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Research,searching lt1 valve spring upgrade


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2 replies to this topic

#1 Rick Avery34

Rick Avery34

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  • Engine: Lt1
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Posted 3 weeks ago

I have been thru hours of searching,researching. Have 1995 firebird lt1. Installing xfi457 cam,headers 1 5/8 tubes,3200 stall,373 gears, electric cutouts
What valve springs will work with stock head.Doing full rebuild this winter so just need something for this season.
Thanks so much, my head is starting to hurt,older 23 degree stuff is not a problem,
Also who is the go to for programing computer.

#2 Injuneer

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Posted 3 weeks ago

Do you possibly mean the “467” XFI 230/236  cam?  1.5 or 1.6 rockers?

 

Have you asked Comp Cams for their recommendation?  They sell a complete valve train kit for that cam, specifically for the LT1/LT4.

 

Only reputable LT tuner I am aware of is Moe Bailey.  
 

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381ci all-forged stroker (Callies Stealth, Oliver billet rods, BME 2618-T61 nitrous pistons) - 10.8:1 - CNC LT4 heads/intake - Comp Cams solid roller - MoTeC M48 Pro engine management - 8 LS1 coils - 58mm TB - 74#/HR injectors - 300-shot dry nitrous - TH400 - Gear Vendors 0.78:1 O/D - Strange 12-bolt - 4.11 Pro-Street gears - AS&M headers - true duals - Corbeau seat - AutoMeter gauges - roll bar - Spohn suspension - QA1 shocks - a few other odds 'n ends. 800HP / 800lb-ft at the flywheel, on a 300-shot. 11.5 @ 117 MPH straight motor
 
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#3 Rick Avery34

Rick Avery34

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  • Gender:Male
  • First Name:Rick
  • City:Calgary
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  • Interests:Gearhead
  • Year: 1995
  • Make: Pontiac
  • Model: Firebird
  • Engine: Lt1
  • Transmission: Automatic

Posted 3 weeks ago

Xfi467 cam....fat fingers
Leaning towards jegs 1200 series springs.sku278 1218 16.
Thanks for the info,budget build just want it functional




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