GM Experimental Prototype SBC 3x2 / Tripower setup

[solospeedshop]

When Brad & I picked up the Z28 Larry told us a lot of stories One of the main ones was about Smokey he said he would wait till about 5 o'clock to go see Smokey when he was getting info for his books They would hang out to late hours in the morning one day Smokey was busy he said go in and play so Larry was looking around and found the two 3x2 manifolds sitting on a shelf when Smokey came in he asked what can you tell me about those two manifolds sitting on the shelf that look like 3x2 Corvette BB but they are for a SB? Smokey said oh those well those are a piece of shit! I really got a kick out of that as I really like my Z28 I bought and I really like that piece of shit manifold! LOL Bill

[markjohnson]

3-2 bbls has never been the ideal race induction but it survived in legacy just by looking cool. All you have to do is look at 1967-69 Corvettes, when it came to ultimate performance the L88 sure wasn’t wearing the L-71’s 6-barrel induction on top. Looking cool doesn’t win races.

[RALLY]

Originally Posted by markjohnson

3-2 bbls has never been the ideal race induction but it survived in legacy just by looking cool. All you have to do is look at 1967-69 Corvettes, when it came to ultimate performance the L88 sure wasn’t wearing the L-71’s 6-barrel induction on top. Looking cool doesn’t win races.

I know of a 67 Corvette with the 427 oval port L-71 Tri-power which runs in the NHRA stock eliminator class that simply hauls. Low 10 second ETS.

[John Brown]

Al Maynard had a GM/Winters/Holley produced small block tri power set-up. I was never successful buying it from him when he was alive. I bid up to $4500 when it was in his estate sale. Still didn't get it. As I recall, it sold for around $6300.

[olredalert]

Originally Posted by John Brown

Al Maynard had a GM/Winters/Holley produced small block tri power set-up. I was never successful buying it from him when he was alive. I bid up to $4500 when it was in his estate sale. Still didn't get it. As I recall, it sold for around $6300.

----My bet would be that Al at one time or another had, at least, one of everything! He was one of a kind,,,RIP, Al!....Bill S

[Gary Anderson]

Originally Posted by RALLY

I know of a 67 Corvette with the 427 oval port L-71 Tri-power which runs in the NHRA stock eliminator class that simply hauls. Low 10 second ETS.

MADISON, Ill. - Final order after 2 rounds of qualifying in Stock Eliminator at the NHRA Camping World Drag Racing Series, 10th annual NHRA Midwest Nationals:

Weather conditions: air temperature 75 degrees, relative humidity 45 percent, barometer 30.05 inches, adjusted altitude 1,716 feet.


Psn--Num--Class-Driver, Home Town, Machine-----------------ET---Index---(+/-)

1 3321 B/SA Marion Stephenson, Williamsport IN, '15 C 10.167 11.25 -1.083
2 L177 FS/C Leonard Lottig, Meyersdale PA, '19 Camaro 9.227 10.30 -1.073
3 5942 FS/C Ryan Montford, Wichita KS, '13 Camaro 9.236 10.30 -1.064
4 507 A/S Lynn Engels, Watertown SD, '67 Corvette 9.906 10.95 -1.044

Just to be clear this is the L68 400hp oval port motor.

[ELEFUNTMAN]

I ran NHRA stock eliminator many years with my 340 sixpak. Made tons of power, many class wins and NHRA records in C/SA, D/SA. Gave everyone fits, they were glad I gave it up. Every time I showed up, “random” tear down. They took the fun out of it. The 3 Holley set up couldn’t be beat, back then anyway! I would love to have the set up on my Z28!

[RALLY]

Originally Posted by Gary Anderson

MADISON, Ill. - Final order after 2 rounds of qualifying in Stock Eliminator at the NHRA Camping World Drag Racing Series, 10th annual NHRA Midwest Nationals:

Weather conditions: air temperature 75 degrees, relative humidity 45 percent, barometer 30.05 inches, adjusted altitude 1,716 feet.


Psn--Num--Class-Driver, Home Town, Machine-----------------ET---Index---(+/-)

1 3321 B/SA Marion Stephenson, Williamsport IN, '15 C 10.167 11.25 -1.083
2 L177 FS/C Leonard Lottig, Meyersdale PA, '19 Camaro 9.227 10.30 -1.073
3 5942 FS/C Ryan Montford, Wichita KS, '13 Camaro 9.236 10.30 -1.064
4 507 A/S Lynn Engels, Watertown SD, '67 Corvette 9.906 10.95 -1.044

Nice Vette and quick. Tri-power to boot.

[RALLY]

Originally Posted by ELEFUNTMAN

I ran NHRA stock eliminator many years with my 340 sixpak. Made tons of power, many class wins and NHRA records in C/SA, D/SA. Gave everyone fits, they were glad I gave it up. Every time I showed up, “random” tear down. They took the fun out of it. The 3 Holley set up couldn’t be beat, back then anyway! I would love to have the set up on my Z28!

Those 340 engines were strong and quick. And the six pack for sure made it haul. Those carbs helped top end power. Chrysler ran a lot of dual carbs with the 413-426 Max Wedges and Hemi powered engines. The cross ram intakes they designed helped push air and fuel quicker.