DM91RS

I know that several members are running this intake and would like to know how it's working.

I think that this is the one? 300-49

DM91RS

Another question comes to mind.......does this manifold have an exh. crossover? And.....how does it run when the engine is cold and not up to temp yet?

Thanks for any replys!

TP355Z

at present i'm running that TBI intake on my 355 TBI motor in my 1988 SC - its great as far as i'm concerned. With the stock ignition, timing set at zero, and custom (translate = homemade) TBI spacer, the motor runs up to 5,000 rpm w/o ANY trouble (i dont wanna push it further yet). I'd say go for it. the only problems i encountered were with the brackets and such, since NOTHING fits right with aftermarket parts - but fuctionally, its great.

TP

DM91RS

Glad to hear that it's working well for you.

Thanks

Snowdog 91 Formula

I have no problems at all... It's a great intake manifold!

DM91RS

That's two yes votes.........I assume that it runs well when its cold outside. The Vortec that I have now does not! Once the outside temp comes up it runs much better.

Does the 300-49 have the exhaust crossover in it?

Thanks

TP355Z

yep - its got heat-cross overs. A word to the wise though - I couldn't run my 1988 EGR off my 305 b/c the mounting wasn't the same. I ended up getting lucky with a 1985 305 EGR unit - thats the only hitch. As far as cool weather - the car runs good. In fact, even with my 14X3 open element, the car starts right up and warms itself w/o any trouble.

TP

DM91RS

Thanks TP

I have seen Astro's pic's of the egr prob. But as you said it can be worked with. Right now I don't have egr and don't have any problems that I know of but I will probably add it back with this intake and I'm sure in a year or two the air ****'s will be in my county and I should consider that I all my future mod's.

As far as the height of this intake how does it compare with the stocker.

Darrell

TP355Z

height wise...i'm not sure. I had to run a 1in spacer (or thicker?) under the TBI to get it up to clear some brackets i think...I forget why i put it on now exactly...but the heights are similar. The holley is the taller of the 2 tho.

TP

Snowdog 91 Formula

The reason for the spacer is easy. You need the spacer so you can fit your EGR valve.
It wouldn't fit with my Holley 502-6 TBI unit.
I'd recommend at least 5/8" minimum.
And yes I found an EGR valve that fit too. It's in my sig.

DM91RS

Thanks guys!!! You've been very helpful

pimpintheRS

i've been planning on getting the edelbrock because its the only tbi manifold i see..i have recently moved to phoenix(air ****'s) so i have to keep it legal... if this holley has egr and everything might have to consider it...

how do you guys think the holley compares to the edelbrock? i am building up a 350 maybe late this summer so any help is appreciated...

V8Astro Captain

iTrader: (1)

I'd say it's a little too big unless you're gonna change the cam. I noticed that with my stock L05 cam. It's just about right with my new cam, still a little on the big side.

If you want to run the EGR, you'll have to get a valve from a late 70's (78 I think ??) truck.

I passed the Missouri IM240 dyno test with NO EGR valve.

TP355Z

The Holley is a good idea for a 350 in my opinion - nearly a must. However, if you're only running a 305 with perhaps the Ultimate TBI mods, it *just might* be overkill with the 2inch bores. I went with a 670 holley unit and the car pulls HARD up to 5,000 with the stock ignition - so the holley will DEFINITELY run. Also - i didn't run much of a cam either (212/218) (.440/.454) so i wouldn't worry about that.

TP

TP355Z

This too - the holley can be adapted for 1 11/16 bores (holley makes an adaptor i think) but the Edlebrock kinda leaves you s.o.l if you want bigger bores.

bigREd car

okay i am going to find a cheap lo5 put a lt1 cam in it.. stick with the lo5 heads until i find cheap l98 heads.. and should i go with the edelbrock intake or holley... you just have to go to find an egr from a truck you can buy them at a partsd store right? thanks
Shawn

DM91RS

I am running the adapter that I made for a 670 Holley with the stock bore TBI unit. It just bolted on. And.....I agree with you about the Edel and upgrading.

DM91RS

BIGpimpINtheBIGredRScar

Geesus LOL

I would go with the Holley with a 350 for sure. Read Tim's (NJSpeeder) post's about flow on these two intakes.



Darrell

DM91RS

Is that a GM part numberfor the EGR valve or ?

TP355Z

use an egr off a 1985 Z-28 Camaro w/a 305. DONE


TP

Snowdog 91 Formula

Yes that is a GM part #. I was told an EGR valve up to 1985 should work fine. The part # on that particular EGR valve is for an 81 Caprice and works fine.

DM91RS

Thanks guys!!!!!!!

RacerXWS6

I run that intake with a Lunati 218/458 bracket master cam. The only problem Ive encountered is the EGR wont clear my TBI. I didnt think of the spacer idea. Never crossed my mind. Ill give that a try, so Ill stop getting a code. I have no cold start issues, the RPM range is wide, so it works well with a lot of cams. I also should mention its one of the few intakes Ive ever installed, and not had even a minor oil leak with. I love it.

DM91RS

Hello and welcome to the board. I'm glad to see that setup works well for you. Is it a 305 or 350?

RacerXWS6

My car is an 88 Formula 305. Im not new to the board. I was here long ago before Dirk shut it down, and this is my first post back on this board since then. Ive cruised by from time to time, but I must admit I miss the lounge, but not the drama that was in it.