Ok Gordon try this

[aka Mylai Tran]

Ok Gordon try to guess this one, Ill dyno in the next 2 wks.

351 alum RDI block
Scat 408- 4?stroker w/22cc dish pist. & 0 balanced
AFRs 205 heads w/jesel shaft rockers
Compcam HR,232,240,.565/.574,112*
42# inj.
Prob spider victor jr. intake set up
75mm tb
80 mm ProM
Tristate headers
MSD dist. & the new alt by MSD

And if I switch to Quality Roadsters MAS-Flo system

And if I switch to Waynes COOL STACKS

[aka Mylai Tran]

The deck hight is 9.5" & 4" stroke
Cometic head gasket is .030
The dyno is a engine dyno type

[RRCOBRA]

Stacy, not to hijack the thread but which jesel shaft rockers (part #) did you use and did any machine work need to be done to the heads? Thanks.

[aka Mylai Tran]

427RRCOBRA I used the #KSS 516060,this was a very complete kit, It came with a push rod checker, chart, tools, & every part you could want or need. And was a true bolt in with no machine work

what block are you going to use?

[aka Mylai Tran]

427RRCOBRA I see you have a stack fuel injection-what kit did you get

[RRCOBRA]

Stacy I plan on using the Dart block with 4.125" bore, still undecided on stroke. I bought my stack setup from Wayne and I plan on using the Tec3 computer. What bore are you going to run in your block?

[aka Mylai Tran]

Lou the bore is 4.030 now if and when I rebuild it I will bore to 4.125 next time and lower the cr. to 9.5-10.0 w/more dish in the pists.

[Gordon Levy]

Stacy, I believe you will be around 480-520 hp. The big draw back is going to be the cam and injection. I won't comment about the injection systems you stated unless you call me.

[SGC48]

Stacy,

What is you static compression ratio? If you are in the 10:1 - 10.5:1 range I think Gordon is right on with his projections. Should be one heck of a stout motor. PLease keep us posted on the results. Thanks.

-SGC

[aka Mylai Tran]

Shawn my plan next friday is to dyno first with the PROBE setup, switch to the PRO-FLOW (Chris is shipping it next week) and then switch to a 750-850 Holley, I?m not going to dyno Wayne?s STACKS because I don?t think they can feed the motor to its full potentials, Ill keep posting what happens at the dyno shoot out.

[SGC48]

Stacy,

It will be intersting the results. Can't wait to see them. Thanks.

-SGC

[RRCOBRA]

I was told that Wayne's stacks flow 400 cfm per runner. Your heads won't flow that much. I don't know where you get the idea that the intake will be the bottle neck.

[aka Mylai Tran]

Lou its not just the air flow its the over all rpm & out of the box potentials (no fuss bolt on and go)I think Very Cool Parts stacks is very cool I just dont want to fuss with somthing all the time to keep it running at its best, if Wayne or somebody wants to ship me a demo unit set up to run on a 408 Ill be more than happy to not only pay for the unit to be shiped but ill pay waynes round trip air fair and room so he can tune it on the dyno,Ive talked to most of the large throttle bodies manufactuers and most think it wont keep up with a four barrel style set ups(speed dens.or mass air) on a victor jr intake

[RRCOBRA]

All I was trying to say is that it will flow more than enough air to make 650+ hp if the engine combo was right (heads and cam). I am sure that it will take a longer time to set up and tune, but there are others on this forum with similar engines (if not exact). You could start with one of their engine maps right off the bat, and build on that. I'm sure all they would ask is that you send them the new map you developed on the dyno. On the flip side, once it is set up right there should be no reason to tune it. I interpreted what you were saying is that it would limit your hp. I think what you were driving at that it is not a simple plug and play operation.

[RRCOBRA]

Side note. Every vendor/manufacturer will tell you their product is best for some reason or another. Most unrestricted engine classes run some form or individual runner intake system, as far as road racing is considered. If you are building a car for drag racing then please disregard my bias towrds road racing.

[aka Mylai Tran]

427RRCOBRA It will limit the overall hp! If you dont beleave me box it up & ship it,(I WILL PAY BOTH WAYS) when I talked to the other companies I told them I was going to go with the PROFLOW or Waynes stacks not any thing they sold, I told them I wanted a outsiders view,SO Did you get the "Side note" lets find out!! I would love to dyno both just to see. and you would get a system that is tuned for a motor verry close to yours.

Stacy

[RRCOBRA]

Stacy, Someone on this forum has a CHP 410 CI stroker with stacks that makes 580 hp. With 427 CI I should be able to make 600 hp (which is more than I need). All I was saying is that with your cam choice and head choice I didn't think the intake would hurt you that much. Gordon may be right about giving up a few peak HP but the improved throttle response and improved midrange in a car for track duty is more than enough for me to stick with the stacks (I also love the look). I only have the manifold right now (I am not buying the computer until I have the engine, and this is a 5 year project for me). I don'think all the guys know about this forum. I would have thought Wayne would have chimed in. Have you done any dyno tests yet?

[RRCOBRA]

Stacy, The car with the CHP 410 and stack injection is FFR-4000 screen name Don DePontee.

