[gtorich]

Ok, heres what what i have in the car now.

66 Gto
455........bored out to 463
Crower 60919 cam........231/240
Srp pistons
66 tripower
about 9.3 compression
stock rods / pontiac crankshaft
3.42 rear
4 speed
80lb oil pump

Thought this would make a nice combo............never took it to the track, just doesn"t seem all that quick to me. Now the only comparsion i have to judge this by is on my old 90 corvette..........which there is no comparsion, the vette would smoke this thing easily.

Now, i know for sure the vette was stock, so something is not right here.


What im looking for here is something quite a bit better than what i have............

Thinking about the old faithful, roller from SD.........also some alum heads from Kauffmans,

Is this gonna be much of an improvment or not............im retired now and money is somewhat of an issue.

Thanks for any help.

Rich

[form74]

Originally Posted by gtorich

Ok, heres what what i have in the car now.

66 Gto
455........bored out to 463
Crower 60919 cam........231/240
Srp pistons
66 tripower
about 9.3 compression
stock rods / pontiac crankshaft
3.42 rear
4 speed
80lb oil pump

Thought this would make a nice combo............never took it to the track, just doesn"t seem all that quick to me.

I have pretty much the same combo with 6X-4's , ram air 2 1/2 inch manifolds, performer intake and T400 and a cliff rebuilt carb. My car takes off great from a stop accellerating hard till about 90, smoking the tires easily if needed. With me the car weighs around 4,100 pounds.

Does it seem slow off the line, midrange or top end

[ponchbro]

What heads are you running??

[67 Lamnas]

Originally Posted by gtorich

Ok, heres what what i have in the car now.

66 Gto
455........bored out to 463
Crower 60919 cam........231/240
Srp pistons
66 tripower
about 9.3 compression
stock rods / pontiac crankshaft
3.42 rear
4 speed
80lb oil pump

Thought this would make a nice combo............never took it to the track, just doesn"t seem all that quick to me. Now the only comparsion i have to judge this by is on my old 90 corvette..........which there is no comparsion, the vette would smoke this thing easily.

Now, i know for sure the vette was stock, so something is not right here.


What im looking for here is something quite a bit better than what i have............

Thinking about the old faithful, roller from SD.........also some alum heads from Kauffmans,

Is this gonna be much of an improvment or not............im retired now and money is somewhat of an issue.

Thanks for any help.

Rich

What have you done to optimize the combo you already have, like ignition and fuel curve??

[steve25]

Timing yes, but have you jetted those carbs richer since you went up in cubes some 18% from the 389 the tri power came off of, not to mention the bigger cam?

[grandville455]

Rich That should be a good combo already? something doesn't sound right? , but if I were u I would for sure get the roller! and heads if u can swing it! u seen what that combo does.. should take it to the track before tho to get some idea, but it is a 4 speed so that could be a problem there alone getting it to hook etc

[400 Lemans]

Sounds like it might be the cam timing. The 60919 takes 4 to 6 degrees advance just to come in on the installed centerline on the cam card. If installed dot to dot then its probably 112 to 114 centerline which is to retarded and kills the performance.

[PITTSBURGH 64]

Rich, that's a stout combo. Don't throw money at it, the key is in the tuning.. Keep playing with it.....

I believe Cliff set my 60919 at 109 in my 455.. It's got all kinds of power and I'm running a 2.56 posi.....

My set up likes 14 initial with 20 mechanical and 15 vacuum (manifold vaccum). I have an adjustable vacuum advance with the travel limited. I have the allen set at 5 turns from the lowest setting...
I use to use 89 octain with 10 initial but with the newer blended gas, my set up likes 14 initial on 93... My compression is 9.3 I have ported 6X8 heads....

I'm running a Cliffs quadrajet...

[gtorich]

Ok, lets see if can answer some of these questions.

The dist is a MSD Pro billet without the vacuum adv........12 intial ...24 on msd..36 total

Only info i could find on the cam..........107 int centerline.

The cam was advanced 2 degrees according to the paperwork

Heads are supposply 240..........cannot confirm this is accurate or not..........slight falling out with the builder.........really wouldnt believe him anyway.

On the tri power the jets are 74-65-74

Idle mix screws turned out 1 3/4.......new power spring from carbking for the cam.

As for the speed, seems a little slow out of the hole, mid range, not too bad......flyes from 65-110.

Reguarding Forms 74, and ive seen enough posts about this already...........i can fry the tires for a long ways, BUT only if i dump the clutch..........if going 10 mph, really nothing as far as tire spin is concerned.

Pitts 64...........seen a couple of your vids...........impressive to say the least.

Darby, i hear you on the other stuff..........only problem with that is Ma has developed quite a death grip on her wallet...........ive been retired now for 3 yrs......im saving the money the hard way, out of my pension LOL. I figure if i keep begging her enough, she"ll give in sooner or later.

Almost forgot on the fuel curve........still running the stock lines.

