Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
Am-Fm/map light National/Regional/Chapter NCRS "Top Flight"
#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
What pump would depend on the type of engine/carb set-up you have. It's best to mount electric pumps as close tot he tank as possible...most of them are designed to push fuel, not pull. When I got my '74, there was an electric pump mounted to the rear bumper bracket, and wired directly into the hot side of the electric window circuit breaker! It was one of the first thigns I got rid of, too.
____________________________________ Joel Adams C3VR Lifetime Member #56 My Link
I am not crazy about the idea but I need some way of keeping the gas lines from from boiling with the headers and thus causing a vapor lock. So I thought maybe an elect fuel pump rather than the manual which sits so close to the headers. I have insulation, the really good kind, wrapped all over the lines and around the the pump. But nothing helps. I even had to go with the Mean Green Starter which is smaller and does not heat soak, so I could start the car. After driving 15 miles or so and then turning the car off. and then trying to restart within 10 min. or so the car will
Prior to that with the regular starter it would not even turn over. The starter would get so hot and heat soak.
Keep in mind I live in Texas and the outside temp is sometimes 100 to 105.
Vette(s): 1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top
I put header wrap on my fuel lines this weekend and it worked for me so far..not sure ..maybe re routing the fuel lines away from the engine..starting at the pass side wheel where the fuel line comes in.. Maybe go up the fire wall then up to the carb..and wrap the heck out of the lines..with an electric pump of course..you can hook the pump up at the rear at the rubber tank lines...maybe find a speed shop down there in heat land that has ideas on what else you can do..we had a heat stroke here this summer so I think I did pretty good..I would put the relay away from heat also..I will look for a pump that might work for you..
Vette(s): 70 LT1 coupe, 69 350 HP coupe, 69 390HP 427 coupe, 71 LS5 convert, 85 coupe, 93 coupe
All the other problems you describe make me wonder if your engine is generating an abnormal amount of heat. You shouldn't have had such a serious starter problem, for example. I think you should thoroughly evaluate your cooling system, but especially have your tune checked, both air/fuel ratio, and timing.
Radiator was vated several years ago.. Water pump is replaced, Vette runs with water gauge showing 200 to 210. But it is about 190 when I ran a temp check from the engine. This was after 20 miles or so driving. No overheating problems.
Vapor lock does not stall the car, just after it is turned off the heat begins. Then it won't start for 20 or 30 min.
Maybe an elect fan to continue to run awhie, after engine is off. I have the electronic ign. rather than the points. No back fire, and last time the timing was checked it seemed fine.
I had this problem with my Holley carb. so this is why I went to the Eldebrock carb. It all works just fine except for the vapor lock or what seems to be loose of fuel after it is hot. Not the original engine. It use to be a 427 435hp with duces. Now it is just a 350. I am up to any suggestion on this. Right now the car is in the body shop for a complete makeover. Body that is. Soda Blasted and soon new paint.
Then back to th problem of Vapor lock.
I am just about ready to pull this engine and get a crate engine and see if my problems stop.
I have replaced all the seals around the radiator and shroud. I have a fan extension instead of the fan clutch. I was told this is as good as the fan clutch and will keep the radiator cooler. I have been looking for the article on the fan extension, but I haven't been able to find it.
This has really got me to thinking that since I don't have the fan clutch it does not continue to spin for awhile after the car is turned off. Perhaps that could be the problem???????
I found that the extension or adapter makes the fan spin continously for more cooling and bolts up in the same positon and replaces the fan clutch. So what is the problem with that. Fan Extension vrs clutch.
Corvette is a registered trademark of the General Motors Corporation(GM) &
Chevrolet Motor Division. Vette Registries, LLC is responsible for all site content (except for member submitted content or where otherwise
noted) and does not claim or imply that Chevrolet or
GM is responsible for Official C3 Vette Registry content. Vette Registries, LLC is independent from GM and is not affiliated
with, sponsored or supported by GM. Copyright/trademark/sales mark
infringements are not intended, or implied and are in fact used to support
GM, Chevrolet and Corvette.
Official C3 Vette Registry content is Copyright 2001-2017, Vette Registries, LLC. Content may not be reused without written consent. All Rights Reserved. NS
Corvette (Vette) Model Years on this site: 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982