Call Bob, he did my cam about 2 months ago. He will explain more info then you can digest and can tell you exactly what is need and why. Awesome guy and the cam guru

Bob Madara
marinekinetics@rochester
[email protected]
PH# 585.654.8583

Roller cam was'nt in my budget. I've changed the heads and intake t performer rpm air gap. Tinking o buying ths cam.http://www.summitracing.com/int/part...make/chevrolet Will i work with stock exhaust?

Read ths article: http://www.speedwake.com/photopost/data/500/454_3.jpg

the RPM and air gap have virtually the same performance numbers. if your manifolds were a few years old and run in salt replacing them wasn't a bad idea. otherwise you shoulda saved the money. that cam with a 110 lobe sep angle won't work with stock exhausts. the minimum you could run is the Gils that article was pushing. those vortec heads are ok at the rpm range you will be running. porting does little to improve them beyond a little bowl work, gasket matching the intake and ckeaning up some of the roughness on the ski jump in the intake ports. i would try that combo with the existing cams and see what you get. i think you will be happy with the results. i think you actually lost some HP using performer intakes on peanut heads. the ledge where the oval intake runner hits the round head runner causes a lot of turbulence in the airflow. don't know where you are. is this gonna be in water anytime soon or are you icebound like all of us northerners? let us know how it came out.

Had reversion w bob m- just saying had to extend inner pipes 6 inches bc water in oil-

Live in sweden and yes no boating untill june...

Will probably stay with the cam i have... Dont have the budget for headers, valvtrain etc.... Hope the heads and intake air gap (the old intake, performer was round runners) will help me go a Little bit faster.. 67,4mph gps at wot now.

Will update when i tried with new setup.

ii didn't know there was a performer peanut intake. you can re-sell those. flat or dished pistons? cuz you picked up a full point of compression over the 118 cc chamber heads that came off. they say that is good for about 4% increase alone. i am doing a little clean-up work in the ports and chambers of a set of L29's i picked up. if you do any work to those heads, do not go bigger valves. those chambers will have to be carved away till you are nearly back to the orig chamber volume for a 2.19 valve to breathe worth anything.

I believe you to be right almost, there is one for the the oval heads but not peanut's head's aside from...to much typing this early below have a read

http://www.summitracing.com/parts/WND-8122/?rtype=10

http://forum.grumpysperformance.com/...+intake#p44642

2161 is peanut port, edelbrock obscures this in their discription as "truck application"
i just sold mine last week

Do you have a gen 6 roller block? I would use the 454 HO cam .510/.540 lift and stock valve train works fine.... That cam is cheap and was rated at 415HP in a 502 I believe...... I also used the vortec heads and did put the larger valves in with limited success......... The dual plane intake is the right choice for you and I don't see much gain in power by spinning the motors more than 5,000rpm if that. The 496 style exhaust is much better than the log style so I would go with that as you can probably find a decent set pretty reasonable........ My wellcraft 2600 Martinique saw a speed increase of 4 mph from 47 to 51 after a complete rebuild of a L29 310HP motor..... I usually cruise at 30-35MPH so I would say the extra work done was a waste of time! It has great torque and really cruises effortlessly. I never cruise at full throttle as I have the Donzi for go fast duty! I decided to make the upgrades as I was rebuilding the whole motor and needed to get new heads anyway......... If I was to do it again I would get a set of the Dart iron eagles and go from there........ A heavy cruiser that needs torque will excel with Vortec heads. My Donzi has ported aluminum rect port heads and it's also a 509 and the power increase it has over the vortec heads is rediculous...... TBF

My buddy (sonic600) used Bullet cams. They performed exactly as ordered.
Mark been in the game for a long time great guy to deal with.
(662)893-5670.
Good luck on your build