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General Forums => The Mess Hall => Topic started by: CliffB on March 15, 2009, 03:11:46 PM

Title: Performance cam
Post by: CliffB on March 15, 2009, 03:11:46 PM

If I install this cam (#p4529658 specs are .450/.450 hydraulic lift----256/256 duration -- 40 overlap-- made by crane cams sold thru mopar). Would I have to fatten up the fuel mixture or could the factory computer compensate enough for it?

Title: Re: Performance cam
Post by: Bounty Hunter on March 15, 2009, 07:00:19 PM

I have a similar cam and the ECM seems to do fine.  But i also installed some Ford v8 injectors, with a few other mods.  The stock ECM can handle a cam change.

Title: Re: Performance cam
Post by: CliffB on March 15, 2009, 07:19:55 PM

Did it make a noticable difference?

Title: Re: Performance cam
Post by: jfrabat on March 15, 2009, 07:36:44 PM

Quote from: Bounty Hunter on March 15, 2009, 07:00:19 PM

I have a similar cam and the ECM seems to do fine.  But i also installed some Ford v8 injectors, with a few other mods.  The stock ECM can handle a cam change.

You also need to change the valve springs, right?  If so, what kind of springs do you need? Simply new stock springs, or stiffer ones?

Title: Re: Performance cam
Post by: Bounty Hunter on March 15, 2009, 10:27:41 PM

You need mopar performance valve springs that are rated for the increase in valve lift.  I'll post up a part number soon, but I think it's in the FAQ.

Title: Re: Performance cam
Post by: jfrabat on March 16, 2009, 12:00:55 AM

Quote from: Bounty Hunter on March 15, 2009, 10:27:41 PM

You need mopar performance valve springs that are rated for the increase in valve lift.  I'll post up a part number soon, but I think it's in the FAQ.

Which one are they?

P4529214     Cylinderical
P4529215     Conical

Spring retainers
P4529216 Cylinderical Valve Spring
P4529217 Conical Valve Spring

Felipe

Title: Re: Performance cam
Post by: Bounty Hunter on March 16, 2009, 09:58:34 PM

I used:
Springs:   p5249464
Retainers: p4529216

Title: Re: Performance cam
Post by: Matt vs YJ on March 18, 2009, 09:16:33 PM

Quote from: Bounty Hunter on March 16, 2009, 09:58:34 PM

I used:
Springs:   p5249464
Retainers: p4529216

Did you need to have the spring seats machined, or are these a direct swap?

Title: Re: Performance cam
Post by: Bounty Hunter on March 19, 2009, 10:06:12 AM

Direct swap, no machining.

Title: Re: Performance cam
Post by: YJmechanic on March 31, 2009, 12:10:25 AM

clifford makes them too if you need/  i know for a while the mopar stuff was hard to find/  thats why i have clifford stuff in mine