Engine Mods Outrageous Builds, High-Horsepower Modifications, strokers, and big cams for the Corvette

Three Big Block Questions...

Thread Tools
 
Search this Thread
 
Old Feb 8, 2002 | 08:29 PM
  #1  
bence13_33's Avatar
bence13_33
Thread Starter
Safety Car
15 Year Member
 
Joined: Aug 2000
Posts: 3,909
Likes: 26
From: Clymer PA
Default Three Big Block Questions...

I just received my order from Jeg's the other day and can now start assembling my engine! I do have some questions though:
A) I ordered 10 degree titanium retainers for my heads. Are these a must or overkill? $133 is an awful lot to spend on something I don't need. So if I don't need them I'd just as soon send them back.

B) I received my Comp Cams 294S solid lifter cam and matching valve springs with the order. The matching valve springs are double valve springs. Can I use umbrella valve seals (would you recommend them?), or do I need to have my heads machined for teflon valve seals? Which route do I need to go?

C) Who is going to have the faster vehicle ?

The Opposition:

- 1989 S10 Pick-up (Weighs 3100lbs w/ Driver)
- TH350 Transmission w/ 3500 Stall
- 3.73 Gears & Positraction
- Lakewood Traction Bars
- 377ci Small Block De-Stroker Motor
- 10-11:1 Compression Ratio
- World Products Sportsman II Heads (2.02/1.60 Valves)
- Heads Are Gasket Matched w/ Valve Job
- 296 Solid Lifter Cam (108 Lobe Seperation)
- Forged Rotating Assembly
- Weiand Stealth Intake w/ 750 Dominator
- M/T ET Streets (28-13.5-15s On 10" Rims)
- Open Header Exhaust Into 2.5" Exhaust Pipe

My Setup:

- 1976 Corvette Stingray (3650lbs w/ Driver)
- Borg Warner Super T10 4 Speed
- 3.36 Gears & Positraction
- 468 Big Block (454 + .060")
- 10.5-11:1 Compression Ratio
- "206" Closed Chamber Heads (2.19/1.88 Valves)
- Heads Gasket Matched, Bowls Blended (Came off a 454 Camaro running 10.90s in the 1/4)
- Comp Cams 294S Solid Lifter Cam (.595" Lift, 110 Lobe Seperation)
- Forged Rods, Pistons & Cast Crank
- Torker II Intake (Gasket Matched)
- Holley 850cfm Double Pumper
- Mickey Thompson 28-11.5-15s
- Open Hooker Header Side Pipes (2" Primaries Into 4" Collectors)

Something to keep in mind. I will be changing to a Tremec TKO 5 speed in the near future (3.27:1 1st Gear) but will be keeping the 3.36 rear end which will give me a 10.98 effective first gear. I know my engine is putting out more power than his but my two major problems will be:

1. My Car Being Nearly 600lbs More Than His
2. Hooking Up With The Standard Transmission

Any recommendations? I do have a TH400 out of a '73 Corvette that I could use, but I would have to cut my crossmember so it would be removable (do not want to do) and I really want a stick. So what do you think?
Reply
Old Feb 8, 2002 | 08:39 PM
  #2  
69 N.O.X. RATT's Avatar
69 N.O.X. RATT
Safety Car
20 Year Member
All Eyes On Me
Liked
Loved
 
Joined: Aug 2001
Posts: 3,892
Likes: 13
From: Pettis Performance 565 with two stages of Nitrous Supply nitrous 1.082, 4.61 at 155, 7.17 at 192
Default Re: Three Big Block Questions... (bence13_33)

As for 1/4 mile times a lot of that will be the driver. I think you would blow him away in the typical street race, from a roll. The Tremec will help your cause a lot :chevy
Reply
Old Feb 8, 2002 | 08:42 PM
  #3  
mountainmotor's Avatar
mountainmotor
Drifting
 
Joined: Jul 2001
Posts: 1,418
Likes: 1
Default Re: Three Big Block Questions... (bence13_33)

A=overkill-forged steel locks
B=machine for PC seals-the id of the springs will pull the umbrella seal up
C=truck-will leave hard on you and will never catch him
Reply
Old Feb 8, 2002 | 09:02 PM
  #4  
Gordonm's Avatar
Gordonm
Race Director
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
Default Re: Three Big Block Questions... (mountainmotor)

