying you went up and ended up blowing your motors. I don't want that yet got another project truck I'm working on too.
Old 10-25-2009, 09:30 PM
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Its cool sepno I'm going to do P&P Heads too just in a bit don't really have that kind of money to do that right now but got the spare heads to send them off for the 2 or 3 weeks.
Old 10-25-2009, 09:49 PM
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Running a 100shot on top of what I have with no issues to date. I'm having some nitrous issues but thats a different story. Engine seems to be holding up just fine.
Old 10-26-2009, 09:21 AM
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I'm getting all excited now hearing things that I WANT to hear. We should see when I'm done hopefully I'm not the 1% that got a not so good lt1 and create major issues for myself.
Old 10-26-2009, 09:22 AM
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BlackBirdWS6 did you put in a new fuel pump or bigger injectors?
Old 10-26-2009, 01:57 PM
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It is my car that made 371hp, originally i had planned on having the heads and intake done but ran out of money i guess i need to update my sig, here is a link to my car recently just a 355 with 503 cam and 125 shot
https://ls1tech.com/forums/lt1-lt4-m...mes-cc503.html
Old 10-26-2009, 02:01 PM
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btw the nitrous is on a progressive system which is the reason the torque is lower, eliminated the torque spike
Old 10-26-2009, 04:55 PM
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I'm spraying a 125 shot on top of the cam and other mods below. I have to wait about a second after launching before hitting the spray. If not I would never get traction and the rear would probably explode with sticky tires. New heads are going on in the spring. So far so good.
Old 10-26-2009, 06:22 PM
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Originally Posted by imthat1guy
BlackBirdWS6 did you put in a new fuel pump or bigger injectors?
I have a racetronix in-tank pump with the hotwire kit. Injectors are nothing special but SVO #30's.
Old 10-26-2009, 07:38 PM
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same setup im on
Old 10-26-2009, 11:32 PM
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Alright you guys are getting me all juiced about this can't wait to get it done but thinking about waiting a little bit while its apart and get a new fuel pump and injectors to go with everything ... Mise well get it all done right now then later right.
Old 10-27-2009, 09:33 AM
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Just read a post from Daniel6718 him spraying Nitrous all over a cam only lt1 hitting some good numbers with no problems what so ever. Thats what I"m talking about got to get it done!
Old 10-27-2009, 11:05 AM
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I'm doing a similar build 503, heads, N2O, etc. I have 30lbs red tops already, I was wondering is the upgrade to the bigger fuel pump a must? I was thinking the stocker would provide enough fuel & pressure for a 100 to 150 shot. But if not I'd like to know so I can change it out while the car is down.
Old 10-27-2009, 11:16 AM
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my numbers were made on a stock pump, at the end of the dyno mine started to lean out where my pump was running out at 500hp. I would recomend a new pump for saftey.
Old 10-27-2009, 06:19 PM
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Originally Posted by Revson
I'm doing a similar build 503, heads, N2O, etc. I have 30lbs red tops already, I was wondering is the upgrade to the bigger fuel pump a must? I was thinking the stocker would provide enough fuel & pressure for a 100 to 150 shot. But if not I'd like to know so I can change it out while the car is down.
I would recommend a new pump. My car is a 97 with roughly 75k and I just didn't want to risk running out of fuel or having a failure. Just good insurance.

Originally Posted by camminlt1t/a
my numbers were made on a stock pump, at the end of the dyno mine started to lean out where my pump was running out at 500hp. I would recomend a new pump for saftey.
+1
Old 10-28-2009, 02:02 AM
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Thanks guys, maybe you saved me a motor, going to buy a Walbro tomorrow.
Old 10-28-2009, 02:38 AM
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Originally Posted by Revson
Thanks guys, maybe you saved me a motor, going to buy a Walbro tomorrow.
FWIW, I'm spraying 150 on a stock pump.

The walbro's fail too, best is to have a FPSS installed so no matter what the cause, if fuel pressure drops, kit wont spray.
Old 10-28-2009, 10:31 AM
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Yeah I'm going to go ahead and get a new fuel pump not sure if I want the walbro or racetronix?


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