Holley 500/cam/T5 question

[66Sprint6]

I recently needed to get a new 2v carb, so I went ahead and got the holley 500 knowing it would be too much for now, but would be nice when I turbo. Well, my tranny is dyin out so it seems I will be doin the T5 swap afterall and prolly not the turbo (unless for some reason I rebuild the C4 and go turbo this summer) Anyways, I was wondering if the T5 would do anything to help the motor from choking, or would I have to put in a cam or somethin. Since I cant afford the turbo project just yet, what should I do to help out the choking without hurting performance (got a little civic si wantin to play). Lemme know guys, I need help on this one! Also, I am fixin to buy a jet extension kit with nitrophyl float. That way I can take left turns, lol. Think thatll help any?? Anyone got a 200ci cam for cheap, lol.
Matt

 

[xctasy]

By choking, you mean being weezey and stutering at high speed like an athmatic race horse?

 

[66Sprint6]

Actually, at high speed it performs beautifully, its when Im either punching it under 45 mph or like im cruisin at 35 mph and wanna get on it, when I push the gas it often stalls out until I let off and then it rebounds, it suuuuucks. Just wonderin if a cam will help relieve this, i know the turbo would, but fo rnow I have to find other sollutions.
Matt

 

[CZLN6]

Howdy Matt:

Welcome to the wonderful world of Holley tuning. You are experiencing a "Bog". It is caused by too much air causing a momentary lean condition or too much fuel causing momentary flooding. Your challenge is to figure which and tune to fix it. Given your discription of the performance and the large carb on a 200 I'm guessing the former. Do you have the carb mounted directly to a modified log? Or an adaptor?

The two possibily causes require different solutions, but it would be a good idea for you to buy and study one of the holley uning books on the market.

To tune for a lean bog I'd try the following. To begin with I'd start by using as much initial advance as your engine will allow. Make sure your accelerator pump is adjusted correctly for a full shot. And you might try enriching the low speed idle screws to help cover the transition lean condition.

You may need to buy the assortment of plastic pump cams to find the right one for your needs. You may need a larger diameter squirter to enrichen the large gulp of air when applying full throttle at low engine speeds.

I hope that helps.

Adios, David

 

[66Sprint6]

I will definitely look into gettin a tuning book soon. Unfortunately, my tranny is screwin up bad, I have no 3rd gear, but funny thing is, it runs AWESOME now, the tranny shifts real well into 2nd and I feel powerful with very little bog. Wierd, oh well, thanx guys!
Matt

 

[Anonymous]

Sorry about your tranny, Sprint.
I'm a fan of the C4, though, especially if you're going to turbo. Reason: you can install a high-stall (or variable-stall) convertor that will let that turbo jump up faster and put the power right on the ground. The end result is easier to drive on the street.

Of course, this opinion is tempered by my lazy nature that likes to come out when driving.

 

[66Sprint6]

lol,
Im pretty lazy but I love driving 5 speed, it is a rush for me so thats why Im gonna do it, besides, I like droppin clutch off the line, itll take a while to find the optimum launch RPM tho, but theres fun in that as well! Tranny prolly only has a stupid vacuum line loose but I wont tell neone that, lol, maybe itll get the T5 sooner! Altho it IS in the back of my head to just rebuild the C4 with go fast power handling parts and then use the money I saved on the turbo, but a 5 speed would be wicked fun! Then I could prolly work all summer and put a cam and some roller rockers etc in it to help the carb out. THEN turbo next year sometime. I dunno, project ideas change like the wind around here :roll: Never know until it comes time to do somethin
Matt

 

[Anonymous]

I just did the T-5 swap. With a 4 cyl T-5 you will definately be running in the mid to upper rpm's more often because it is fun. Eventhough the clutch setup is the same as my old 3 spd, the car launches much easier due to the gearing. Put the money into the T-5 now rather than later. I spent less than $1000 on the swap. You can see my post in the Driveline forum which gives more detail.

 

[66Sprint6]

Im already workin on my T5 now. A vac line on my c4's modulator gave out so I had to shift on my own for a bit and only had 1st and 2nd to drive in. Funny thing was, the chokin stopped and the car ran like a freakin dream. Now its "fixed" and it sux again, lol. Its all tranny. Got a job now guys, lookin t6o have the turbo AND the T5 soon!!!!!!!!!
Matt

 

[Anonymous]

You ARE running rich then. The vaccuum line clue is how I know this, do the same on my truck and it feels 10Xs better. Lean that carb out a bit.

 

[66Sprint6]

Alright, that I can do!!! Anyone know why the stupid thing wont tstart after its been sittin awhile??? It takes like 5 tries and idles like crap then after like 5 minutes its fine. Lemme know
Matt

 

[kirkallen143]

Howdy all,
I would like to get y'alls opinions on an upgrade for my 200 in the ' 73 bronco. I do a little 4-wheeling, haul a 18 ft aluminum boat to the lake once in a while, and just some good ole driving around (highway and in town). Don't need to be drag racing in it from light to light, but just some good power (so it can stand on it's own, if you know what I mean).

Here is what I have on it at the present:

Cater YF-1 (drilled both jets low-.065 & high-.11)
Timing set @ 10 degrees BTDC
DIY ram-induction intake w/ stock filter(thanks Mustang Geezer)
4.10 gears (running @ 2700 RPMs at 65 MPH)
Stock 3-speed manual, cam, exhaust and exhaust manifold
As far as I know, stock ' 75 head w/ Fel-Pro thick gasket (original CR of 8.3:1)

Just wanted a little input from you guys, since you might have more experience at this than me. Thank you for your time.

Kirk ' 73 bronco