Your putting way to much time and effort into trying to beat this truck. You will have a very strong car with the motor you are building. A lot depends on the driver and hooking it up. Build the car for how you want it and don't worry about this truck. He will still be driving a S10 truck while you have a Corvette.
Reply
Old Feb 8, 2002 | 09:10 PM
  #5  
bence13_33's Avatar
bence13_33
Thread Starter
Safety Car
15 Year Member
 
Joined: Aug 2000
Posts: 3,909
Likes: 26
From: Clymer PA
Default Re: Three Big Block Questions... (Gordonm)

I know, I know....he is just soooo cocky and I want to beat him soooo badly. Judging by the majority of replys I probably won't race him, I don't want to give him the satisfaction of beating me :). You are right though I shouldn't be so worried about it, but I am...:(
Reply
Old Feb 8, 2002 | 11:01 PM
  #6  
mountainmotor's Avatar
mountainmotor
Drifting
 
Joined: Jul 2001
Posts: 1,418
Likes: 1
Default Re: Three Big Block Questions... (bence13_33)

Bence,
It is just the fact he has a fairly good motor,hi stall with automatic and slicks.No driving to that.Floor it and he will go.Hell,my wife could drive the truck.The deal is he wants to be a Dragon Slayer.Don't let him.Make him go fronm a 30 mph roll.I would say you would suck him down your carb then but thats impossible cause you will be ahead of him!
Reply
Old Feb 12, 2002 | 09:27 AM
  #7  
MassVette's Avatar
MassVette
Le Mans Master
10 Year Member
 
Joined: Oct 2000
Posts: 6,563
Likes: 2
Default Re: Three Big Block Questions... (bence13_33)

That intake manifold is going to kill serious H.P. on you; probably well over 50 H.P., compared to the typical hi-rise on that size motor. You're much better off with a single 850 annular speed demon 4bbl. dual plane hi-rise, IMHO.
I know, where's mine? The quads cost me some on upper end, but they sure are azz-kickin' GREAT on low and mid-range! And, I'm not a racer........

:yesnod: :chevy :chevy :yesnod:
Reply
Old Feb 12, 2002 | 04:07 PM
  #8  
korvetkeith's Avatar
korvetkeith
Melting Slicks
25 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: Jul 2000
Posts: 2,112
Likes: 2
From: Peoria IL
Default Re: Three Big Block Questions... (MassVette)

He doesn't have very good heads, if he doesn't have lots of head work he isn't making over 500hp. Challenge him to race on the street and the track. :smash:
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

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

 Joe Kucinski
story-1

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

 Verdad Gallardo
story-2

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-3

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

 Michael S. Palmer
story-4

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

 Joe Kucinski
story-5

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

 Michael S. Palmer
story-6

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

 Joe Kucinski
story-7

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-8

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

 Joe Kucinski
story-9

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

 Joe Kucinski
Old Feb 12, 2002 | 10:51 PM
  #9  
RatRacer's Avatar
RatRacer
Safety Car
20 Year Member
 
Joined: Aug 1999
Posts: 4,862
Likes: 118
From: Texas
Default Re: Three Big Block Questions... (korvetkeith)

Bence, you are going to get beaten on a regular basis if you run a stick against a high stall auto car. That's a fact. If you want to win drag races you need that TH400.

You also need to dump that Torker II and get an Air Gap RPM manifold and L88 hood.

You are heading down the road of mismatched parts otherwise.
Reply
Old Feb 13, 2002 | 10:28 PM
  #10  
bence13_33's Avatar
bence13_33
Thread Starter
Safety Car
15 Year Member
 
Joined: Aug 2000
Posts: 3,909
Likes: 26
From: Clymer PA
Default Re: Three Big Block Questions... (Cam Potter)

Cam:
Yea, I've come to understand that I am going to lose...but I'm not getting rid of the manual transmission. I'm building this car to have fun with, I enjoy shifting the gears and working the clutch. I think if I were to go with a higher intake I would probably go with the Holley Strip Dominator. For now I think I'm going to get the engine together with what I have so I can get it on the road and start enjoying it (I've been waiting for about 9 months now!). Thanks for all the input guys. :cheers:
Reply

Get notified of new replies

To Three Big Block Questions...





All times are GMT -4. The time now is 12:48 AM.

story-0
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-1
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-2
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-3
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-4
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


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

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-6
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-7
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-8
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-9
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE