Vortec Heads... Is the Torque Curve That Much Better??

[grumpyvette]

do the research on ALL the necessary components and ID bet youll find that while dual quads can be purchased ready to run for under $1250 tripple duces set up with the correct carbs/linkage ETC could easily cost TWICE as MUCH, and not run any better

 

http://www.barrygrant.com/tripled/default.aspx

 

while edelbrock still makes a 3 duce intake the correct carbs that fit are really hard to find

keep in mind on a correctly set up three duce intake the engine idles on only the center carb and the twin outside carbs act ONLY as secondaries and open in unison like the rear two venturies on a 4 barrel carb, you cant just stick three two barrels on there, first they won,t fit due to clearance issues, and they won,t opperate correctly, as they are designed to operate thru the full rpm range, not just from 2500rpm and up like the orriginal set ups

besides the dual quads costing less they have a slight performance and tuning advantage,STICK TO THE DUAL QUADS, if you must have multi carbs or a single carb if you want to keep cost and tuning issues lower/simplier, youll be ahead

[Guest Mike]

do the research on ALL the necessary components and ID bet youll find that while dual quads can be purchased ready to run for under $1250 tripple duces set up with the correct carbs/linkage ETC could easily cost TWICE as MUCH' date=' and not run any better

 

http://www.barrygrant.com/tripled/default.aspx

 

while edelbrock still makes a 3 duce intake the correct carbs that fit are really hard to find

keep in mind on a correctly set up three duce intake the engine idles on only the center carb and the twin outside carbs act ONLY as secondaries and open in unison like the rear two venturies on a 4 barrel carb, you cant just stick three two barrels on there, first they won,t fit due to clearance issues, and they won,t opperate correctly, as they are designed to operate thru the full rpm range, not just from 2500rpm and up like the orriginal set ups

besides the dual quads costing less they have a slight performance and tuning advantage,STICK TO THE DUAL QUADS, if you must have multi carbs or a single carb if you want to keep cost and tuning issues lower/simplier, youll be ahead

 

Hi Grumpy,

 

I found complete ready-to-run SBC triple deuce setups at Vintage Speed for $990 plus $150 for the three cores (if I don't send them any). That's $1140 total. If I want some really trick scoops, the total may run up to $1250 or so.

 

Can you work this into your design. Of course, the larger 2bbl carbs are a must. I trust your expertise and will follow your design exactly. I do want all roller timing components though.

[v80z]

Hey Mike

 

Let me know when you want to sell your existing heads.

[Guest Mike]

Hey Mike

 

Let me know when you want to sell your existing heads.

 

Will do, v80z. I'm still thinking about this so it may be awhile.

[Z48LT-1]

FWIW, the October 2006 issue of Hot Rod has a comparo of a single four barrel vs three dueces using two different camshafts on a 383 ci SBC. The Demon SixShooter 3x2 setup cost $2500; the four barrel was a Demon 750 on top of an Edelbrock Performer RPM Air-Gap manifold. The four barrel produced bigger numbers with both cams, while the difference between 1x4 and 3x2 was less with the smaller cam. FWIW, YMMV, all colors may not be available in all sizes, close cover before striking, etc., etc. Alas, it appears the article isn't on line, but there you are...

 

Cheers, Gary

[Guest Mike]

FWIW' date=' the October 2006 issue of Hot Rod has a comparo of a single four barrel vs three dueces using two different camshafts on a 383 ci SBC. The Demon SixShooter 3x2 setup cost $2500; the four barrel was a Demon 750 on top of an Edelbrock Performer RPM Air-Gap manifold. The four barrel produced bigger numbers with both cams, while the difference between 1x4 and 3x2 was less with the smaller cam. FWIW, YMMV, all colors may not be available in all sizes, close cover before striking, etc., etc. Alas, it appears the article isn't on line, but there you are...

 

Cheers, Gary[/quote']

 

Thanks for the info, Gary. Performance is the primary goal. But an agressive and more authentic look is important too. The original 250 GTO had six deuces, while the street versions (GTB's, etc.), had three deuces and a long oval breather so I'd like to incorporate that look if I can without losing too much power in the process.