Fuel system upgrade advice requested
Thread Starter
Teching In
Joined: Jul 2005
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Fuel system upgrade advice requested Well, i'm in the homestretch of my LT-1 heads/ cam/ exhaust/ clutch upgrade and am now turning my attention toward upgrading the fuel sysyem. The motor is a stock bottom end LT-1 with the following mods:
Ported intake and heads with 2.00/ 1.57 Manley valves
Comp cams custom grind 224/236 Dur. 502/ 520 lift (1.5 ratio) 115+3 LSA
Jet-hot coated long tubes
Y-pipe with twin random tech cats
Vortech v-1 trim (6 lbs at 6000 rpms before the port job)
Fuel system (current set-up)
stock injectors with Vortech FMU
Vortech T-Rex inline pump
I am seriously considering ditching my FMU and upgrading the injectors and fuel pump. What is the consensus on the proper injector size and fuel pump requirements? I expect to see at least 450 rwhp on the new set-up.
I plan on using a PCM for less mail order tune, then working out the tuning issues on the dyno. Are there any other computer tuning alternatives I could use? I'd really like to get into tuning it myself.
Cheers!
JD
Ported intake and heads with 2.00/ 1.57 Manley valves
Comp cams custom grind 224/236 Dur. 502/ 520 lift (1.5 ratio) 115+3 LSA
Jet-hot coated long tubes
Y-pipe with twin random tech cats
Vortech v-1 trim (6 lbs at 6000 rpms before the port job)
Fuel system (current set-up)
stock injectors with Vortech FMU
Vortech T-Rex inline pump
I am seriously considering ditching my FMU and upgrading the injectors and fuel pump. What is the consensus on the proper injector size and fuel pump requirements? I expect to see at least 450 rwhp on the new set-up.
I plan on using a PCM for less mail order tune, then working out the tuning issues on the dyno. Are there any other computer tuning alternatives I could use? I'd really like to get into tuning it myself.
Cheers!
JD
Thread Starter
Teching In
Joined: Jul 2005
Posts: 46
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Originally Posted by 00Z-28-LT1
i say go with 30# injectors and the racetronix in tank with the plug and play kit ----->
IS there a "horsepower" chart or rule of thumb on what injector size to use when targeting a specific horsepower goal?
Thread Starter
Teching In
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Originally Posted by z28boysteve
go to smokemup.com they have a killer injector req. calculator as well as other great tools, also Racetronix fuel system, EZ install!
Thanks for the scoop on smokemup! That's an awesome site!
I contacted Brian Harter at PCM for Less and he recommended the SVO 42lb injectors and the racetronix system. He just dyno tuned a car very similar to mine and made 475 rwhp!
Who has the best deals (read: cheapest) on the SVO injectors and racetronix plug n' play system?
Last edited by SiCk PuPpY; Jul 28, 2005 at 11:27 AM.
