[Skip Fix]

I use that same color for most of mine also.

[jonmachota78]

Ta_man, have you been running 1.65's on the intake and exhaust? Theres been talk on this site the with good flowing heads, 1.65 may be too much on the exhaust side especially with a split pattern cam(like OF) . Something about over scavenging? May possibility pick up with 1.5's on the exhaust?

[ta man]

Originally Posted by jonmachota78

Ta_man, have you been running 1.65's on the intake and exhaust? Theres been talk on this site the with good flowing heads, 1.65 may be too much on the exhaust side especially with a split pattern cam(like OF) . Something about over scavenging? May possibility pick up with 1.5's on the exhaust?

It may be possible..but I'm pretty sure Dave has done enough dyno testing.I trust his judgement when he is the one porting and setting up the heads and supplying the cam.

[TCSGTO]

Originally Posted by ta man

It may be possible..but I'm pretty sure Dave has done enough dyno testing.I trust his judgement when he is the one porting and setting up the heads and supplying the cam.

Do you know what springs he's using? Mine have a polished, smaller diameter spring than the 99893's that have similar tension but are much lighter in weight.
Dave said he's had excellent results so far. I only have 4 dyno pulls on mine but there was no sign of valve float.

[ta man]

Originally Posted by TCSGTO

Do you know what springs he's using? Mine have a polished, smaller diameter spring than the 99893's that have similar tension but are much lighter in weight.
Dave said he's had excellent results so far. I only have 4 dyno pulls on mine but there was no sign of valve float.

I'm not sure,he did mention lighter retainers and keepers.

[Steve C.]

Some might be interested...

Exploring Rocker-arm Ratio and Cam-phase Tuning – Project Pure Poncho

http://www.hotrod.com/articles/hppp-...-phase-tuning/

Brings up the subject of less rocker ratio on the exhaust side. Keep in mind here Pontiac factory iron heads are in use. The exhaust-to-intake flow ratio of aftermarket cylinder heads might be a all different ball game.

.

[ponjohn]

Originally Posted by ta man

I'm not sure,he did mention lighter retainers and keepers.

Wonder if Dave would advocate using beehive springs?

[71 T/A]

What are specs on OF2?

[leeklm]

Originally Posted by 71 T/A

What are specs on OF2?

Dave is not publishing full specs. On the surface, it is the OF with higher lift, and slightly more duration.

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[Skip Fix]

My ported round port E heads liked 1.8 on the intake and 1.65 HS (1.71 actual) on the exhaust the best.

[PAUL K]

Originally Posted by Skip Fix

My ported round port E heads liked 1.8 on the intake and 1.65 HS (1.71 actual) on the exhaust the best.

Hi Skip, what happened when you tried more ratio on the exhaust?

[Skip Fix]

Paul I did not see your question back then-I only bought enough to do the intakes as they are pricey. I did have the 1.65 HS on both intake and exhaust and it picked up with just the 1.8s on the intake.

[hal101]

good luck sounds like you are dooing great

[71 T/A]

I think 10.78 at 125 and possibly better than that.

[leeklm]

You should be close. I need to add more weight to keep my boat at 11.5, even in marginal air!

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[71 Goatman]

ta man, I noticed you are running a nice cast aluminum valley pan. Just in the process of freshening my 462 with some KRE heads, after seeing yours am thinking of getting one. Do you run a PVC with that valley pan or did you connect it somewhere else?

[AG]

How are you allowed to run sub 11.50 w/o the required safety equipment?

[ta man]

Originally Posted by AG

How are you allowed to run sub 11.50 w/o the required safety equipment?

Easy tech on testntune nights.There are usually quite a few newer cars especially the Mopars running in the 10's.I do have a SFI balancer,flexplate,proper lugs on the axles.I've been torn between putting a rollbar in this one or find another roller that is setup.

[OCMDGTO]

Engine looks great, you are almost there!

[71 Goatman]

Thanks take man I am going to pick one up, like the idea of not bending, looks great too!