Engine upgrades for a 70 454
Thread Starter
Instructor
Joined: Jul 2001
Posts: 137
Likes: 0
Engine upgrades for a 70 454
I would like any feedback on performance upgrades for this motor. The original heads are in dire need of an overhaul. What I had in mind was to yank the old ones and replace them with something from GM Performance. Any suggestions on what heads would be a good "match" for this motor? I'm looking for a simple swap of heads with little or no other modifications, although I'm open to carburator and intake changes as well. Thanks
Racer
Joined: Jun 2001
Posts: 422
Likes: 0
Re: Engine upgrades for a 70 454 (mulchie)
I sent my heads to (Heads By Rick) in hollywood Florida He has over 30 yrs experience in mods. he took my original heads and made a slight compression change and when i recieved them back I could'nt believe they were the same heads he also recommended a cam. The other mods i made were the torker II intake and edelbrock carb 1605 with elec choke, every thing else was left original since i only had 70,000 mi on the car :yesnod: Runs like a dream!!!!!!! :D :cheers:
Le Mans Master
Joined: Apr 1999
Posts: 6,134
Likes: 46
From: Raleigh North Carolina
Re: Engine upgrades for a 70 454 (mulchie)
mulchie-
Which 454 do you have?
What is the port configuration?- Rectangular or oval?
Although you can mix certain heads/intakes, it's a good idea to keep the two "port matched".
This can determine which heads you are targeting.
Also, don't forget that any milling you have done will shift the port alignment between the intake & the heads. Sometimes, this causes sealing and occasionally performance problems.
Which 454 do you have?
What is the port configuration?- Rectangular or oval?
Although you can mix certain heads/intakes, it's a good idea to keep the two "port matched".
This can determine which heads you are targeting.
Also, don't forget that any milling you have done will shift the port alignment between the intake & the heads. Sometimes, this causes sealing and occasionally performance problems.
Racer
Joined: Jun 2001
Posts: 422
Likes: 0
Re: Engine upgrades for a 70 454 (mulchie)
If you want a copy of my invoice i can send it to you this evening from the house. or if i can fax it after lunch from my office, The invoice has the head ,cam,and pricing info on it. BTW I don't know rick personally but if you drag race anywhere in florida you will recognize his name especially if you race IHRA. You probably don't race but he does a lot of mild mods for street use from heads to complete engines. Most guys i know locally use him.... as far as new heads i don't know because this is my first vette and i wanted the modified sleeper look (stock)....
Give me a fax or email and i will get it to you :cheers:
Give me a fax or email and i will get it to you :cheers:
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
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Instructor
Joined: Jul 2001
Posts: 137
Likes: 0
Re: Engine upgrades for a 70 454 (71DropTop)
Sorry, my mistake. They are indeed oval ports. I'd rather keep the original heads in their original condition and purchase new ones to run for a while. All I've looked at to this point is GM Perf heads.
Burning Brakes
Joined: Dec 2000
Posts: 962
Likes: 0
From: Carlisle PA
Re: Engine upgrades for a 70 454 (mulchie)
Its an original 454 with RECTANGULAR ports. What do you think?
Keith
Drifting
Joined: Nov 2001
Posts: 1,469
Likes: 6
From: 68 427 4.11s Roadster
Re: Engine upgrades for a 70 454 (70PurpleLS7)
Something I wish I had the money for is a 32 valve head set. They are made but very pricey, I never saw any mention of an intake or exhaust, if they were needed or if stock would fit.
