to do or not to do ??
Thread Starter
Cruising
Joined: Jan 2010
Posts: 10
Likes: 0
From: Laval Quebec
to do or not to do ??
Hi everyone, I'm pretty new to c5's, purchased mine at the beginning of this summer. I have a 1999 targa mn6 with 130km's on it (Quebec car).Only mods for now are vararam cai with smooth coupler and xs-power cat back wich I installed this summer..
I am looking to go with a cam this winter (I would install myself) probably englandgreen whiplash and everything that goes with it... was wondering if while I'm at it I should try to get a hold of a set of 799 heads (ls2).... I've been searching around and there seem's to be some controversial threads about their benefits...
The reason I would go with these heads is that I could probably get them cheap from my local scrap yard compared to 243's... My question is would there be a gain going with these heads or is there no real gain in hp...
I'm not a road racer and the car is pretty much a week end toy... I occasionnaly go to the 1/4 mile but that's about it...
Thanks for the advise !!
Simon
I am looking to go with a cam this winter (I would install myself) probably englandgreen whiplash and everything that goes with it... was wondering if while I'm at it I should try to get a hold of a set of 799 heads (ls2).... I've been searching around and there seem's to be some controversial threads about their benefits...
The reason I would go with these heads is that I could probably get them cheap from my local scrap yard compared to 243's... My question is would there be a gain going with these heads or is there no real gain in hp...
I'm not a road racer and the car is pretty much a week end toy... I occasionnaly go to the 1/4 mile but that's about it...
Thanks for the advise !!
Simon
Intermediate
Joined: Sep 2012
Posts: 29
Likes: 0
243 heads (LS6) came with 2.00 hollow stem intake valves (lighter) 799 (LS2) regular solid 2.00 intake valves
243 came with sodiom filled stem 1.55 exhaust valves (lighter and more heat dissepation) 799 came with regular solid stem 1.55
and this one I`m not sure of but 243 01-04 came with the blue LS6 springs (more lift capable) but 2001 243 and 2005 and later 799 came with yellow LS6 valve springs (less than the blue lift capability)
that`s why true 243 heads off of a ZO6 are much more expensive because of the hollow intake and sodiom exhaust.
this is what I understood from reading so anybody correct me if I`m wrong.
and they are popular because most sites write for their ported 243 heads:
*LS6 Style* or 243 or 799 head casting but the title says ported LS6 of 243 heads
243 came with sodiom filled stem 1.55 exhaust valves (lighter and more heat dissepation) 799 came with regular solid stem 1.55
and this one I`m not sure of but 243 01-04 came with the blue LS6 springs (more lift capable) but 2001 243 and 2005 and later 799 came with yellow LS6 valve springs (less than the blue lift capability)
that`s why true 243 heads off of a ZO6 are much more expensive because of the hollow intake and sodiom exhaust.
this is what I understood from reading so anybody correct me if I`m wrong.
and they are popular because most sites write for their ported 243 heads:
*LS6 Style* or 243 or 799 head casting but the title says ported LS6 of 243 heads
Melting Slicks
Joined: Jun 2012
Posts: 3,163
Likes: 6
From: Oceanside California
243 heads (LS6) came with 2.00 hollow stem intake valves (lighter) 799 (LS2) regular solid 2.00 intake valves
243 came with sodiom filled stem 1.55 exhaust valves (lighter and more heat dissepation) 799 came with regular solid stem 1.55
and this one I`m not sure of but 243 01-04 came with the blue LS6 springs (more lift capable) but 2001 243 and 2005 and later 799 came with yellow LS6 valve springs (less than the blue lift capability)
that`s why true 243 heads off of a ZO6 are much more expensive because of the hollow intake and sodiom exhaust.
this is what I understood from reading so anybody correct me if I`m wrong.
and they are popular because most sites write for their ported 243 heads:
*LS6 Style* or 243 or 799 head casting but the title says ported LS6 of 243 heads
243 came with sodiom filled stem 1.55 exhaust valves (lighter and more heat dissepation) 799 came with regular solid stem 1.55
and this one I`m not sure of but 243 01-04 came with the blue LS6 springs (more lift capable) but 2001 243 and 2005 and later 799 came with yellow LS6 valve springs (less than the blue lift capability)
that`s why true 243 heads off of a ZO6 are much more expensive because of the hollow intake and sodiom exhaust.
this is what I understood from reading so anybody correct me if I`m wrong.
and they are popular because most sites write for their ported 243 heads:
*LS6 Style* or 243 or 799 head casting but the title says ported LS6 of 243 heads
Thread Starter
Cruising
Joined: Jan 2010
Posts: 10
Likes: 0
From: Laval Quebec
Ok I see the differences between them, but would they be beneficial over my stock 241's... My goal is to go mid 400 rwhp and while I'm doing my cam this winter i figure i'll be there so was wondering if I don't have any work done to them if they will benefit me on the long run or if I should just stay with my stocker's...
Thread Starter
Cruising
Joined: Jan 2010
Posts: 10
Likes: 0
From: Laval Quebec
Alright thanks for all the input so one las thing, if i were to just puta set of bare 799 (no port or polish) would they still be a good choice or in that case should I stay with my 241's ??
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski