I am doing an Ls1 swap in my Formula but I want to have all of the stuff before starting the swap so it won't be happening till next year sometime. I am tired of seeing it sitting in the garage everyday and just want to get it on the road and have a little fun with it for now. I picked up a rebuilt Lo5 today out of an 89 Suburban. It has a Crane cam in it but I don't know the size. It does have a Ca. carb # so I know it's still fairly small. I heard it run yesterday and pulled it today. I took the tbi off and am going carb. I have my N10 system that will be going on with stock manifolds, Magnaflow cats, and American Thunder catback. I am also thinking of puting in a gear drive cause I like the sound and have never had one so I wanna try something a little new. I am trying to find a T5 to put in it. Now I haven't had a carbed car in 8 years so it feels like I'm starting over. I am thinking about the Edelbrock 1406 elect. choke 600. Will this be to small? I had it on my old L69 and it was a great carb.

Now cam, the engine should be machined for roller but if not I am thinking of this cam
http://store.summitracing.com/partde...0&autoview=sku
Now I know the heads are a big bottle neck and the lift is really limited but I wanna squeeze what I can out of it. I might pick up a set of Vortecs but doubtful. I just wanna have a little fun with the car this summer instead of looking at it sit everyday. I am on a budget of $1,600 to get it back on the road, including a tranny. Any other thoughts would be appreciated.

 

Oh steve, let me get my hands dirty with you!
l05 with carb will be no slouch.
Let me recommend from personal experience, the pete jackson gear drives. Very solid peice of work and more fail proof then other peices I have seen.
I agree the 1406 is a good peice for your l05 very common starting carb for many many sbc applications. streetable and you will have the power you desire.
maybe consider keeping the cam you have now? chances are if its smog legal its the best one that could be picked for it. just watch yoour budget, if your finishing it up and have the cash, hell, throw it in. I know I would. Keep me posted

 

Ok, I'll keep you posted. That's what I was thinking too abou the cam. I will see how it performs then go from there. It will be done by the end of June, hopefully mid June. I am dressing it up some with an aluminum timing cover and valve covers too.

 

two peice timing cover for easy cam swaps? *nudge*

 

T5 and Edelbrock carb is a terrible mix. Edelbrock carb is the "right" choice if you are only interested in a shiny car.

A 650 Holley DP is what you should go for.

Gear drive and two piece front cover are a waste of money for this application. How many times are you going to change the cam before you do the LS1 swap? If you're made of money, go for it. Otherwise, save it for the LS1.

 

Yeah I don't need a 2 piece cover, if I wnna change the cam out I have no problem yanking cover. I'll look at the prices of the Holley. I had the 1406 on my 84 with a t5 and it was an awesome combo. Why is this a terrible mix?

 

I think I'll go with this intake
http://store.summitracing.com/partde...0&autoview=sku

or this one
http://store.summitracing.com/partde...6&autoview=sku

 

nice.

 

With a manual transmission, especially a T5, you want a carb that opens and closes the secondaries with the throttle. The Performer is a demand-type carb, that delays opening the secondaries to avoid bog. The double pumper opens and closes the secondaries with the throttle, and uses an accelerator pump in the secondaries to avoid bog.

As long as you're getting a manifold, you might as well get one that mounts directly to the '87-up heads. The X-Celerator is overkill for a stock-type cam and LO5 heads.

 

I agree, stay away from that xcelerator.

 

Professional Product intakes works for both pre and after 87 heads (not on Vortecs tow. Then you will need another one.)

Low priced and probably easier to sell later?

 

I think I found a Holley carb that will worrk for me and thanks for the heads up on the X-celerator.

 

I bought this intake yesterday but I'm still trying to find the right carb. I don't want to spend too much on a carb. I am finding plenty of Holley's that are 650 cfm but are vac secondaries. Will mech/vac secondaries make that big of a difference on a mild motor?

http://store.summitracing.com/partde...4&autoview=sku

How about these carbs? I like the 1st but will it be too big?
http://store.summitracing.com/partde...5&autoview=sku

http://store.summitracing.com/partde...5&autoview=sku

 

I dont think its too big, your only talking 20 extra cfm.
and people put 650's on 302-305's all the time. so that reinforces my thinking. but I am no pro.

 

How about 1 of these cams?
http://store.summitracing.com/partde...4&autoview=sku

http://store.summitracing.com/partde...2&autoview=sku

The heads aren't going to flow much over 4500 rpm anyway so I may aswell make as much power below that as I can. Lift a tad too big on the exhaust for the 191 heads?

 

That first one looks good, your still pushing barely 450 lift.
that second one is just way to weak for a carb'd app.

 

Is it the 110/112 that makes it that much different? The rest is pretty much identical.

 

yea the lsa gives it a higher rpm range.

 

Looks like that is the cam I'll get. I'm going out right now to see if I can find a # on the Crane 1st.

 

Well I went out and looked and there are no visible #'s on the front of the cam. I still have the old intake on it so I don't bang up the new one dropping the engine in tomorrow so I didn't pull it out yet. I took a peek in the spark plug holes and found .030 on the pistons so I know it was bored when it was rebuilt. The valve springs have a red line down each of them, don't know if that means anything or not.

 

Vacuum vs. mechanical secondaries is the same issue I already discussed with the Edelbrock carb - vacuum secondaries are demand-based opening, and both opening and closing are delayed with a VS carb - not at all good with a T5.

4776 is the list # for 600 CFM DP, and 4777 650. Type those into summitracing.com's search. The "C" suffix indicates a chromate finish, "S" = shiny finish. So, a HLY-0-4777C is a 650 CFM double pumper with chromate finish.

As to your cam questions, a smaller LSA number gives a slightly higher RPM range, and a larger LSA gives a smoother idle. For this type of application, the smoother idle will be of more benefit than the slight increase in upper RPM power, but both of those cams are so mild even the 110 LSA cam isn't going to have any idle issues.

 

Looks like I'll be getting the 4777 with an electric choke conversion, thank you.