[Va68goat]

1968 Pontiac GTO

- 462 cubic inch (A Gtofreek creation)
- Torker 2 intake
- Holley 870 Street Avenger
- Ram Air Restorations manifolds
- Flowmaster exhaust
- Turbo 400
- Torque converter by Cliff Ruggles
- 3.55 gears

https://www.youtube.com/watch?v=kHLshwwe-Tc
https://www.youtube.com/watch?v=trbmuNgY-tY
https://www.youtube.com/watch?v=53Agat3Ncnw

[cnc]

Originally Posted by Va68goat

1968 Pontiac GTO

- 462 cubic inch (A Gtofreek creation)
- Torker 2 intake
- Holley 870 Street Avenger
- Ram Air Restorations manifolds
- Flowmaster exhaust
- Turbo 400
- Torque converter by Cliff Ruggles
- 3.55 gears

https://www.youtube.com/watch?v=kHLshwwe-Tc
https://www.youtube.com/watch?v=trbmuNgY-tY
https://www.youtube.com/watch?v=53Agat3Ncnw

Sweet
Paul does awesome work....sounds great ...what stall converter what heads and flow......

[1968GTO421]

Originally Posted by cnc

Sweet
Paul does awesome work....sounds great ...what stall converter what heads and flow......

^X2..More details like above with cam type and specs. Thanx.

[OCMDGTO]

Sounds great and beautiful car!

[carcrazy]

Looks like fun!

[ta man]

Sounds great! Nothing like a good first test drive!

[Va68goat]

You're right marblik! Between Paul, HWYSTR455 and grivera, I know how lucky I am. A few other friends of mine referred me to local "Pontiac Guru's" here in Virginia. I'm glad I didn't listen to them. Paul was excellent to do business with and had patience with me since I'm really new to cars. HWYSTR455 and grivera have been to the house helping me and one thing for sure is they MAKE ME learn. As many times as I've been stuck, they tell me what the hell to do and I get it done (one way or another).

As for "Dialing it in".....HWYSTR455 and grivera, I'll buy the beer and food and I'll see you at the house. Hahaha!

[Va68goat]

Sorry I didn't put all the specs. I'm very new to this car game and still learning. So Mike, Will or Paul..Feel free to chime in. The converter is a 3000 to 3200 stall. I do have KRE heads (D-port) and believe the flow is 260-270...?

[grivera]

Originally Posted by Va68goat

Sorry I didn't put all the specs. I'm very new to this car game and still learning. So Mike, Will or Paul..Feel free to chime in. The converter is a 3000 to 3200 stall. I do have KRE heads (D-port) and believe the flow is 260-270...?

I know it's one of Cliff's 9.5" converters from the new vendor he is using - maybe 3K stall?

Here is Paul Carter's thread on the dyno session:

http://forums.maxperformanceinc.com/...d.php?t=809537

"Well, I finished up a 455 and got it dynoed yesterday. Here are the engine specs.

455 + .030 = 462 CID. Stock 455 crank.
KRE D-port heads, exhaust opened to 1.77" valve. Bowl blend to blend valve job, and a port match to stock Fel-Pro intake gasket[not the 1233 or RAIV size]. No other porting done. Heads flowed around 265/190 CFM, IIRC. I'll have to dig up the flow sheet on them.
Lunati Voodoo HR cam, 243°/251° @ .050", ground on a 112° LSA, installed on a 105° ICL. Hylift/Johnson hydraulic roller lifters[slow bleed]
Torker II intake, unported.
10.5:1 compression.
RA exhaust manifolds with 2.5" pipe attached.
Jeff Koerner Holley carb

Sorry, I can't get my scanner to work, so I can't scan the dyno sheet. I'll try to fix it so I can, but here's the numbers.

