C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old Jan 20, 2025 | 01:06 PM
  #261  
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Double tap
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Old Jan 20, 2025 | 01:08 PM
  #262  
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389 -3.75 stroke, 60 over, 11.3:1 compression, all forged lower parts, AFR 195 eliminator street heads, 230/236 .540/.550 lift roller with 1.6 Harlem Sharp rockers. Dual 500 Edelbrocks, chrome re-pop MT valve covers.

1-7/8 Doug’s headers and side pipes.


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Old Jan 20, 2025 | 03:29 PM
  #263  
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Wish I had that crossover with the thermostat in it
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Old Jan 20, 2025 | 06:29 PM
  #264  
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Rescue I know you are creative
Sounds like a perfect piece to have proto-typed in a 3-D printer, and then have an aluminum one made from the CAD file.
Done!

Or... saw the water section off of an existing manifold.

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Old Jan 20, 2025 | 06:50 PM
  #265  
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My manifold has 1/2 inch NPt fittings at the front and rear. I am looking into Blower remote thermostats as well as making my block into parallel cooling and using the rear 1/2 inch NPT fittings as well, then tying them all into the remote housing as well as incorporating the bypass as well
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Old Jan 20, 2025 | 08:29 PM
  #266  
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Originally Posted by Stormin_Normin
389 -3.75 stroke, 60 over, 11.3:1 compression, all forged lower parts, AFR 195 eliminator street heads, 230/236 .540/.550 lift roller with 1.6 Harlem Sharp rockers. Dual 500 Edelbrocks, chrome re-pop MT valve covers.

1-7/8 Doug’s headers and side pipes.
Looks like a thirsty engine.
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Old Jan 21, 2025 | 09:39 PM
  #267  
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Default 1971 lt-1

Stock 1971 LT-1 that i recently bought.

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Old Jan 22, 2025 | 08:31 AM
  #268  
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Originally Posted by Rescue Rogers
Ive got that intake....making it work with Weber DCo 50 carbs eventually
post 1540 I mention it and it makes sporadic appearances through out the rest of the thread
https://www.corvetteforum.com/forums...grades-53.html
Have you looked at something like this? Jenvey makes these-













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Old Jan 22, 2025 | 10:40 AM
  #269  
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I love your unique manifold Rescue.
But it is hard to beat the look of old-school downdrafts on a BBC!

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Old Jan 23, 2025 | 05:34 AM
  #270  
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For a while i liked the down drafts more, then for some reason i just fell in love with the crossram look. And since i cant find a crossram manifold that was reasonable, and then the gooseneck showed up, I jumped on it.
As for goiing back to EFI, electronics have soooo many ways to be an issue I am done with them for a while. Maybe someday I can go back but I love the mechanics of a carb
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Old Jan 26, 2025 | 05:11 PM
  #271  
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Default My 467

467 built by Mark Jones in my 1970 vert. Backed up by Tremec TKX 5 speed



Old Jan 26, 2025 | 06:19 PM
  #272  
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@wvleon Very nice, clean and should be with plenty of power and gearing!
Question…that trans tunnel shielding. Aftermarket? How is it held in there? Adhesive?
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Old Jan 26, 2025 | 08:14 PM
  #273  
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Originally Posted by Richard454
Have you looked at something like this? Jenvey makes these-









Jenvy only advertise inlets for LS series Chevys - no big block manifolds
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Old Jan 26, 2025 | 08:52 PM
  #274  
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Default Trans tunnel insulation

The trans tunnel kit is held in place by some adhesive as well as tabs on tunnel itself that help clip it in place. Super simple to install prior to engine and trans install.
so far I feel no heat in cabin. Interior is fully insulated and headers are ceramic coated.
last thing I need in Phoenix is more heat in the cabin
I believe I bought the insulation from Summit
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Old Sep 19, 2025 | 11:11 PM
  #275  
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It’s been a little while since this thread has seen any updates, so I thought I would give it a push to see what else there is out there we haven’t seen.
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Old Sep 20, 2025 | 12:27 AM
  #276  
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This is my current setup, although I expect it to change frequently.



SBE 1976 L48 with 1979 L82 valve covers, Lunati 601012 cam, Flotek aluminum heads, Edelbrock 2601 intake, and an aftermarket open element air filter. Doug’s stainless steel side pipes/headers with custom braided spark plug wires.

Other than the engine I have a spreader bar, deleted the evaporator box, and coated the firewall with bedliner.
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Old Sep 20, 2025 | 07:11 AM
  #277  
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All aluminum 535" (4.615x4.00). 850 HP on pump gas

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Old Sep 20, 2025 | 07:26 AM
  #278  
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Originally Posted by leigh1322
This is a I-wish-it-really-happened picture!

Prototype SOHC 427 BBC ~600 HP

Rescue should like the injectors!
I cant believe i never updated this page




Finally figured out the magic for the tune, 44mm chokes, .070F8 jet with the idle air bleed enlarged. Figure with the individual runners it 580hp and 541 ftlbs at the flywheel.


As for wishing it happened, heres a pic of Zora with his hemi BBC prototypes.


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Old Sep 20, 2025 | 11:15 AM
  #279  
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Four deuces and a 4 spd and an L46…


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Old Sep 20, 2025 | 12:10 PM
  #280  
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Originally Posted by ML67
All aluminum 535" (4.615x4.00). 850 HP on pump gas
Now that’s impressive!!!
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