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BB rebulid advice

Forum: C3 Engines, Driveline and Handling

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BB rebulid advice

Posted: 1/17/05 7:44pmMessage 1 of 16
R
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Grandville, MI - USA
Joined: 5/8/2004
Posts: 140
Vette(s): 1968 427/390 Coupe
I'm just finishing up the suspension on my 68 427/390 and wanted to do some planing on the engine rebuild and was looking for some imput.
I plan on replacing the carb, intake, dist, heads? this car had 390hp new and if I end up with 400 that's all I'm looking for.
Any thoughts?
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BB rebulid advice

Posted: 1/17/05 8:11pmMessage 2 of 16
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Hot Springs, AR - USA
Joined: 4/24/2004
Posts: 3236
Vette(s): 69 Conv #'s match 427, TKO-600/.64, 3.36HD-Posi, HT, T/T, PS, PB, PW, SP, Leather, Comp XE264HR & Roller Rockers & Lifters, Air-Gap RPM intake, Holley St Av 770 VS, MSD 6AL+Dist+Blaster SS, K&N, Jet-Hot Hooker Side-Pipes, Steeroids, Al Rad, Spal Fans
 RHeyboer said: I'm just finishing up the suspension on my 68 427/390 and wanted to do some planing on the engine rebuild and was looking for some imput.
I plan on replacing the carb, intake, dist, heads? this car had 390hp new and if I end up with 400 that's all I'm looking for.
Any thoughts?
 


thats not aiming very high for the amount of money youll spend to replace heads and up..

how about cam ... which is more important to you..

low end torque or high end horses
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BB rebulid advice

Posted: 1/17/05 8:19pmMessage 3 of 16
R
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Grandville, MI - USA
Joined: 5/8/2004
Posts: 140
Vette(s): 1968 427/390 Coupe
What's important to me, can I say both?
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BB rebulid advice

Posted: 1/17/05 9:05pmMessage 4 of 16
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portland, OR - USA
Joined: 11/16/2004
Posts: 107
Vette(s): Tubbed 1977
If I were you, I go with a couple of 800 dominators on a tunnelram. But thats just me |biggrin|

http://www.fast77.com
If it ain't broke......fix it till it is
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BB rebulid advice

Posted: 1/17/05 9:05pmMessage 5 of 16
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CUYAHOGA FALLS, OH - USA
Joined: 12/2/2003
Posts: 6424
Vette(s): 1975 C3 Red, T-Tops, Black Interior. All I need is time and money! Getting there!
Nope, gotta choose. You can get more of both, but one will be stonger than the other. And if you want a LOT of one, the other will suffer a bit.
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BB rebulid advice

Posted: 1/18/05 4:47amMessage 6 of 16
R
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Grandville, MI - USA
Joined: 5/8/2004
Posts: 140
Vette(s): 1968 427/390 Coupe
Well then I would say high end horses. now what do you think?
Carb?
Intake?
Cam?
Dist?
Heads? or keep stock?
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BB rebulid advice

Posted: 1/18/05 7:23amMessage 7 of 16
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Portland, TN - USA
Joined: 4/29/2003
Posts: 805
Vette(s): 1972 Coupe Anything, but Stock and more mods to come! SSBC Force 10 Brakes, 3.73, TH350, 355 CID, Rack and Pinion, Vette Brakes suspension front and rear.
I would choose torque mainly because torque is what makes the car go down the road.

I would look at a top end kit. Brodix, Dart, Edelbrock, Trick Flow, Holley and others have kits that are all mapped out that should make good power for the money.
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BB rebulid advice

Posted: 1/18/05 10:17amMessage 8 of 16
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Frederick, MD - USA
Joined: 9/8/2003
Posts: 3398
Vette(s): 1969 convertible L71 427/435 4-speed black interior
Be very sure what you want out of your engine and how you intend to drive it. The previous owner of my '69 427/435 installed an L88 cam when he rebuilt the motor and it's barely civilized for the street. Very low engine vacuum and a very lopey idle. The spec sheet for the cam show its power band from 4400-7000 rpm's...I don't even drive it that fast to get the most out of the engine. I will say that when it passes 4000 rpm's you can really feel the power building up. What is nice is how people complain about ceiling tiles falling when I drive by.

Buy a camshaft with a useful power band for the type of driving you will do.
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BB rebulid advice

Posted: 1/18/05 10:50amMessage 9 of 16
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Hot Springs, AR - USA
Joined: 4/24/2004
Posts: 3236
Vette(s): 69 Conv #'s match 427, TKO-600/.64, 3.36HD-Posi, HT, T/T, PS, PB, PW, SP, Leather, Comp XE264HR & Roller Rockers & Lifters, Air-Gap RPM intake, Holley St Av 770 VS, MSD 6AL+Dist+Blaster SS, K&N, Jet-Hot Hooker Side-Pipes, Steeroids, Al Rad, Spal Fans
i agree with aftershark and gunslinger..

unless your planning to roadrace this thing go for torque

realistically most of us will never use a high horse cam on the street.. now on the strip its another matter..

one more question i need to ask before I can give advice..

what kind of transmission/gears ?

|UPDATED|1/18/2005 10:50:51 AM (AZT)|/UPDATED|
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BB rebulid advice

Posted: 1/18/05 11:04amMessage 10 of 16
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Grandville, MI - USA
Joined: 5/8/2004
Posts: 140
Vette(s): 1968 427/390 Coupe
The car has a automatic transmission with 3:08 gears.
Please note, I do not plan on racing this car but take it out for a long Sautrday drive to relieve stress.
I hope this helps.
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