Thanks guys for the help so far

Rich

[gtorich]

Sorry about that

Heads are 6X8..............95 CC..............211/177

[DiamondJim]

Close or wide ratio 4 speed? You really need a little more compression with the 60919 but it will still work ok at higher rpm. My old combo in my 66 GTO: 463ci, SRP's, Scat rods, 4 speed(M22), 6X-4's, 4.10 rear. Ran 11.94/117. Easily smoke a 1990 vette although I ran into a ZO6 that beat me. My only suggestion is to optimize what you have and maybe more gear. Goodluck -Jim

[mudbird]

Something is up. I also think you be able to smoke the Vette even with the extra weight!

[triathlonx13]

What ever you do - Get a set of rods. Kauffman offers a relatively "cheap" rods that are way better then the stock rods.


http://www.krepower.com/Pontiac_crank_rods.htm

Pro Warrior line of rods in 4340 stock length H-beam connecting rods with bronze full floating bushings. These rods are the best for budget minded bracket racers. Looking for the most out of a set of rods for their dollar spent.
$ 399.00

[72blackbird]

form74,
You're choking your 455 w/ the RA manifolds and performer intake. I ran a similar combo to yours, except mine had ported no.64's, Torker II w/ 850 DP, Hooker Super Comps, and 3" duals- my '72 would run consistent low to mid 12's, and that was with a built TH-350 w/ 2500 stall and a 3.08 posi.

If and when I recreate that engine again I would definitely at least run 5140 or 4340 forged rods and use the 6x-4's or 6x-8's.

Geno

[form74]

Originally Posted by 72blackbird

form74,
You're choking your 455 w/ the RA manifolds and performer intake. I ran a similar combo to yours, except mine had ported no.64's, Torker II w/ 850 DP, Hooker Super Comps, and 3" duals- my '72 would run consistent low to mid 12's, and that was with a built TH-350 w/ 2500 stall and a 3.08 posi.

Geno

Geno,

I'm running the repro 2 1/2 inch manifolds (don't want headers) with a 2 1/2 mandrel bent x-pype system with dual mufflers, as for the performer intake it's going to be replace with a 72 intake I will have some work done as I'm running a Ramair air cleaner and can't use a taller intake. It should get into the 12's if the driver was better of the line.

[72blackbird]

form74,
I think the factory intake will definitely help- the performer starts choking any 455 around 4500-5000 rpm. I got around clearance issues by running a T/A hood w/ the shaker bolted to it (I ran a mini air cleaner that fit inside the shaker)- not factory or considered acceptable by some but it worked.

As for driver technique, I'm not much of a drag racer myself (why my times were 12.0x's- 12.5x's), but it was still alot of fun. That 455 was fast as hell, but w/ the 850 DP I was lucky to get 10-11 mpg. The next time around I'm going to run a Q-Jet.

Geno

[Cliff R]

If the cam was only moved ahead two degrees, it's more than likely not advanced far enough. All of the 60919 cams we've installed have required 4 to 6 degrees advance to get them to 109ICL. Typically they are close to 113ICL "dot to dot". This can hurt power considerably. The cam and other parts are adequate to make great power. I ran a near identical combination of parts, and it made 455.4hp on the dyno and pushed my car to 12.0's at 112mph. I was headed for the 11's with that combo when the KRE heads were installed. With no other changes we ended up running as quick as 11.64 at 116mph.

In my attempts to make the combination faster, the most significant improvments were to install 3" head pipes, and upgrade to a sumped fuel tank, electric pump behind the tank and 8AN lines/fittings everywhere......Cliff

[gtorich]

Originally Posted by Cliff R

If the cam was only moved ahead two degrees, it's more than likely not advanced far enough. All of the 60919 cams we've installed have required 4 to 6 degrees advance to get them to 109ICL. Typically they are close to 113ICL "dot to dot". This can hurt power considerably. The cam and other parts are adequate to make great power. I ran a near identical combination of parts, and it made 455.4hp on the dyno and pushed my car to 12.0's at 112mph. I was headed for the 11's with that combo when the KRE heads were installed. With no other changes we ended up running as quick as 11.64 at 116mph.

In my attempts to make the combination faster, the most significant improvments were to install 3" head pipes, and upgrade to a sumped fuel tank, electric pump behind the tank and 8AN lines/fittings everywhere......Cliff

Cliff & the others, thanks for the help............im at 107 ICL now, is this that far off from 109 ICL to make that much of a difference ?.

Diamond Jim..........the trans is a M-20 wide ratio.

So from what im reading here is i need to mess around with cam advancing and a few other things..............im on it, and well see how this helps.

Darby...........gonna try to make it out to the track and see what happens, been over 30 years since i did this, so im pretty sure the times will be bad LOL. But at least i"ll know where im at. Hopefully i don"t break anything.

Rich

[grandville455]

Rich U going to union grove then?...Atleast this way u will have some idea what its got and then we will be able to help you more too! by looking at times mph etc

[gtorich]

Darby.........will be going to WIR in Kaukauna, about 35 miles from me. Gonna try to make one of those slick vids that Pitts 64 does, might give you a better idea about what im talking about.

Maybe im just bad mouthing this thing too much...........really never any problems with this car except the small oil leak i have and can"t seem to find. It does run well, just seems it should be quicker. oh well.

Rich