351 cleveland install

flatred46 · #1 (**permalink**) 02-26-2007, 05:18 AM

I am installing a cleveland in my classic roadster, I presently have a 302 in it and I am wondering what changes must be made. I am concerened about height! If anyone can give me some pointers I would greatly appreciate it.

What kind of intake and what carb would be a good match?

Thanks guys

Phil

cobrabobby · #2 (**permalink**) 02-26-2007, 07:12 AM

Should be a direct bolt in. Lots of intakes are available at different
heights but a safe bet for height and excellent performance would
be a Blue Thunder dual plane. You didn't specify 2V or 4V heads.
If price is an issue check E-bay for Cleveland parts and all kinds of
intakes are available there. Even Edelbrock has a relatively new
Air-Gap available for the 4V Cleveland. Depends on the performance
level you are seeking.
Bob T.

lovehamr · #3 (**permalink**) 02-26-2007, 07:41 AM

Don't forget that the headers will have to be changed. Since the Cleveland is no higher than the 351W and alot of people are using them, I wouldn't think that height would be an issue. Well that is as long as you don't put a tunnel ram on it or something else crazy! LOL As far as intake and carb go; your over all combo should dictate that. Where do you want the power band? Anything up to 6000rpm should be OK with the stock 4V intake (you do have a 4V engine don't you?) over that I would suggest one of the single planes from Edlbrock(SP), Wiend(SP) etc. Here is a good link for alot of info on the 335 series (Cleveland) in general:
http://www.network54.com/Forum/119419/

Hope that helps, Steve

Daniel Jones · #4 (**permalink**) 03-01-2007, 10:51 AM

> What kind of intake and what carb would be a good match?

That depends upon the heads you are using. Do they have 2V, 4V or
aftermarket (AFD, CHI 3V, Ford Motorsport or Brodix high ports, etc.).

> Lots of intakes are available at different heights but a safe bet for
> height and excellent performance would be a Blue Thunder dual plane.

I would have said the same until I dyno'd a mild 408 cube 351C-4V
stroker recently. We tested a ported Ford aluminum dual plane (similar
to Boss 351 intake but with Holley carb pattern), Edelbrock Torker,
Blue Thunder and a Holley Strip Dominator. The Blue Thunder performed
worst and was down 40+ HP to the Strip Dominator. I can attached a
post with the details if anyone is interested. The ported Ford intake
did surprisigly well. Engine was just shy of 500 HP on the best pulls.

> Even Edelbrock has a relatively new Air-Gap available for the 4V Cleveland.

The Edelbrock Air Gap intake is for 2V ports though it will bolt up
to a 4V head.

Here are some intake heights that might come in handy:

Edelbrock F-351 & Performer 2V/4V 3 1/2 4 3/8
Weiand Xcelerator 2V 4 3/16 5 1/8
Holley Strip Dominator 4 5/16 5 3/8
Blue Thunder 4 7/16 5 3/8
Ford aluminum 4V 3 1/4 4 3/8
Offenhauser 360 4V 3 1/2 4 1/2
Weiand tunnel Ram 9 1/16 9 3/8
base only 6 1/4 6 1/4
top only 2 3/4 3 1/8
Motorsport A351 (Roush) 6 3/4 6 3/4
A331 (Edelbrock version, not Roush) 4 3/8 5 5/16

Dan Jones

flatred46 · #5 (**permalink**) 03-01-2007, 04:47 PM

Thanks for all your help guys!