time for the 383 build.
Thread Starter
Staging Lane
Joined: Oct 2007
Posts: 99
Likes: 0
time for the 383 build. So after i put my newly modified LT1 intake i relized that my engine was not liking the higher rpms so it decided to start burnin quite a lot of oil at rpms over 4k... so its time for an upgrade which will be a 383.
My current setup is a stock 350 4bolt main flat tops 64cc heads that came off a fedex truck and have been ported like crazy, a mild cam lift of ~488+1.6RR and duration of 212/218, 52mm TB, ported LT1 intake, Mass air flow, 24# injectors @ 44psi, shorty headers 3" borla catback, 3200 stall, 700r4 and 3.73s <- that went 13.4 @ 100 w/ a 1.78 60ft in my 89 trans am
My goal is to go low 12s or even high 11s with a 383 and still fuel injection, i know everything will have to get upgraded at some point but for right now my main concern is the bottom end. I will be boring .030 over and gettin everythin ready for the 383 my question are as follows:
1)what compression should i be looking at to keep it streetable since it is my daily driver??
2) where can i get a decent 383 rotating assembly that has been balanced and will not put a huge hole in my pocket??
3) what size cam will be streetable but still get me high 11s on the 383??
4) will 30# injectors be enough??
5) and will the MAF handle the power?? sd is not an option, i'm not too good with wiring
I plan on gettin some 64cc aluminum heads w/ maybe 180-190cc but thats not until like next summer, so for now the iron heads would have to suffice.
Thanks in advance and please let me know what you guys suggest.
My current setup is a stock 350 4bolt main flat tops 64cc heads that came off a fedex truck and have been ported like crazy, a mild cam lift of ~488+1.6RR and duration of 212/218, 52mm TB, ported LT1 intake, Mass air flow, 24# injectors @ 44psi, shorty headers 3" borla catback, 3200 stall, 700r4 and 3.73s <- that went 13.4 @ 100 w/ a 1.78 60ft in my 89 trans am
My goal is to go low 12s or even high 11s with a 383 and still fuel injection, i know everything will have to get upgraded at some point but for right now my main concern is the bottom end. I will be boring .030 over and gettin everythin ready for the 383 my question are as follows:
1)what compression should i be looking at to keep it streetable since it is my daily driver??
2) where can i get a decent 383 rotating assembly that has been balanced and will not put a huge hole in my pocket??
3) what size cam will be streetable but still get me high 11s on the 383??
4) will 30# injectors be enough??
5) and will the MAF handle the power?? sd is not an option, i'm not too good with wiring
I plan on gettin some 64cc aluminum heads w/ maybe 180-190cc but thats not until like next summer, so for now the iron heads would have to suffice.
Thanks in advance and please let me know what you guys suggest.
Staging Lane
Joined: Jul 2008
Posts: 54
Likes: 0
you need to find a shop to do the machining and get prices from them on a rotating assembly. then knowing what they will charge you, will be able to compare parts price throu them and summit, jegs, sdp and some of the site sponsers. if you get internally balanced, i believe you need to get the flywheel 0 out. hit up sites like carcraft, and some of the chevy mag sites and look in there tech sections. they have done some 383's and you can look at there combos and outcome. also carcraft did a article in there mag on everything you ever wanted to know about the 383 about a month or 2 ago. that might be on there site?
