[leeklm]

If driving a lot on street, I would suggest keeping things similar to what you have, maybe some intake tweaks to play around with, etc.

I had the setup in my signature with OF 2.0, which I felt was a great street/strip combo and somewhat of a sleeper when running through mufflers, relatively light weight valve springs, etc. Made somewhere around 590hp at crank.

Since my street driving was getting to the point of 30 miles per summer, decided to open the heads around 325cfm and installed the attached cam.

Well, the sleeper effect is no longer lol. Car is noticeably louder, choppier idle, etc. Not radical by any means, but definitely not as pleasant on the street as it was. Of course the same cam with your larger cubes will not be impacted the same way- there are always trade offs with these things.

End result for my 461 is 635hp via the 1.75" headers and T2 manifold while knocking a couple 10ths off the ET.


Sent from my SM-G965U using Tapatalk

[Steve C.]

Larry's comments in post #17 reminds me.....

About 18 years ago Paul Spotts did one of the first 505 builds using a early IA2 block.

According to Paul, "This was not a 'build a gazillion horsepower' project. Rather it was an exercise to learn about the features and idiosyncrasies of the IA II block and building a street 505-cube engine that has vacuum for power brakes and uses a true street type cam. It didn't make huge horsepower numbers but did deliver on torque. It idles like a mild engine but can still put a well-prepped street car into the 10s."

The Edelbrock 87cc heads were 'cleaned up' to 306 cfm at 0.600" lift.

Valves- 2.110" intake / 1.660" exhaust

The compression was 10.2:1

It used a Comp solid roller cam with 254/254 at .050" / .3880" lobe lift w/ 1.65 rockers / 110 LSA

A port matched Victor intake with some mild port work and a AED HP 1000 carb

2-inch primary headers.

581.8 HP at 5700 rpm (corrected)
Best torque pull was 599.3 ft.lbs. at 4500 rpm (corrected)


.

[PunchT37]

Originally Posted by i82much

pretty sure I have clearance for a T2 and a 1 inch spacer, the RPM is on the car now. I didn't notice much difference between the two intakes, but we know how butt dyno's are ...

The road paver recommendation is intriguing because then I start to wonder about whether a beehive spring and light retainer might let me buzz it to 6000 RPM or so safely, I have the rev limiter set at 5500 now and it seems to fall off right about then anyway.

I have the Road Paver on 463 cubes. 330 eddy heads with a gasket ported T2 for SCE 128103 gaskets. 1 inch open wood spacer.



6000 to 6400 is no problem. Even though, 6400 is too high for that cam on my cubes. Even worse on your cubes. But, it does love to fly to 6000 without paying attention.

[i82much]

Originally Posted by PunchT37

I have the Road Paver on 463 cubes. 330 eddy heads with a gasket ported T2 for SCE 128103 gaskets. 1 inch open wood spacer.



6000 to 6400 is no problem. Even though, 6400 is too high for that cam on my cubes. Even worse on your cubes. But, it does love to fly to 6000 without paying attention.

what rocker ratio and valve springs? sounds perfect!

[PunchT37]

Running 1.5`s. 1.65`s puts it at 660 lift. This is a street car. Crane 99893 spring.

[Gach]

Whats spec’s on Road Paver cam

[Lee]

Derek Stewart apprenticed with Dave Bisschop, and I know he is doing intake work.

[PunchT37]

Why they call it Road Paver.

But, I can’t rotate these pics.

[PunchT37]

Originally Posted by Gach

Whats spec’s on Road Paver cam

306/314
246/252
400 lobe
112 sep107.5 ICL

[Pontiac Derek]

Originally Posted by Lee

Derek Stewart apprenticed with Dave Bisschop, and I know he is doing intake work.

Thank you Lee! Yes i am taking work now
503-808-0559 engineguy535@gmail.com

[Gach]

Originally Posted by PunchT37

306/314
246/252
400 lobe
112 sep107.5 ICL

Oh that’s a nice cam, for your combo.

[PunchT37]

Originally Posted by Gach

Oh that’s a nice cam, for your combo.

I might put it on 114 for 505 cubes.

[Pontiac Derek]

Originally Posted by i82much

65 GTO hardtop, 3.54 gears, 28" tire, ultra wide ratio muncie. Old Faithful 1.0 cam and 1.5 rockers, unported 87 cc edelbrock heads with old-style chambers. 850 double pumper, doug's headers. Street car.

Engine is 505 CID IA2. I own an unported RPM and unported Torker 2 intake.

Would it be worthwhile to send the heads and either intake out to get port work done? And if so, is this combo too mild to benefit from a Northwind? Should I go all the way to 340 cfm, 325 cfm, how far out should I go if I have the heads ported?

It would definitely benefit from the Northwind, but you can also do pretty well with a Ported torquer 2
We consistently made 635-665hp 650-672tq with the Road Paver cam 1.65 rockers 505-535, 10.3:1 fully ported T2 intake, SD standard entrance 340-350cfm E-heads
1000cfm carb

[Steve C.]

Dave Bisschop likes to use Comp lobes 3115B and 3116B.

He calls it the "road paver".

306 / 314
246 / 252
.4000" lobe lift
More often than not ground with a 112 LSA

Keep in mind if changing from a hydraulic roller cam to a solid roller cam you would add duration. Not a recommendation here, but something like a Comp 254 degree solid roller lobe would certainly not be overkill in a 505.
On the intake side I'm currently using Harold Brookshires tried and true 288 solid roller lobe. It has 255 at .050 and .4176' lobe lift. Peak power 5600-5800 depending on the pull.


.

[Gach]

Now is that Road Paver…. hyd roller or solid I might have miss that part

[PunchT37]

Originally Posted by Gach

Now is that hyd roller or solid I might have miss that part

Hyd. Old school Comp lifters.

[Gach]

Gotcha

[PunchT37]

Pretty mellow but stout street engine. The T2 is a choke point but, it IS a street car. It does rip, though.

[Gach]

Originally Posted by PunchT37

Pretty mellow but stout street engine. The T2 is a choke point but, it IS a street car. It does rip, though.

I’ll bet.. nice ! I had a 462 ci with solid roller 265 duration but it was a iron head that only flowed 265 cfm. Made 625 hp but is was 12.1 compression. So thats a nice combo on pump gas. amazing what head flow does.

[PunchT37]

Originally Posted by Gach

I’ll bet.. nice ! I had a 462 ci with solid roller 265 duration but it was a iron head that only flowed 265 cfm. Made 625 hp but is was 12.1 compression. So thats a nice combo on pump gas. amazing what head flow does.

Yep. 10.3 compress. Sweetheart. Prolly last forever.