[Wayne Presley]

There has already been a third party test of the stack injection vs carb in back to back comparisons done with the same motor on the same dyno by Don Scott of Minnesota Classics/Classic Roadsters II. One was a vanilla 351W and the other was a 418W stroker with Victor Jr heads with a mild port job. The 418 went from 530HP/550 Tq (carbed with an air gap rpm manifold) to 556 HP/580 Tq with the stack injection. The 351W picked up 11HP and 17 Tq with the injection. Craig Hassler has a 347 with the stack injection on it making 617 HP, not a typo, 617HP with the 302 manifold with 45mm butterflies. THe 351W gas 50mm butterflies so I would say that the intake will not be the restriction in your engine combo. Your motor could go with more cam if you wanted to make more power. I'm running a cam with .600 lift and it idles very well with the injection. The last Cobra I sold had a solid roller cam in a 408 with .646/.670 lift that put 456HP/480Tq to the rear wheels at a dyno located at over 3000ft of elevation. It also made 400Tq@2100 rpm and would spin the tires at will going 55mph in second, 315 Yokohama AO32R's. Coast High Performance was so impressed with the system when my motor was built and run at their shop, they feature my motor in thier current ads in Kit Car and Kit Car Builder magazines.

[Wayne Presley]

Originally posted by Stacy tran:
Lou its not just the air flow its the over all rpm & out of the box potentials (no fuss bolt on and go)I think Very Cool Parts stacks is very cool I just dont want to fuss with somthing all the time to keep it running at its best, if Wayne or somebody wants to ship me a demo unit set up to run on a 408 Ill be more than happy to not only pay for the unit to be shiped but ill pay waynes round trip air fair and room so he can tune it on the dyno,Ive talked to most of the large throttle bodies manufactuers and most think it wont keep up with a four barrel style set ups(speed dens.or mass air) on a victor jr intake

Stacy, I'm unclear what you mean by having to fuss with it all the time, once it is tuned you don't play with it anymore. I would be happy to take you up on your offer to tune the engine on the dyno for you as I already have the map for my engine which is very similar (I have more cam but the rest is almost identical). You would have to purchase the system because if I let you "demo" it, I would then have a used manifold and TEC3R that could not be sold as new and hence worth less $.
BTW I'm guessing the HP to be around 510HP@5600rpm/540TQ@4600rpm. The shaft mounted rockers are not neccesary at the RPMs your motor will running. Cool but not needed.

[ January 24, 2005, 02:06 PM: Message edited by: Wayne Presley ]

[Wayne Presley]

Here is Ken Bush's motor run only to 5250RPM on a rear wheel dyno at JBA in San Diego. The engine is a 418 with 5 axis CNC ported Victor Jr heads, hydraulic roller cam and the stack injection. It will have about another 10-20 HP when it gets run to 6500 RPM after it is fully broken in. As you can see the stacks yeild a very flat and elevated torque curve.

[aka Mylai Tran]

Sorry I haven't had time to respond to the posts;
Wayne sorry if you took the side note thing personal it was not directed to you, I was just playn in the sand box with Lou. I know that I have overkill on the bottom & top end of the motor and have lots of room for more HP by changing the cam and heads, I picked all the parts for the type of driving I plan on doing! As for the rest of the posted stuff I will make it short and sweet, what I meant about the fuss is just that if I go from San Diego to the snakes to the lakes in Lake Tahoe I?m going to have to fuss with it to keep the same level of performance!

[aka Mylai Tran]

As far as Coast High Performance and JBA RACING well I just called both companies and talked to the techs. They both said the same thing-- hands downs yours is the best looking, but over all they would both buy the Mass-flow sys. From Quality Roadsters.
Wayne why not find someone(with your syst.) to either use there motor or mine to run both head to head it doesn?t have to be on a eng. Dyno, I?m off work for awhile and can travel to Cali., Arizona, or Utah, that way you wont have to lose money on a used unit and it has already been tuned to that eng. I well only bolt on the mass air out of the box (no tuning)
Cheers Stacy

[ February 02, 2005, 01:19 AM: Message edited by: Stacy tran ]

[Wayne Presley]

Originally posted by Stacy tran:
Sorry I haven't had time to respond to the posts;
Wayne sorry if you took the side note thing personal it was not directed to you, I was just playn in the sand box with Lou. I know that I have overkill on the bottom & top end of the motor and have lots of room for more HP by changing the cam and heads, I picked all the parts for the type of driving I plan on doing! As for the rest of the posted stuff I will make it short and sweet, what I meant about the fuss is just that if I go from San Diego to the snakes to the lakes in Lake Tahoe I?m going to have to fuss with it to keep the same level of performance!

The Redline system uses a baro sensor in addition to the MAP sensor to properly compensate for altitude changes. One customer of mine tuned at Texas World Speedway and then drove it to Pikes Peak with no problems.

[aka Mylai Tran]

Wayne thats great I did not know you had a syst. to do that,so I bolt your stacks on, pay 200-500 for a tune and I'm good to good --right?

[Wayne Presley]

Correct

[aka Mylai Tran]

Wayne you said I could use more cam.if I change out the cam & heads later to make more power will I have to go get your stacks tuned again for another 200-500 dollars?
because with the MASS-FLOW I would just change the cam and go.
and by the way thanks for helping me understand your stacks better, I can see I didnt quite understand it all

[Wayne Presley]

I think staying with a hydraulic cam you might need a slight fine tuning but not much. If you swapped out for a big solid roller, more than the likely the torque curve would be offset to a higher RPM and it would need a re tune.