AFR165 with FRPP E cam

Butterfinger · Feb 10, 2011

Anyone with a stock short block running AFR165s and a FRPP E cam? I've got the stock pistons and want to make sure the piston to valve clearence will be ok. I'm planning on using 1.6:1 rockers.

red87 · Feb 10, 2011

I thought this site was about mustangs.

oldno7 · Feb 11, 2011

now that was funny but i was wondering the same thing but with the afr185 cc

FastDriver · Feb 11, 2011

It should always be checked, but with AFR165s, you should be fine. I don't know about the 185s. My AFR 165s were run with a cam that had 5.5" lift intake and 5.6" on exhaust, 224/228 duration at .050, and 111LSA. That's more aggressive than an E-cam and it ran fine with 1.6 rockers. That was my first personal build and I didn't check the clearance, but it worked out.

FastDriver · Feb 11, 2011

oh, to the second guy, I'm sorry I can't answer based on personal experience, but it was my understanding that AFR185s require piston notching, which any machine shop should be able to do for you.

njoliver · Feb 11, 2011

they should be ok most 302 were notched after late 80s or something, but you ALWAYS should check it, its worth the extra 30 mins

NIKwoaC · Feb 11, 2011

red87 said:
I thought this site was about mustangs.

I'm not sure I get it...

FastDriver said:
5.5" lift intake and 5.6" on exhaust

You mean you had more valve lift than you had stroke?

Just kidding buddy, I realize you meant .550" and .560"

FastDriver said:
oh, to the second guy, I'm sorry I can't answer based on personal experience, but it was my understanding that AFR185s require piston notching, which any machine shop should be able to do for you.

The 185s have a 2.02" intake valve, which on an inline head, usually means notching will be necessary, BUT I have heard people claim to successfully run them without notching. It all depends on the cam there.

FastDriver · Feb 11, 2011

NikwoaC said:
I'm not sure I get it...

He was referring to a spam post that you can no longer see.

You mean you had more valve lift than you had stroke?

lol, yup, that cam was a bad MFer That's the secret

NIKwoaC · Feb 11, 2011

FastDriver said:
He was referring to a spam post that you can no longer see.

Ahhh, I see now.

FastDriver said:
lol, yup, that cam was a bad MFer That's the secret

Butterfinger · Feb 11, 2011

Now I need to figure out if I should go with the 58cc or 60cc. I've heard stick to as close to the 9.0:1 compression ratio but also to increase compression ratio since aluminum heads can dissipate more heat. Any suggestions?

FastDriver · Feb 11, 2011

If staying n/a go for the smaller chambers

Rick 91GT · Feb 12, 2011

I prefer the chamber design in the 58cc head. You usually run into radial issues with the 2.02 intake valve on a inline head (the stock notch is not wide enough)

Butterfinger · Feb 12, 2011

How much does the compression ratio increase with the 58cc heads verse the 60cc heads?

NIKwoaC · Feb 12, 2011

Butterfinger said:
How much does the compression ratio increase with the 58cc heads verse the 60cc heads?

Very little. Negligible. I'd explain how to calculate it, but honestly, it's much easier for you to just google compression ratio calculator and plug in your numbers and let the calculator do the work for you.

Butterfinger · Feb 12, 2011

If the compression increase is negligible, then is there any real gain?

FastDriver · Feb 12, 2011

NIKwoaC · Feb 12, 2011

Yea, I mean you're talking about a ~.2 increase in CR between the two. So there would probably be the possibility of a gain. What I was getting at though, is it's not like you're going to have to run race gas with the 58cc when you could get away with 87 octane in the 60cc. The difference is marginal between the two, so don't beat yourself up over it. Stock chambers can be anywhere around 61-64ish cc. Go with the 58, enjoy the little bit of CR it gives you, and have fun.

grainboy · Feb 14, 2011

Check your clearances with clay before you bolt them on. I had issues with a b cam and the 165 heads, with post 87 flat tops.

Butterfinger · Feb 14, 2011

Post '87 and the pistons weren't notched?

FastDriver · Feb 15, 2011

I think he means notched pistons.

BTW, grainboy, for sale offers should only be posted in the classified or IMed.

AFR165 with FRPP E cam

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