[Gach]

PS the E-heads have LS heart shape chamber.

[Skip Fix]

Stan when I built my 455 with RAIV heads 1988 -hard to find before any Eheads etc were available UD 288/296 HFT on a 108 HO intake 73 SD Q jet it made about 420 HP on my machinists old conservative dyno. He built a guy a similar 455 but used some ported 6X heads and it was off the RAIV motor by about 50 HP also.

[ponchonlefty]

Originally Posted by Skip Fix

Stan when I built my 455 with RAIV heads 1988 -hard to find before any Eheads etc were available UD 288/296 HFT on a 108 HO intake 73 SD Q jet it made about 420 HP on my machinists old conservative dyno. He built a guy a similar 455 but used some ported 6X heads and it was off the RAIV motor by about 50 HP also.

what did the ra4 heads flow? just curious , were they ported or stock?i mean on your combo. was you using stock intake? in 1988 that was pretty stout.

[ponchonlefty]

Originally Posted by Gach

It’s a build for friend, I talked him out of going with LS motor he wanted to make 500 hp. Here’s some information

His heads 114 cc chamber heads.. compression was 8.2 if I calculated it correctly. With E-Heads it’s now closer to 11.1. #96 heads. Didn’t know they made them with 114 cc chamber, I checked them with Borat (sp)

So your talking close to .3 more compression I’m guessing those iron heads flow 190 cfm and E-heads are say 260-270. So 60-70 more cfm. So it actually made 73 more hp he posted number wrong.

That was with his Lunati 1051072 cam. Don’t laugh And 3 tube headers
The latest change went with Comp cam BP6014SP and 4 tube headers 1-7-8”
Cam pick up 16 hp, and 1# torque. Headers pick up whopping 25 hp for total of 491 hp. The intake is a Edelbrock dual plane with the divider cut down, and it’s a Holley 850. With 1” spacer that fits under the hood.

After messing with timing and jetting it it end up making 502 hp at 4900 rpms

I’m blown away, says you can easily make 500 hp with nice stock block and bolt on out box heads. He’s super happy. My cam choice would’ve been Crower 60919 cam

was that a ede rpm or performer intake?

[Gach]

Originally Posted by ponchonlefty

was that a ede rpm or performer intake?

Performer rpm I think that’s what it called.

[25stevem]

If they where stock RA4 heads then the peak intake flow was 225 @ 28”.

Note that a stock Edelbrock performer will not make more then 420 hp.
On a 406 cid motor with stock high comp D port heads and the RA4 cam and 1.5 rockers peak hp will be no more then 5600 .

Bolt one on to a 455 set up the same way and your peak hp is now 4900 rpm.

[Gach]

Originally Posted by 25stevem

If they where stock RA4 heads then the peak intake flow was 225 @ 28”.

Note that a stock Edelbrock performer will not make more then 420 hp.
On a 406 cid motor with stock high comp D port heads and the RA4 cam and 1.5 rockers peak hp will be no more then 5600 .

Bolt one on to a 455 set up the same way and your peak hp is now 4900 rpm.

Yep..That’s exactly were it made peak hp 4900.

[slowbird]

Dyno sheet or pic or video?

[25stevem]

Are you requesting that from myself or Gash?

[Half-Inch Stud]

Gach, That 502 HP @ 4900 is fantastic. Great combo! What Octane for ping-free Street use?

[Jay S]

Originally Posted by Gach

It’s a build for friend, I talked him out of going with LS motor he wanted to make 500 hp. Here’s some information

His heads 114 cc chamber heads.. compression was 8.2 if I calculated it correctly. With E-Heads it’s now closer to 11.1. #96 heads. Didn’t know they made them with 114 cc chamber, I checked them with Borat (sp)

So your talking close to .3 more compression I’m guessing those iron heads flow 190 cfm and E-heads are say 260-270. So 60-70 more cfm. So it actually made 73 more hp he posted number wrong.

That was with his Lunati 1051072 cam. Don’t laugh And 3 tube headers
The latest change went with Comp cam BP6014SP and 4 tube headers 1-7-8”
Cam pick up 16 hp, and 1# torque. Headers pick up whopping 25 hp for total of 491 hp. The intake is a Edelbrock dual plane with the divider cut down, and it’s a Holley 850. With 1” spacer that fits under the hood.

After messing with timing and jetting it it end up making 502 hp at 4900 rpms

I’m blown away, says you can easily make 500 hp with nice stock block and bolt on out box heads. He’s super happy. My cam choice would’ve been Crower 60919 cam

I am guessing the Lunati cam was a miss print 072 on the end of the part number was 702.

I recognize those numbers. It sure looks like the engine Built by Nick’s garage and dyno’d on their youtube channel. 66 heads should have been the big chamber 114 cc heads in 71, not 96. I have never heard of that big of chamber on 96s, that is pretty bizarre. Nick said the compression was mid 9s back when the dyno episode posted. He missed pretty badly on that if that is correct and I am correct on this engine’s past.

Nice job Gach!

[Stan Weiss]

Originally Posted by 25stevem

The Cam.

Steve,
Me too.

Stan

[Stan Weiss]

Originally Posted by Skip Fix

Stan when I built my 455 with RAIV heads 1988 -hard to find before any Eheads etc were available UD 288/296 HFT on a 108 HO intake 73 SD Q jet it made about 420 HP on my machinists old conservative dyno. He built a guy a similar 455 but used some ported 6X heads and it was off the RAIV motor by about 50 HP also.

