Holley or Edelbrock carb: which and why?

[KevinW]

I'll need a 4 barrel carb for my cleveland, that will most likely be mated to an edelbrock performer manifold. Maybe rpm version? I have no idea which to choose - on the RV8 I think the carter/edebrock is the prefered option, for ease of use and better performance. What about SBF?

Kevin

[wilf]

Same thing really - a Holley has more ultimate adjustability and BHP than an Edlebrock carb, but the Edlebrock is far more user friendly, and easier to adjust.

[dingocooke]

An Edelbrock tends to comes out of the box very rich indeed, and for my money theres more experience and parts out there for the Holley, you can buy some great books on setting the Holley up; so Id go Holley.

Im guessing your going 650CFM on the 351C? (thats what mine has sitting on its Edelbrock 351-2V manifold)

[427FE]

I prefer Hollys for ease of jet change and adjustability.

How modified/tuned is your engine ?

Regards

Dave

[KevinW]

thanks chaps.
aiming at about 300bhp, max 330-350 i would guess - I'm still learning.
2V (open) heads, 280 cam, intake as decribed. maybe roller rockers, I dont know.
plannong on 600 cfm, based on the formula back in one of the threads. (CID X max revs)/some number like 3450)

sounds like edelbrock would suit me better at least initially.
any comments on manifolds?

Kevin

[ldtopham]

I have a Holley a top my Cleveland. Once I had read a 'How to tune' book, the tuning was straight forwards so long as one adjustment at a time is made. Holley for tune ability and Edelbrock for ease of ownership.

What kit are you fitting the 351 in to? Reason I ask is that even with the Performer (which is just an aluminium version of the cast iron 2v manifold), the carb base height doesn't leave much room for a decent depth airfilter before bonnet clearance becomes a problem. With a decent quench (zero deck) and 280H cam you will be bang in the HP range with nearly 400ftlb of tq The last 351C I saw on the dyno of a similar spec was swallowing 600cfm so the Holley 670 Avenger would be my first choice. With care on the build tolerances your goal is easily achievable. With the RPM air gap you would see more as the performer isn't much cop for the ability of the heads. I'm using the performer as the height is damn tight.

Best of luck,

[Dutch Paul]

Originally Posted by ldtopham

I have a Holley a top my Cleveland. Once I had read a 'How to tune' book, the tuning was straight forwards so long as one adjustment at a time is made. Holley for tune ability and Edelbrock for ease of ownership.

What kit are you fitting the 351 in to? Reason I ask is that even with the Performer (which is just an aluminium version of the cast iron 2v manifold), the carb base height doesn't leave much room for a decent depth airfilter before bonnet clearance becomes a problem. With a decent quench (zero deck) and 280H cam you will be bang in the HP range with nearly 400ftlb of tq The last 351C I saw on the dyno of a similar spec was swallowing 600cfm so the Holley 670 Avenger would be my first choice. With care on the build tolerances your goal is easily achievable. With the RPM air gap you would see more as the performer isn't much cop for the ability of the heads. I'm using the performer as the height is damn tight.

Best of luck,

Lee

Out of curiosity, which Holley tuning book did you use?

[ldtopham]

Originally Posted by Dutch Paul

Lee

Out of curiosity, which Holley tuning book did you use?

http://cobraclub.specialistcommuniti...=holley+tuning Toward the bottom of my first post there is an ISBN number.

HTH. Looking at your recent vid, your off idle stumble isn't as bad as mine was

[ldtopham]

Lots of good info here too http://www.bob2000.com/carb.htm

[Dutch Paul]

Originally Posted by ldtopham

http://cobraclub.specialistcommuniti...=holley+tuning Toward the bottom of my first post there is an ISBN number.

HTH. Looking at your recent vid, your off idle stumble isn't as bad as mine was

Lee

Thanks for the link.

I really need to set the damn thing up better.
It starts perfect hot or cold, but when cold it runs like an absolute bag of sh1t. I`m blaming the choke(electric) and just reading up whether to adjust it lean,disengage the linkage inside or remove the whole fecking lot!!!
There is a slight cough just off idle, but dumping the clutch at 2000revs cures it. (only joking)
Even the timing is probably out a bit - I only set it by ear seeing as the first time I got my new timing light out to set it - some idiot (me!!) dropped it and now it don`t work.

I`m trying to organise through a mate of a mate etc access to a stretch of new road(about a mile and half long) built by the local powerstation that isn`t in use. If I can get permission to use the road, a new timing light, A/F meter and vacuum gauge I should be able to set it up something like. The carb is still "out of the box" set up Holley 670 Street Avenger.
After 500 miles running in, a trip to a decent dyno is planned.