What have YOU being doing or are you planning to do with your Vette?

James Vette

CCCUK Member
I'm pretty sure I don't have a stock exhaust fitted because it's defeaningly loud driving with the t-tops on. I really want to go through the entire car in the spring.
 

Chuffer

CCCUK Member
I'm pretty sure I don't have a stock exhaust fitted because it's defeaningly loud driving with the t-tops on. I really want to go through the entire car in the spring.
You should be able to tell if your exhaust is stock or not by just looking at it and comparing it to what is the standard spec for your car . Plenty of info on the web .
 

James Vette

CCCUK Member
Once warmed up it sits at 900-1000rpm. I can't remember if I had my foot on the gas when it stalls but it was under 15mph. I've only driven it during these past few weeks so relatively cold weather. It is a holley so I will check that.
 

Chuffer

CCCUK Member
Once warmed up it sits at 900-1000rpm. I can't remember if I had my foot on the gas when it stalls but it was under 15mph. I've only driven it during these past few weeks so relatively cold weather. It is a holley so I will check that.
900 - 1000 rpm idle when warmed up sounds rather high to me as I believe yours is a manual transmission from what you have said in other posts . My old Holley sometimes caused a stall when pulling away at low revs even when warm so your carb set up / vacuum issues might be the problem . Now I run a brand new 650 cfm Edelbrock I have no problems and my idle with auto in Park or Neutral is 500 / 600 rpm which is how I like it as can`t abide `racey ` idle speeds .
 

Mad4slalom

CCCUK Member
I bought a 78 many years ago which had a cutting out issue when I tested it , vendor said he had fixed it but it cut out again with a big backfire about 4 miles from his place. . Lost confidence and got my money back. That had cherry bombs and was unbearingly loud and droney. The standard mufflers are just the right sound imo .👍
 

Roscobbc

Moderator
Once warmed up it sits at 900-1000rpm. I can't remember if I had my foot on the gas when it stalls but it was under 15mph. I've only driven it during these past few weeks so relatively cold weather. It is a holley so I will check that.
If stalling when pulling away and its an auto (or manual for that matter) it'll be an insufficient 'squirt' from the accelerator pump jets - specifically the primary squirters. A tuned engine will need much more 'squirt' than a stock engine. I the carb is a generic bolt-on less expensive Holley it may run quite lean. The stalling will tend to be more noticable in cold weather. Check there's no crud blocking the jets. There should be a level of adjustability with the pump actuating mechanism. A new carb will come with several operating cams - you can choose one that either gives a smaller 'squirt' over a longer duration.......or a shorter duration, (but higher volume output). Even the one fitted can be tweaked to give a higher and quicker output. Adjust the operating lever so there is minimal clearance between it and the cam. Could be you need a 'squirter' with larger jets (more fuel to cover the 'bogging') - you'll get there from American specialists. We're not talking about huge volumes of gas here, just a few CC's - won't make any difference to fuel economy.
 

Corvette

CCCUK Member
Don’t forget James’s car has a hi lift, therefore lumpy camshaft, so shouldn’t stick around at 15mph! James you need to read up about ‘launching’ your car off the line and keeping your foot buried, big cam, Dart heads with 2.02” valves, when you get confident in that car you’ll love it.
 
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