Skip and everyone else thanks.

Stan

[Stan Weiss]

Originally Posted by Jay S

I am guessing the Lunati cam was a miss print 072 on the end of the part number was 702.

I recognize those numbers. It sure looks like the engine Built by Nick’s garage and dyno’d on their youtube channel. 66 heads should have been the big chamber 114 cc heads in 71, not 96. I have never heard of that big of chamber on 96s, that is pretty bizarre. Nick said the compression was mid 9s back when the dyno episode posted. He missed pretty badly on that if that is correct and I am correct on this engine’s past.

Nice job Gach!

Jay,
wouldn't a 702 installed @ 110 ICL with 11:1 CR crank over 200 psi?

Stan

[Stan Weiss]

Originally Posted by Jay S

I am guessing the Lunati cam was a miss print 072 on the end of the part number was 702.

I recognize those numbers. It sure looks like the engine Built by Nick’s garage and dyno’d on their youtube channel. 66 heads should have been the big chamber 114 cc heads in 71, not 96. I have never heard of that big of chamber on 96s, that is pretty bizarre. Nick said the compression was mid 9s back when the dyno episode posted. He missed pretty badly on that if that is correct and I am correct on this engine’s past.

Nice job Gach!

Jay,
If you and I are looking at the same engine Nick did. I believe he got 395.7 peak HP.

Stan

[Stan Weiss]

Originally Posted by Gach

Yep..That’s exactly were it made peak hp 4900.

Gach,
So it made peak HP of 450 @ 4900? At what RPM was the 515 peak torque?

Stan

[Jay S]

It could just be coincidences, if it is they are for sure weird coincidences. I remember for the 455 Nick tested had 96 heads, but had RA manifolds and not 3 tubes. The cam swap went from the 702 Lunati to the 6014 Butler, which is the same, and the power was 370 something with the 702 and the Bulter cam was what Dyno results that you posted Stan.


Without looking at the numbers that close I think both cams would pump 200 ish at 11:1. Bulter cam might be 10 lbs less at most. The Bulter cam is more or less a XE274 widened out to a 112 LSA. The way it is ground with it’s very fast opening on the intake it doesn’t scavenge all that well on 112, between that and the later intake closing widening LCA out (creating the later intake closing) it can run a good amount of compression, 11 is pushing it though. I agree with Gach, I think the 60919 would have done better, especially with bigger ratio rockers. I am not really a fan of Bulter’s 6014 cam.

[ponchonlefty]

Originally Posted by Jay S

It could just be coincidences, if it is they are for sure weird coincidences. I remember for the 455 Nick tested had 96 heads, but had RA manifolds and not 3 tubes. The cam swap went from the 702 Lunati to the 6014 Butler, which is the same, and the power was 370 something with the 702 and the Bulter cam was what Dyno results that you posted Stan.


Without looking at the numbers that close I think both cams would pump 200 ish at 11:1. Bulter cam might be 10 lbs less at most. The Bulter cam is more or less a XE274 widened out to a 112 LSA. The way it is ground with it’s very fast opening on the intake it doesn’t scavenge all that well on 112, between that and the later intake closing widening LCA out (creating the later intake closing) it can run a good amount of compression, 11 is pushing it though. I agree with Gach, I think the 60919 would have done better, especially with bigger ratio rockers. I am not really a fan of Bulter’s 6014 cam.

the 60919 is that a copy of the 041?what would your opinion be using the 60311?

[Jay S]

Originally Posted by ponchonlefty

the 60919 is that a copy of the 041?what would your opinion be using the 60311?

Butlers cam made good numbers, to me there would be no question the 60311 would make bigger HP numbers, probably at the expense of low end tq though.

What Crower sells right now as the 60919 is not a copy of a 041, it has less seat timing and the LSA is narrower. At least it isn’t the same anymore, it may have been the same many years ago.

[Gach]

No.. heads are definitely 96, Clearly a 9-6 on center exhaust port, I used them before and think they were 96 cc chamber, I was told 114 cc that’s why I thought it was bizarre and reason why I checked them, come to find out he had chamber reworked in fear of having donation. Who ever did chamber work did a good job.

LOL we didn’t do a photo shoot. It was obvious to me, when I talked him into going with new Edelbrocks with LS heart shape chamber, that picking up 2-3 points compression and 60-70 more cfm head flow that it would definitely make more then 377 hp it’s a no Brainer.

Ok speaking of 60919, and reason I prefer it over comp cam, there’s another build I was involved with. And this is all documented, cleary a video of him running 11.60’s at Norwalk. It’s 67 GTO that weighs 3600 lbs. it’s a 400 block 040 over. with crank I sold him, cast 455 crank done by crankshaft specialist, anyway works out to 461 ci. Out box Edelbrock heads, not heart chamber ones. Performer rpm intake and a Q’jet done by Cliff R. It has switch pitch convertor has a switch he flips. Believe it works out to 3500-3800 stall. All on pump gas. Cams in at 108, if you account for timing chain stretch it ends up 110. One other thing their round port e-heads

Fact he has a block of wood under gas pedal to keep it from going faster then 11.60’s has no roll bar in the car. It doesn’t want to put one in. So figured it out 3600 lb car 11.60’s how much hp.