Hi all, I could buy a new engine, but don't know if this parts/combo really fit me...need a strong motor for my 67 chevelle and should have daily driver quality.. Well here it is - thanks for your advise!! 383 cui heads are Pro Topline 215cc, with 2.02/1.60 in. valves Intake is a RPM dual-plane intake cam is a Delta Cam Dynamics 295, with 295° of duration, 240°-250° of duration @0.050 and 0.565 in. of lift Compression is about 9.8:1 what do you think? Fonti
I think it sounds right on! My only concern is if it is a true daily driver, it may be a bit thirsty. But, I'd rather pay for bad gas mileage in a 67 Chevelle than a Navigator anyday.
it's not a TRUE daily...but I just don't want to work on the engine every time before I can get going for a spin... so, it's not too agressive?
That cam won't have much bottom end - I had a comp magnum 292H cam in my 383 for a while and ended up with a comp XE 268 cam. Look up the spec differences on comps website. The smaller cam makes the car much faster with the better bottom end power. The 292 was fun once you got the revs going. It's all about the ******, stall, and the rear gears too. What's your whole plan?
I don't think it's something you would need to work on, but that is a lot of cam for a street motor. It's not even going to start to make any power until at least 3000+ rpm.
You need a medium hydraulic roller cam - PRM range 2000-5000, good aluminum heads, the right springs, 10.5:1 compression, 2500-3000 stall and some 3:73 - 4:10 rear gears - it'll run great and be maintenance free.
One thing you should maybe look into is those Pro Topline heads. If they are recent heads made by Comp Plus, you should be ok. The early ones cast in New Zealand were troublesome. I'm not sure how to tell the new from the old, but maybe get a machinist to look at them.
That's what I thought...don't need the power above 5000 rpm's! My plan is a reinforced th400, a 12 bolt rear axle with a 3.55 or so rear end... think I let it go, too much of a strip engine here. I also did google about the heads, not very troublefree units... thanks guys!
Well it's a big cam for a street car since the rpm range is not a stop light cam . That is just to much cam for the street . Very rough idle too . If you run a auto trans get a bigger stall . Good cam for a drag race for that mid to top end range . Also with the bigger duration you might have some trouble if you have power brakes . What are you wanting from your cam would be the first question . What gears are you running in the rear and what trans are you using ? What type of driving do you do with the car ? City , rural or country roads ? That is a very nice cam but too big for a daily driver . A 270 or 280 would still be strong but easier to drive . Those are some questions that come to mind first . Just my opinion . Retro Jim
If you let us know what you really want we can help . A good set up is a Edelbrock RPM kt with the everything from the short block up . You really don't need big heads and cam to get a strong running engine . Retro Jim
Thanks for your help! Well I don't "need" it it's just "wish"... Swiss gearhead! what do I like: - painless driving - have to drive to smaller city... - good low and mid range power (till 5000, eventually 5500 rpm's) - street legal (and here in Switzerland it's much harder to have a street legal car or hot rod!!) - 2-3 time a year on a "drag strip"... For a 71 Camaro I have a nearly new block I want to upgrade and "build" an engine myself with some help. Ordered the following parts for it: Holley 300-503-1 - Holley SysteMAX II and the Eagle Specialty Products B13004E030383cui rotating ***embly - hope that's gonna be a nice setup. It's gonna have a TH350 and a 3.55 rear end. Have a 2500 stall converter but don't know if thats the best... For the 67 Chevelle with a stock 350/350 in it I am looking for an exchange, either BB or SB. Could buy a 468 with Comp thumpr cam (11-601-4), 10.5:1 compression, H-10-73 & H-13-73, 336781 Heads - would go with a TH400 and also 3.55 rear end and a 2500 stall. what do you think? too agressive? thank you again for your help to buy the "right" engine! Peter
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