Today, I took delivery of a very nice complete extrude honed Accel Super Ram intake system with the Lingenfelter Plenum thanks to Forum member Caboboy.

Eventually it will replace the much restricted factory TPI system and was wondering what gains or even losses for those who made this same change and what they saw?
I will do a minimum amount of 1/4 drag racing and to date have posted some high 12 second ET's at around 102.00 mph with 60 foot times in the low 1.70's.
With the factory intake system, it's all over after 4,500 RPM and just wanted to compare to what others have done?
Thanks,
Jim

 

Gotta think you'll gain at least 50hp and drop in the lower 12's. Extrude honing is nice stuff making gains on the high side (especially with your 383 and Edelbrock Performer heads).

Stock cam?

Nice buy!

 

Hey Jim, you'll be running low 10's in no time. See you next week at the races. Willie

 

Thanks Gregg for your reply,
This engine was built to be entirely California emissions compliant and this includes the Cam Crane # 270-104224
Not as big as I would like 270/276 452/465 but at least it is legal for use and a improvement over the factory grind.
With the Comp Cams 1.6 roller rockers, it has helped despite the high 2.73 gears.

 

Willie,
The only way that I will make it into the 10's is if I drive your car.
Considering the weight difference between you and myself, I could turn your car into a mid 11 second ride with very little effort...

 

Have had a Super Ram on my track car for 6 years. Not overly impressed.

 

I can only hope that my results will not be the same as yours.
Considering the original factory systems are so restrictive and the Super Ram is the only legal option for me because of California's strict emission laws, looks like I will be leaning on my friend and forum member Willie for tips.

One thing for certain will be the need for a complete re-tune of the of the chip after install to maximize the potential of the system yet keep it clean enough for the 2 year required emissions checking...
That in it's self should be a challenge.

Was also wondering and this applies to those of you fellow California residents with Super Ram's what your emission numbers looked like after your install? Better or worse???

 

SuperRam on a track car.

 

I think the Super Ram has a ton of potential depending on who much money you want to put into it. I was considering it for a max effort but wound up going with my garage built TPI Cross Ram once I figured out how to do it. With welding and porting I think one can easily see 340cfm of flow. The large plenum area is a plus.

 

I should mention that my modest friend Willie has been in the 10.20's with this C4 and it was done with a Super Ram.
Willie is my inspiration yet I am not planning on anything close to his ET's

 

You and I both Jim

Welcome to the fraternity, but the true initiation is to install it at least once!

 

Tim,
Thanks to you, this wouldn't have happened.

Odds are it will not be on until sometime this Summer, it depends on my engine builder Marc Power at MP Motorsports in Santa Rosa and his work load.
Plan on getting everything polished first....if nothing else, it will at least look good...

 

An extrude honed SR should be very stout.

Did I miss something though? Was this a second SR for the 421?

 

well said!

 

You will make considerable more HP and lose very little peak torque and actually increase the broadness of your torque curve.... even despite that mis-matched cam. As a note you can run a lot more cam than that and easily pass CA Emissions.

But, keep in mind, you are shifting your rpm band up approximately 700 rpm with the addition of the Superram.... thus in effect your motor has a whole new personality. Having said that, anytime you move up your rpm band 700 rpm, you must also adjust your converter and/or gear combination to take advantage of this, otherwise your set-up is not optimized and in my opinion, a mis-match. I predict, if nothing else is changed, you will only pick-up 1-2 tenths.... as I did, making the exact same change with a 350 many years ago.

I did the exact same thing you are doing many years ago...when I switched from Accell Long Tube Runners to an out of the box Superram, I only improved 1.5 tenths.... at the time, I hadn't realized that I should probably also loosen up my 2400 rpm 12" converter at the same time. 60's slowed down 5-6 hundredths.... I made up for it with the additional HP, but the improvement wasn't taking advantage of literally 40+ more HP. After loosening up the converter as I should have done in the first place.... my et improvements were 4-5 tenths and my 60's were even quicker with the Superram than the long tube runners.

Superram is an excellent street/strip intake. Your set-up, with a little more cam and the right converter is good for 11 second ets. Good Luck !

 

Thay's straight to the point Todd. Knowing what I do now, for Jim's purposes I'd recommend a set of 3.07s, an LPE 219 and maybe a 2800 converter since he drives in traffic more than he races. In my mind that would be a nice combo, run strong, and still have a docile idle in trafffic.

(I just love spending other peoples' money)

 

Beach Bum,
Thank you for sharing your experiences, it will certainly help and will give me a idea of what to expect.
At present, the stock converter was replaced with a slightly higher stall 2,200 when the transmission was rebuilt 2 years ago.
The 2.59 gears were a replacement after I broke the original 3.08's and is just a temporary arrangement. Eventually, I plan to upgrade to the stronger Dana 44.
The factory exhaust manifolds will be a hindrance so despite the addition of a Magnaflow cat back system, getting it into the 11's might be hard.

 

The cam you're using is very similar to the Comp Cam 212/218 cam I had in my 85 with the Super Ram and AFR heads. Mine passed smog with no issues. It also made some pretty decent power.

I'm going through the smog thing now. I'm hoping to get a wideband hooked up today so I can tune my 396 Super Ram for the specific RPM they test at. Hopefully my Crower 221/230 cam will get me through it. If it doesn't, I may be swapping cams just so I can drive in this state.

 

my 230 236 xfi 280 cam in my 383 ( smaller than yours) passed with flying colors, and my tune was not even spot on at the time, however my cats did a great job, they have since died a horrible death from the cam's overlap

my new cam is 220 /229 now even has an EO number, so your221 /230 is made a tad smaller by the additional cubes that you have, your cam is not too big to pass and you don't run cats all the time so your cats are still presumably fresh,

I am glad you are getting a wideband finally, you will wonder after you get it how you did without it for so long, it's not cheap, but it is an investment for sure

 

That 2200 rpm converter is a good fit for a TPI motor, but for a Superram motor, definitely too tight. Superrams do not require a lot of converter or gear to run good, but an upgrade over that 2200 rpm is definitely in-order..... your 60's will not be what you had hoped if not upgraded. I got my 60's with a 350 & Superram well into the 1.6's consistently and deep 1.5's with a 383.

Yeah, the factory exhaust manifolds are a problem.... I do not think any headers have a carb # due to the O2 sensor location.... such is life. (Maybe a shorty does ?)

As a note, I passed CA emissions sniffer test with a 383-SR-219 cam and Hooker 1 3/4" headers with flying colors. Just had to have the cat on and functional and it wasn't even close to failing.

Good Luck whittling your et down.... that is the fun part of the sport !