[Gach]

Originally Posted by tom s

will get them out tomorrow.Tom

Tom.. It looks like a Ford Engine...wink

Lynn keep up the good work. I like teasing Tom.

[Jim Robertson]

Pushrod length for this arrangement is 9.950". At this point a head gasket is not in place so that makes the pushrod right at 10".

Agree the o-rings around the pushrod would be a very difficult proposition to maintain seal and or provide support for pushrod. As measured at the top of intake port, the intake pushrods on this setup moves +/- .015" (toward the rocker stud) during the full sweep of the 1.65:1 Crane rocker with a .420" roller lobe.

Exhaust pushrod holes were located similarly (in line with rocker stud opening) but did not line up as well. Will move over about .100". See attached.

[SD421]

Originally Posted by slowbird

It is a lifter bore brace.

Should have known that. It looked different.
Thanks

[tom s]

Lou,better than a HALF assed ford engine!LOL

[NHRASuperStock455SD]

Originally Posted by gearbanger

I don't really see that being possible because the rocker goes througha sweeping motion and the pushrod angle is constantly changing. Good thought though. I really don;t see the pushrod tube being a big problem either. Maybe in a max effort deal where every cfm counts, but for the purpose I think Lynn has in mind, I don't see it as a factor.

Exactly correct GB. The sweeping motion has been calculated and measured. On my 455SD race engine that was in HPP magazine the sweeping action was 0.023. I think we can reduce that but it is completely doable....with the correct valve train componets. It is only viable in a race application as in a street engine it is simply not necessary. The CSA provided by a RA-V completely negates the concern of a pushrod tube. People shouldnt get anymore upset about the push rod tube than they do about the valve stem. The pushrod tube in a stock Pontiac is still there, just off to the side, so I just dont see much of a difference. If you are limited by CSA that is the bigger deal.

[ho428]

Originally Posted by Jim Robertson

Overall this 455 looks good with a set of V heads and single plane intake. Will have to mill a bit off the intake to achieve a optimum fit.

That's not Lynns new Intake is it?

[tom s]

that is my intake that Jim made for me from a Ford tunnel port intake.Tom

[60man]

Originally Posted by tom s

that is my intake that Jim made for me from a Ford tunnel port intake.Tom

Really......got a pic..

[tom s]

look at post 70,pg 4.Tom

[Jim Robertson]

Test fitted what I believe to be an original RA V guide plate on the heads. The stud placement on the Alum V head is definitely in a different location than these guide plates.

[Jim Robertson]

Since this is the RACE Section....

Get ya some of this!!

[mechanickeith]

Jim, What ya use to keep the dust out, a tennis ball???

[ho428]

Originally Posted by tom s

that is my intake that Jim made for me from a Ford tunnel port intake.Tom

Thanks Tom,

I'm waiting to see what Lynn does for an intake, like to order a complete top end, but it's gotta fit under a FGF hood.

Wish he'd uptake his intake progress...

[67copperbird]

I am interested in the intakes as well. I am in the same boat. I need to fit under a 400 style hood.

[NHRASuperStock455SD]

Originally Posted by ho428

Thanks Tom,

I'm waiting to see what Lynn does for an intake, like to order a complete top end, but it's gotta fit under a FGF hood.

Wish he'd uptake his intake progress...

We have the intake tooling done, but now we are trying to verify deminsions for machining. We dont have a stock intake to compare. Tom S was so good to send us Hogan, but not really a good indication of "stock". I really need a "stock" 400 RA-V intake to borrow for about a week for verification. I can make sure all my stuff fits together, but not something I dont have. We might have to do the first run of intakes without knowing if the exact numbers are right for interchangine with stock castings. If someone is willing, I can send you a shipper.

Lynn

[NHRASuperStock455SD]

Yike guys, I have stated several times that our single 4 barrel will fit under the stock hood. Dont know why that word isnt getting out? Please tell me where I am failing?

It also has a 4150 or a 4500 flange. We also have a fuel injection system(including intake) that has 1100cfm to 2000 cfm.

We are currently getting started on our aftermarket block (All Pontiac) 535 cu in crate motor twin turbocharged with fuel injection 2000 cfm. It will have our newly designed tubular factory exhaust manifolds with forward mound dual turbos. This will incllude air inlet mapping just like the 3.8 V-6 (691HP with 22 lbs of boost). We forecast 1600HP with a street buiild up, reasonble street cam profile, and minimal boost. With this set up we should be able to do double that initial HP setting.

[ho428]

Lynn,
I've believed you about it fitting. But given the amount of Race only interest, boosted interest etc... for your heads I'm waiting to see that you do in fact make the single intake, that there's enough interest for you to make it.
The heads do me no good without one, and believe me, I want your V top end on my V block instead of my 48's. Should be a killer street 433
I've waited this long, I can wait a little longer.

[ponjohn]

Lynn-

Do you have a source for cams lined up?

[tom s]

you can order a V roller cam from Comp today.Tom

[tom s]

im really not sure what everyone is expecting?Are you looking for 500 CFM heads?Im sure if you contact Jim he can give you a good number where they can end up.I think 400s will be no problem,my street port heads have been in the 380 plus range with 2.19 intakes and smallish bores.We have found the intakes are the choke,Vs like the 3 Cs like most engines.All my engines have been pump gas street engines.Being in the race section,15-1 with a dual quad tunnel ram and enough cam they will make big HP.Tom