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326 power?

  
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326 power?

 
lemans66 lemans66
New User | Posts: 1 | Joined: 11/12
Posted: 11/29/12
09:08 PM

I have a 66 Lemans with a 326. I want to build a powerful street/strip car. I don't Know how much power I can get out with the 326. Right cam, intake, Carb, and so on? I would appreciate any advice  

Formulajim Formulajim
Enthusiast | Posts: 379 | Joined: 02/09
Posted: 11/29/12
09:17 PM

That thing can go like a rocket. I had a 67 HO firebird it was good. My brother had a 65lemans with a 326 we ordered a short block and it turned out to be a 389. With the 326 heads on the 389 it would fry the tires at 70 mph if you stood on it. In order to make that combo work you have to plug the upper water passage hole in the right head,the rear one. That thing would fry the tires in any gear at the slightest hit of the throttle. It was a four speed.  
Drive it before your dead!

idrivejunk idrivejunk
Addict | Posts: 5138 | Joined: 12/09
Posted: 11/30/12
04:49 AM

Welcome to HPP.

I think you'll have trouble getting a powerful street/strip car out of a naturally aspirated 326 in a LeMans. Even if you got it up to 350HP you'd still be the 13 second range. What elapsed time are you shooting for with the 326? Fast means WAY different things to different people and their wallets.  
idrivejunk

waynep71222 waynep71222
Enthusiast | Posts: 391 | Joined: 04/12
Posted: 11/30/12
08:22 AM

welcome to the site... since you are new here..

you might want to read and click through the photos of this article on the smaller bore pontiac motors..

http://www.highperformancepontiac.com/tech/hppp_1102_350_ho_engine_build/viewall.html  

Pontiacman8 Pontiacman8
Moderator | Posts: 5775 | Joined: 02/08
Posted: 11/30/12
09:57 AM

Icon Quotelemans66:
I have a 66 Lemans with a 326. I want to build a powerful street/strip car. I don't Know how much power I can get out with the 326. Right cam, intake, Carb, and so on? I would appreciate any advice

What heads do you have on this engine now?
What rear gears?
What transmission does the car have?  
Engine builder,self taught auto body guy.
Horsepower sells engines and torque wins races

Pontiacman8
Pontiacman8
Pontiacman8

blackbird72 blackbird72
User | Posts: 186 | Joined: 08/07
Posted: 11/30/12
03:13 PM

The 326 shares the same crank and rod length as a 350P, 389 and 400, so it does share some of the engine characteristics of these engines as well- it can also be made to make impressive torque and hp for it's size. I built a 326 for a guy with a 67 Firebird, and we wanted to use the 326 as well.

The 326 was bored .030 over and used cast Sealed power pistons and the factory crank, but Tomahawk 4340 H-beam rods were used instead of 5140 I-beams to avoid using mallory metal when the rotating assembly was balanced. The big power adder was a set of KRE heads fitted with 2.05/1.66 valves and milled to 56cc. The block had to be chamfered to accept these heads, and valve-to-block clearance was verified with the Comp XE 268H cam with a digital inspection camera. 1.52 roller tip rockers were also used.

I spec'd a 780 cfm Holley Street avenger carb on a port-matched e-performer for the engine, but the owner thought it too big for the 326. After it was broken in, tuned, and the owner put a few thousand miles on it, he realized the 650 cfm e-carb he swapped on was a bit too small for his 326. But despite being undercarbed the 326 still manages to impress- he has trouble convincing SBC owners that his 326 is not a built 400.

Geno