Had a discussion recently with some chevy engine builders. The topic was intake manifolds for a street machine. The engine is a 383 stroker. Isky cam, calculated .554 and .565 / 225 and 234, 750 Demon DP, 9.5 to 1 comp. 700R4 and 3.73. Want a good torque motor. Which manifold would you suggest? Thanks

Performer RPM.

funny you mention that, I believe that was one of their recommendations. thanks

Hard to beat the Performer RPM. Air-Gap is a plus also.

gm alumn highrise z28 style intake

I sometimes jump the gun and pose a question before doing a search, I guess I'm an excitable boy . It appears this was asked (or somewhat similar question) in a thread on Jan 21. Texas Performance Products stated they sold a Professional Products manifold that performed as well or better than the Edelbrock. Anyone have experience with that manifold? It appears to be almost unanimous that the Performer RPM or Air-gap are the ones. Any other thoughts? Everyone agree? thanks

I am confused, the motor has a vic jr. single plane on it now and have been advised that a hi rise dual plane would provide the "pants in the seat" feel that is desired. You know, that torque- real launch feel of a BB. The car is mainly a street performer but would also like decent 1/4 times. Everyone said "oh 383 stroker that's a good torquer", but I don't get it. It doesn't "feel" like it. The motor has good HP. I'm open to suggestions.

I am confused, the motor has a vic jr. single plane on it now and have been advised that a hi rise dual plane would provide the "pants in the seat" feel that is desired. You know, that torque- real launch feel of a BB. The car is mainly a street performer but would also like decent 1/4 times. Everyone said "oh 383 stroker that's a good torquer", but I don't get it. It doesn't "feel" like it. The motor has good HP. I'm open to suggestions.


What stall are you running? Your cam is big enough that with the low 9.5:1 compression, you will need a stall to get into your torque range. What heads are you running? The Vic. Jr. is overkill and killing your bottom end torque. The Professional Products dual plane is a good one. I think it's called a Crosswind. I run a Hurricane single plane and it works well. The whole combo has to work together to make torque and hp. List all the specs and let's see what you got going on.

the stall is 2400 Bowtie Overdrive, it is the third converter I've had. The first was a local guy's that was around 2400-2600 which blew. The second was a Precision Industries Vigilante with a stall of 2600-2800 but it seemed to sap HP. All are lock-ups. Victor Jr heads. Super comp Hooker headers 1 3/4.

hmmm.... my 383 is very close to yours... flat tappet .5" lift, near same @.050 #'s, dart heads, 600 cfm edelbrock and perf rpm. Mine is a torque monster, Dave. It will poull the overdrive down near idle withoujt so much as a shudder... 1/4 throttle at any rpm in first will melt the tires off it, half throttle at any rpm in second will do the same. I am talking any, too... 1500---2000---2500 what ever, poke it and she burns.

Something is killing your bottom end, very possibly that vic jr.

Jim, thats what I'm talking about! That's what I want.

Consider a Weiand Stealth or a Holley 300-36..

pdq67

IMO, you are too mild for the intake and heads. I don't have near the intake or heads on my daily driver and it will melt the tires off @60mph with a 2.73 gear. I'm in the process of changing it now to a 3.55. My combo is 383 with performer rpm top end kit (heads, air gap intake, and cam)

I bet you have some top-end hp.

what heads you got on there, Dave? and are you certain you're at 9.5:1?
Where exactly does the intake close with that cam?
I'm at 9.7:1, intake close at 61 degrees, dcr 7.97:1

What about your tune? I bumped my initial from 12 to 18 today, really woke er up. Also leaned the idle and put leaner metering rods in the lil edlebrack, she liked that, too.

He says he has Vic. Jr. heads and intake. Those 215cc runners topped by the single plane is killing bottem-end IMO. (and experience, been there, done that)

i have a 383 with 475 hp with a performer rpm airgap

let me know hw much you want for the Vic JR intake

I appreciate all the info, lowcamaro if i change intakes (and it looks like i will) I'll pm you. I am looking for the performance that Jim mentioned and it seems that Per RPM, air-gap, Weiand and the Holley are good choices.

seems like it would be easier (and cheaper) to bring the cam,and stall,up to what the heads and intake want.
something in the 245 @ .050 and 3000-3500 range.
it would sure save on tires! :)

i had my 383 on engine dyno and got the best numbers with an offenhauser 360 manifold.
guess which manifold is on my 383 now lol.

thanks for the recommendations. I'm going to talk with my builder and discuss all my options.

I have a ZZ383 with Edelbrock RPM/AirGap manifold. Using a B&M 2400 Holeshot torque converter. I like how the car runs with this combination .

I have a 406 (not really that much bigger than a 383) and the VicJr. on 200cc heads with 3.73's and 10" 3000 stall. I have the same problem as Jim with the tires and they're American Racers (McCreary's). I wouldn't say its the intake completely.