My Power Choice

C

CharlieNC

Member
My 96 Vette is auto with 3.07 diff. With 56k miles and a bit of basic work to get it up to par, it runs great. I will be only using this as a daily driver, but I would like a bit more power for the fun factor especially for road trips through a bit of rural driving options. As a basis I don't want to change the torque converter and will stick with the cast iron exhaust, which will be ported as I have read Vizard reports this makes a significant improvement. Also will delete the cats.

So now the options. I am strongly considering the Lloyd Elliot Stage1 head porting and the 218/224 0.57in high lift cam, with roller rockers. Appears this should add approx 100rwhp.

Does this sound like a proper combination given my basis, have I missed anything, do you recommend an alternate?

Thanks.. Charlie
 
youll gain power with the mods listed,
but Id seriously doubt that the result will reach a 100 hp gain
if you figure 8-12 hp for the roller rocker and maybe 30-35 for the cam swap,
I doubt the head porting and exhaust porting work on the stock exhaust,manifolds
without significant other upgrades on the exhaust system
,like going 3" full length, an x pipe and better flowing than stock mufflers,
including the removal of the cats will quite reach that 100 hp gain threshold,
youll notice the improvements ,
but Id be more inclined to not think it's going to be worth a full 100hp gain,
especially without an injector size upgrade,
youll need about a 32 lb rated injector set to run at a 430 hp level

be aware your starting out with about 330 hp if you have an LT1 vs an LT4
https://www.corvsport.com/1996-c4-corvette/#1996_CorvetteMain_Specs

http://www.superchevy.com/how-to/en...o-testing-7-popular-lt1-engine-modifications/
 
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=
youll gain power with the mods listed,
but Id seriously doubt that the result will reach a 100 hp gain
if you figure 8-12 hp for the roller rocker and maybe 30-35 for the cam swap,
I doubt the head porting and exhaust porting work on the stock exhaust,manifolds
without significant other upgrades on the exhaust system
,like going 3" full length, an x pipe and better flowing than stock mufflers,
including the removal of the cats will quite reach that 100 hp gain threshold,
youll notice the improvements,
but Id be more inclined to not think it's going to be worth a full 100hp gain,
especially without an injector size upgrade,
youll need about a 32 lb rated injector set to run at a 430 hp level

be aware your starting out with about 330 hp if you have an LT1 vs an LT4
https://www.corvsport.com/1996-c4-corvette/#1996_CorvetteMain_Specs

http://www.superchevy.com/how-to/en...o-testing-7-popular-lt1-engine-modifications/
Click to expand...

Thks for feedback.
 
Last edited by a moderator:
I think a rear gear change would help the most such as a 3:73 and see what that would do for your pep. If you plan to drive it on Interstates and such, just go with the engine mods.
 
T-Test said:
I think a rear gear change would help the most such as a 3:73 and see what that would do for your pep. If you plan to drive it on Interstates and such, just go with the engine mods.
Click to expand...

T a lot of interstate is involved on my road trips.
 
 
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Grumpy said:
a few factors to consider

http://garage.grumpysperformance.com/index.php?threads/calculate-fuel-injector-size.1200/

http://garage.grumpysperformance.com/index.php?threads/how-big-a-fuel-pump-do-you-need.1939/

http://garage.grumpysperformance.co...h-on-fuel-air-ratios-that-gets-ignored.15506/

http://www.wallaceracing.com/chokepoint.php

http://www.wallaceracing.com/injector-sizing.php

http://www.wallaceracing.com/header_length.php

http://www.wallaceracing.com/calcafhp.php

http://www.wallaceracing.com/eff-cr.php

https://www.exhaustvideos.com/faq/how-to-calculate-muffler-size-pipe-diameter/
Click to expand...

Looks like fuel delivery and exhaust systems would need major upgrade to support proposed cam and heads. But could support a cam only for best bang for the buck?? Thkx for the helpful info.
 
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