_RPM______torque_____HP
1600______447_______137
1700______424_______137
1800______410_______141
1900______414_______150
2000______423_______161
2100______431_______174
2200___________________
2300______443_______191
2400______455_______208
2500______470_______228
2600___________________
2700______485_______250
2800___________________
2900______497_______270
3000______506_______289
3100______505_______298
3200______505_______308
3300______512_______322
3400______519_______336
3500______526_______351
3600______533_______365
3700______537_______378
3800______537_______389
3900______541_______402
4000______542_______413
4100______545_______425
4200______546_______436
4300______549_______450
4400______553_______463
4500______553_______474
4600______552_______483
4700______553_______495
4800______552_______505
4900______550_______513
5000______547_______519
5100______542_______527
5200______536_______531
5300______531_______536
5400______525_______540
5500______518_______543
5600______511_______545
5700______502_______545
5800______490_______541
5900______486_______546
6000______471_______538
6100______458_______532
6200______427_______505

While watching the real time computer screen as it revved up, I actually saw a 551 HP number in there somewhere, but it must have been in between two data points because it doesn't show it here. Overall, not bad for unported heads, and iron exhaust manifolds."

[TCSGTO]

Sweet running car! You’re gonna need tires,lots of them.

[ta man]

Originally Posted by TCSGTO

Sweet running car! You’re gonna need tires,lots of them.

LOL tires lots of tires..been there!

[dragracerx2813]

Sweet ride !

[hal101]

Paul does awesome work yes he dose

[gtofreek]

If you notice in the engine build spec sheet, this cam was ground on a 112° LSA, and installed 7° advanced, on a 105° ICL. It made over 500 ft. lbs. from 3000-5700 RPM, and made over 500 HP from 4800-6200 RPM. These were un-ported KRE D-port heads with RA manifolds, and 2.5" pipe. Port matched to a standard blue Fel-Pro intake gasket. I put that the heads flowed 265/190, but when I looked back at the flow sheets, they actually flowed 262/190. Not too bad for a big engine with small head ports, and exhaust manifolds. This dyno sheet was with one of Jeff Koerners Holley carbs. With the carb that is on it now, and in those videos, it made about 30 HP less, or 517, IIRC.

[Half-Inch Stud]

For clarity: is the final intake lobe 105* or 98* ILC?

[gtofreek]

Installed at 105° ICL.

[TCSGTO]

What size/type of Holley was it dynoed with?

[Va68goat]

Well, as you can see by the picture, the mysterious knocking noise has been revealed ..HWYSTR455 came over today and was able to identify the problem. Here is the vide clip where you can hear the knocking.

https://www.youtube.com/watch?v=kHLshwwe-Tc

Here is what I'll be replacing the old rockers with.

https://www.summitracing.com/parts/c...SABEgJ8ofD_BwE

Two rockers were damaged on the passenger side, didn't even check the drivers side because they all need to be replaced anyway! Minor setback but hopefully I will be on the road soon. I just wish I knew how to do this stuff myself!!!

[gtofreek]

It was a Holley that Jeff custom built for a customers 428 Ford. I believe it was a 950 HP, but it could have been a 750 HP. By the time he gets done with them though, it probably flowed upwards of 980 CFM. It was not an off the shelf carb. Jeff buys specific float bowls, metering blocks, main bodies, throttle plates, floats, etc., for the intended use of the carb. Then he modifies them for what is needed. His carbs run like fuel injection, but much more responsive. We dynoed a race engine with a customers carb. The engine had good A/F ratios throughout the rpm range. It made 600 HP even. Jeff felt the carb was a little too big, so he built one that had a bit smaller venturis, and did his custom metering block mods, and that same engine made 699 HP without any other change. That was about the biggest gain we've seen from a simple carb change, except in one of our NASCAR SW tour engines that also gained 100 HP from a carb swap, but that was from going from a carb that flowed about 540 CFM[390 Holley] to a 950 HP that he had flowing 1049 CFM. That was a 353 CID, 9:1 compression SB Chevy engine. It went from 575 to 675 HP.

[Formulajones]

These guys probably don't know Jeff's history with holley carbs. Phenomenal what he does.