Race-Prep is happy to announce that we have finally arrived here at CamaroZ28.com. We are proud to be a part of this ever growing web site and to start off our relationship with all of the members here, we would like to make it a little easier for you to have the power you want!! Starting today, Race-Prep will give a 20% discount for anyone or any group of people that purchase at least three complete packages. This includes any of our cylinder head and cam packages or our short block and complete engine packages. We are currently updating our website with new information so please give us a call @ 760-200-5155 if you don't see what you are looking for. We have high end packages for nearly any type of build you would like to do, here are some examples of customer engines.---emissions compliant 320rwhp/340rwtq LT1 heads and cam, daily driveable 391rwhp/450rwtq complete LT1 383, 470rwhp/412rwtq Phase 3 LS1/LS6 heads and cam, 511rwhp/478rwtq Phase 3 true LS1 head all bore 379ci. street/strip complete T-sleeved engine.---

Thank you for your future support on this web site and we hope to hear from you all soon!!

Bryan Wolter//Joe Mejia (Race-Prep Performance Engineering Inc.)
www.race-prep.com

 

That's a great deal! It's only a matter of time before people start realizing that Race-Prep heads are the only way to go. My heads/cam car made 450rwhp/410rwtq last year with Mac headers and a stock MAF and throttle body.

I'd post the flow numbers, but nobody would believe me.

 

I'm in the market for Stage II heads and maybe a Cam package (Since the price is right ) Please let us know ASAP when ur site is ready to roll with LT1 info. thanx

 

Thanks for the inquiry, we are ready willing and able to provide products and services to the public now, I apoligise for the delay in the website and believe me we are on our web designer to get it done ASAP! If it helps here are some numbers for the heads and cam packages:

Phase III AFR 215cc (After full hand porting from 220cc LT4 casting) runners fully assembled for hydraulic roller application, Comp springs, Comp Titanium retainers, 10 degree locks, Ferrea one piece stainless Intake and exhaust valves, ready to bolt on. Comp Cams Custom Hydraulic Race-Prep grind roller cam. These heads flow over 325cfm from a small 215cc runner and have excellent velocity, over 480FPS in the majority of the runner. This package can make 360+ RWHP on a stock bottom end with proper tuning and the right bolt-ons.

STD Pricing for this package is $4366.78, which if you meet the group rate of three or more complete packages, it will drop to
$3528.19 each.

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Phase II LT1 aluminum head and cam package (Customer supplied core) or AFR LT1 casting, both castings will provide over 280 cfm from a small high velocity runner, the AFR Castings allow for 290+ CFM ratings even in Phase II configuration and will be less than 190cc. These heads and a very small "SLEEPER" custom Race-Prep Grind Comp Cam, have belted out as much as 320 RWHP and 340 RWTQ through an A4 trans, much more with a manual. The price for these packages normally runs $3866.78 but with the group discount for three or more it drops to $3128.19 each. If you supply the core factory LT1 heads the price will drop to $2377.42 for the group rate.

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Here is all I have time to post but I hope it helps you all make any decisions you need to make. We should have the web page updated early next week with all the new info. Thank you for your interest in our company and we can take orders as soon as you all are ready!

Race-Prep Performance Engineering Inc. 760-200-5155
www.race-prep.com

 

Its great to have more engine buidlers sponsoring the site. I have a question though...

MicahJam and you guys are on opposite ends. He is saying 450rwhp on stock LT1 heads/cam, and you are saying 320rwhp on LT1 hds/small cam and 360rwhp on a set of AFR heads that flow 325cfm? I might be missing something here (usually my mind ), but that sounds a little lower than I'd expect.

Can you explain why his numbers and your advertised numbers are so far apart? Usually the shop advertises higher .

Ryan

 

No, my car is an LS1. My heads and cam combo was Race-Prep 6.0L heads and a 230/236 cam on a stock bottom end.

 

is that a misprint?

even with a mild cam, i would expect atleast 350+ rwhp from heads/cam. (even more if you went with AFRs)

 

The numbers for the LT1 heads and cam were for a "SLEEPER" cam, it literally had under 220*@.050" duration and a wider lobe sep than I would normally use to cover up the "Lope", it is nearly stock. In reality those numbers would be higher than that also if it would have been a stick, but it was an automatic 4 speed which uses about 20-40 more HP than a manual trans.

Thanks for looking though, I assure you in a Manual Z28 that "SLEEPER" would be in the solid 12 second range with minimal work. It went allmost 13 flat or an altitude corrected 12.88 in a 4100+ pound automatic Impala SS looking and sounding totally stock even before being tuned properly.

 

I should really learn to read before I open my mouth . I'm revoking my posting priviledges for this week...

Ryan

 

Thank you for the correction we appreciate it

 

As Race Prep is the "new kid on the block" here at Camaroz28, I would like to point out that my experiences with them have been light years better than any other engine builders/head porters I've yet run across....and I've gone through a LOT of shops. They built my 398LT4 from the ground up, and it is making blistering power and torque, yet with stock-like street manners. With an unforeseen dying Optispark contributing to a cold cylinder, I still made 408/464 to the ground. I'm expecting 440-450rwhp/500rwtq the next time out. This all through an A4, 4000stall TC, and full exhaust.

I simply couldn't recommend them highly enough. Since there isn't enough space here to list all the positives about their shop, feel free to e-mail me for more glowing compliments...

 

Just to add to this, the person RP is speaking of, is a good friend of mine. His car on the dyno was running as fat as the day is long due to some quick mail-order guesstimate tuning. He has since fixed his tuning issues, as well as added a necessary Walbro pump, and has picked up 3-4MPH ever since. This car drives EXACTLY as stock. He is completely California emissions compliant, full exhaust, stock cats, shorty headers. You absolutely wouldn't tell anything was up when the car is idling....only when you mash the throttle.

 

THUMBS UP FOR RACE PREP!!!! They built my 383 LT1 and couldn't be any happier. To date, I've put down 391RWHP and 446RWTQ on a DynoJet. I drive my Impala SS everyday, in traffic, to Las Vegas and NorCal ANYWHERE! I have managed to get OVER 18MPG on 91 pump gas with 3.73's, A4 and run at 180* with the stock cooling system.

These guys know their stuff and I wouldn't hesitate to recommend them. One trip to their shop and you'll be convinced... it's all business!!!

 

I purchased a completely forged 383 from Race-Prep. The motor is in the car but the acell DFI 7 hasn't been installed , so I haven't even heard it fire yet.

They were very patient (while I was asking a million questions), the heads flowed great! and If I can put down as much power as 4drLT4 (~470 rwhp, adjusted for 6sp vs auto on the Impala) I will be thrilled.

Thanks guys, I'll keep you updated.

Jim

 

Glad to hear it is going well with the install Jim, Thanks for the good word WE APPRECIATE YOUR BUSINESS!! Be sure to take care of plenty of built C5's for us ok?!!

--The Race-Prep Performance Engineering Team.