im thinking about changing out the intake on my 302. currently i have a holley 600cfm, i dont know anything else of about it, and a performer manifold. in my garage i have a edelbrock 600 cfm that i bought a while back for another car, along with a performer RPM manifold. what should i put on my car. shes a mild lil motor. shes a daily driver but i like to go so i want good power. ive heard holley has better performance but they go out of tune..which i agree. i have to tune my like every two weeks. so suggestions???
edelbrock or holley?
- Thread starter 19mustang65
- Start date
HistoricMustang
Active Member
MustangMatt1966
New Member
i dont know, i have the edelbrock 600 cfm carb and performer rpm intake and i havent had any problems, i also have edelbrock performer alum heads, i guess you can say i like edelbrock and i am a little partial
If you really want to go with what you have on hand, I vote the RPM and holley. Either send it off and get it professionally tuned or get a good book and learn. I know I've learned a lot and just about have mine purring.
If you want something diffrent I would suggest a demon and air gap...but thats just what I'm going to do when I get my AFRs next year
If you want something diffrent I would suggest a demon and air gap...but thats just what I'm going to do when I get my AFRs next year
pabear89
Active Member
But I might try a Demon.
SadbutTrue
Founding Member
best performance will be had with the holley card and performer rpm intake. The edelbrock carb will sacrifice some ponies but be easier to maintain.
mdjay
Premium Sponsor
The Holley is truely a better performer but not as consistent. The Edel is very consistent, but not as much power. However, I'd ditch them both for the Demon! I was very impressed when I changed over.
SadbutTrue
Founding Member
ratio411
Founding Member
1320stang
Founding Member
That's the FIRST part of a Hollley I get rid of 
1967coupe
New Member
Out of the 5 stangs I've had I've had 3 Holleys and 2 Edelbrocks. I had some minor tuning issues with the first 2 Holleys but the third made me switch. The car would run great one day and the car would barely run the next and then back again. Worst part is these were BRAND NEW carbs. After 2 yrs. I gave up and got an Edelbrock. With these carbs it seems like set it and forget it...for me at least. The next carb I buy will be a Demon. Just my .02.
ratio411
Founding Member
The RPM is considered a "high rise" intake.19mustang65 said:
That is not a very technical term though.
The more correct terms would be single plane, dual plane, tunnel ram, 180 degree, etc...
You can have a low or high rise anything and it doesn't make nearly the difference as the other terms.
To the question of which is best for you, that all depends on your combo and what you primarily do with your car.
For all around street manners and rv cam, the RPM is a good intake. In your shoes, I would have to be really unhappy to go and remove that intake and start experimenting with new ones.
Dave
Edit: The carb spacers are generally a 'band-aid' for an intake that lacks performance in a desired rpm range.
A four hole spacer adds torque and throttle response by giving the carb a stronger vacuum signal at the throttle blades. The open spacer does nothing for vacuum signal to the carb, but adds plenum area for higher rpm operation. This can make the low rpm response a little softer and may require a larger accellerator pump in some cases.
The taller the spacer, the more magnified these qualities become.
My experience with the RPM was that it was a very mild intake and lacked top end, so I ran mine with a 2" open spacer. It added a few usable rpm up top, but not much.
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