When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Plus I don't think this 306 is going to make over 350 hp. DD2000 seems to think it will make 370 hp but I think it will make over 300hp but under 350hp.
What kinds of modifications are on this engine?
Originally Posted by Rusty_S
As far as the noise on electric fuel pumps goes, you have to mount them in rubber isolators. Ive had some pumps mounted firm and they would make noise like crazy, such as the Holley Red/Blue Electric, even the rubber isolator on the strap around the pump wasn't enough to stop the noise. Took some rubber feet and mounted the mount bracket with a rubber isolator and it was quiet as could be just a slight hum you could hear but not over the exhaust.
I once had an old electric fuel pump made I think by Holley that was pretty noisy when mounted directly to the inner fender. I found these rubber isolators that I placed between the pump and fender, and that reduced the noise to a tolerable thud-thud-thud from a really grating ping-ping-ping.
When that pump failed, I re-installed the original mechanical pump to get me going again. In the mean time, I got a couple of cheap electric pumps from Summit that I thought I would use. But just running them on the bench showed they were much noisier than the old Holley that died. I was thinking that in order to suppress those noises, I would have had to wrap them in rubber, then a layer of lead; I returned them.
Recently, my original mechanical pump developed a leak; it was 50 years old, so it's passed its life expectancy. As another stop-gap, I purchased a Spectra Premium from my local Pep Boys for like $16. It was physically identical to the original, so the lines all hooked up with no changes. It's rated at 25 gph, and I have not noticed any fuel starvation yet, though I did not try to run it at WOT for more than a few seconds at a time.
So I'd like to find a good electric pump that won't drown out my engine, or blow my whole car budget for the year.
As far as the noise on electric fuel pumps goes, you have to mount them in rubber isolators. Ive had some pumps mounted firm and they would make noise like crazy, such as the Holley Red/Blue Electric, even the rubber isolator on the strap around the pump wasn't enough to stop the noise. Took some rubber feet and mounted the mount bracket with a rubber isolator and it was quiet as could be just a slight hum you could hear but not over the exhaust.
I never mounted either pump on rubber bushings and like I said before, neither are noisy. These are the small square electrics, not the high performance ones you'd pick for drag racing. You can't hear either with the engine running. 30 gal/hr works out to getting 2 mpg at 60 mph. You'll never use that much in day to day driving.