1970 454 + TriPower + HEI ?

Reply Subscribe

Thread Tools

Search this Thread

Feb 8, 2016 | 01:10 PM

Tom454

Thread Starter

Le Mans Master

Joined: Apr 1999

Posts: 6,134

Likes: 46

From: Raleigh North Carolina

1970 454 + TriPower + HEI ?

Anybody have this exact combo? Seems the washer pump cover might cause an issue?

http://www.ebay.com/itm/Corvette-Tac...p=mtr#shpCntId

Feb 8, 2016 | 11:08 PM

74 LS4-454

Melting Slicks

Joined: Mar 2006

Posts: 2,248

Likes: 67

From: Warrington PA

Finalist 2020 C4 of the Year - Unmodified

Sounds interesting.......

Feb 8, 2016 | 11:41 PM

LT1driver

Le Mans Master

Joined: Oct 2000

Posts: 6,209

Likes: 33

From: Texas-out west

had a 70 454/390 in the day I added 400hp tri to and it was nice but had stock ignition, no hei then. no interference issued anywhere.

Last edited by LT1driver; Feb 8, 2016 at 11:42 PM.

Feb 8, 2016 | 11:52 PM

1Fordman

Drifting

Joined: Oct 2007

Posts: 1,317

Likes: 22

From: Marina CA

68 435 here with tach drive HEI and no clearance problems. A bit tighter fit than an original distributor but definitely workable.

Feb 9, 2016 | 06:17 AM

96 lt-4

Drifting

Joined: Oct 2005

Posts: 1,913

Likes: 48

From: Angier nc

I know you can't see it with the hood closed but the clear cap has never caught on for me.

Feb 9, 2016 | 07:28 AM

jim2527

Race Director

Joined: Apr 2003

Posts: 19,345

Likes: 654

From: Tampa, Florida

What about a small cap tach drive hei?

http://www.ebay.com/itm/Small-Cap-CH...VWTgRg&vxp=mtr

Feb 9, 2016 | 08:44 AM

Tom454

Thread Starter

Le Mans Master

Joined: Apr 1999

Posts: 6,134

Likes: 46

From: Raleigh North Carolina

Quote:

Originally Posted by LT1driver

had a 70 454/390 in the day I added 400hp tri to and it was nice but had stock ignition, no hei then. no interference issued anywhere.

I already ran that configuration with no problems. I'm looking to "clean up" the engine bay by removing the coil & bracket & center wire.

Feb 9, 2016 | 08:45 AM

Tom454

Thread Starter

Le Mans Master

Joined: Apr 1999

Posts: 6,134

Likes: 46

From: Raleigh North Carolina

Quote:

Originally Posted by 96 lt-4

I know you can't see it with the hood closed but the clear cap has never caught on for me.

Not concerned about cap color.... just fitment.

Corvette Stories

The Best of Corvette for Corvette Enthusiasts

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Joe Kucinski

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Verdad Gallardo

Top 10 Corvettes Coming to Mecum Indy 2026!

Brett Foote

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Michael S. Palmer

10 Revolutionary 'Corvette Firsts' Most People Don't Know

Joe Kucinski

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Michael S. Palmer

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Joe Kucinski

10 Most Common Corvette Problems of the Last 20 Years!

Joe Kucinski

5 MOST and 5 LEAST Popular Corvette Model Years in History!

Joe Kucinski

2027 Corvette Buyer's Guide: Everything You Need to Know!

Joe Kucinski

Feb 9, 2016 | 08:48 AM

Tom454

Thread Starter

Le Mans Master

Joined: Apr 1999

Posts: 6,134

Likes: 46

From: Raleigh North Carolina

Quote:

Originally Posted by 1Fordman

68 435 here with tach drive HEI and no clearance problems. A bit tighter fit than an original distributor but definitely workable.

The 70 has a 5 port washer pump... and a pretty big pump cover. Can you please post a pic of the washer pump and HEI relationship ?

Feb 9, 2016 | 08:50 AM

#10

Tom454

Thread Starter

Le Mans Master

Joined: Apr 1999

Posts: 6,134

Likes: 46

From: Raleigh North Carolina

Quote:

Originally Posted by jim2527

What about a small cap tach drive hei?

http://www.ebay.com/itm/Small-Cap-CH...VWTgRg&vxp=mtr

Trying to eliminate the remote coil.

Feb 9, 2016 | 09:27 AM

#11

rklessdriver

Safety Car

Joined: Apr 2005

Posts: 3,624

Likes: 431

From: Dale City VA

I have the big cap HEI in my 72 and it clears everything on the firewall fine (wiper motor/washer pump).

You can just see everything in the engine bay pretty good at the beginning of my video.

Obviously, I don't have the 3X2 intake, so I don't know about the rear carb that would be in front of it... but 1Fordman says in post 4 that it worked on his....
Will

Feb 9, 2016 | 10:57 AM

#12

502 C-3

Instructor

Joined: Mar 2014

Posts: 153

Likes: 21

I have the HEI w/tach drive on my 74 with the tri power. No interference.

Feb 9, 2016 | 02:45 PM

#13

Tom454

Thread Starter

Le Mans Master

Joined: Apr 1999

Posts: 6,134

Likes: 46

From: Raleigh North Carolina

It clears the rear TriPower carb by a hair. I have a 87 Vette HEI distributor I'm detailing right now and I have the Tripower on the bench. It's the five port washer pump cover that's the question. I guess I'll just pull the distributor out of the 454 and drop in the 87 distributor to see. Thanks for all the replies. I'll be back shortly.

...It fits.

Edit: