[vinniekq2]

intake/carb if the fuel "volume" is ok

[LJM97Z]

Originally Posted by vinniekq2

intake/carb if the fuel "volume" is ok

I don't see the intake makeing much difference, & the carb was changed & it likes the 750dp, I'm not going to stat throwing more money at it changes things, I've been told by many the RPM intake is more then fine.

I think there is a problem & i just can't pin point it.

[vinniekq2]

when you get the correct answer,please post it here. I see 1 5/8 headers and manifold/carb/fuel delivery as all needing upgrades.( what I found the best upgrades in my 67 Camaro when I was stuck at 12.20) I think there is a lot more in the car somewhere???

[LJM97Z]

Originally Posted by vinniekq2

when you get the correct answer,please post it here. I see 1 5/8 headers and manifold/carb/fuel delivery as all needing upgrades.( what I found the best upgrades in my 67 Camaro when I was stuck at 12.20) I think there is a lot more in the car somewhere???

What intake/carb would you recommend? What about the headers/exhaust?

[idontdrivericeieatit]

Yea there is for sure something going wrong in this combo got friend with std bore 350 with comp 284h cam 507 and 510. Lift and crappy 882 heads ported and polished eddy performer rpm with 750dp carb with 373 gear in pickup thats 4000 pounds and hes running 92 mph in 1/8 you should be smokin him with what you have

[LJM97Z]

Originally Posted by idontdrivericeieatit

Yea there is for sure something going wrong in this combo got friend with std bore 350 with comp 284h cam 507 and 510. Lift and crappy 882 heads ported and polished eddy performer rpm with 750dp carb with 373 gear in pickup thats 4000 pounds and hes running 92 mph in 1/8 you should be smokin him with what you have

This doesn't surprise me lol.

[vinniekq2]

If it was my car,I would use a vic jr intake,850 H.P.,headers would have 1 3/4 primaries(or 1 3/4 primaries stepped to 1 7/8),I would have 1/2 fuel line from tank to regulator, if it was driven long distance I would leave the gears you have,when you get more serious about race I would look at trans/gear combo ,,,now spend some time on suspension, alignment,pinion angle,chasis height,weight transfer(shocks and springs) unsprung weight

[F-BIRD'88]

IMHO you do not need a new intake or carb, or 1-3/4 headers . what you are doing with the little cam is not too bad.

But to get to 11's you will need more power. and there is something killing the top end by at least 2.5 MPH.

I had a 130GPH mech pump yet that turned out to be my problem. switched to a 72GPH rated electric (7psi), big diffeence. no more top end fuel starvation.
I would look at the fuel system, exhaust system and cylinder heads for power.
what is the part number stamped on the front of your dart heads?
Again if non platinum series, they need work.
If you want a cam, the COmp XE284H-10 cam does work well. The crane solid will work better.
Why did you take the 4.10's out? re converter slippage %: recalc using the true effective loaded rolling radius of the MT tires. (measure from the ground to the axle C/L) you will find the tires are shorter than 28".
when I estimate your loaded tire radius I get 7% slipage 5900 rpm 108MPH 27" effect diameter.

If flowmaster mufflers they always cost performance. Sometimes a lot of perf. You'd be amazed.
uncap with collector extensions and test.
The converter efficietrnce improves the further away from the stall speed you get (RPM), thru the traps.
Your trap rpm should be 6600+ rpm. You need to get your 60ft down 1.60 sec.

The weight seems pretty light. I'd rescale it. Everybody is repuatable until they get caught.
Because based on 3200#'s and 108 MPH you are making 375-380hp
based on 110.5 mph (87 MPH in the 1/8th) you are making 392 HP. This should be your trap speed now, not 108.
You need to add/find 50hp (after finding the power killer) and improve the launch to get it in the 11's.

[F-BIRD'88]

Another solid that works good in 406's with converter and gears.
Use either intake manifold. Comp cams # 12-502-5 CS 280TL-6 likes to rev.
Hot lash .018-.020" when you cold lash it cold lash at .014-.016
degree it in. 106 LSA 100-to-102 in C/L locked out timing.
rough idle oval/bracket race. more serious street strip.
The heads have to work for this cam to work.
Your car is working like you have entry level S/R heads. (heads , fuel system)
The nice thing about Dart heads is there is lots of meat for porting.
If they turn out to be the 180cc port Dart heads they will need serious serious work.

[LJM97Z]

They are the 200cc & i'm sure there the platinums, I'm really leaning towards the XE284H or 285HL, I've ran that cam in 2 different engines & it really worked great, tuning was easy also.

When i calculated the converter, It ran a 105 that night, so it came out to 12% with a 28" tire, The tires are 275/60/15 MT DRs. When it ran 108 it came up 10%, I'm hoping i'm not running through the converter.

When i 1st. put the car together i was running a stock converter with the little cam, Tires were 255/60/15s (27"), In the beginning the car pulled really strong in high gear.

The mufflers are slow masters.

[F-BIRD'88]

The tires are 275/60/15 MT DRs

Ya I got that, now measure the true loaded radius, on the car, on the ground and re-calc.
(They are effectively shorter then 28")

They are the 200cc & i'm sure there the platinums, good stuff,now just got to get them to do what they should
be doing. Once thing I found critical wiht thee heads and the Sportsman II's the manifold must be port matched to the
head.

SlowMaster mufflers.... you know what to do there.

look at the fuel system too.

engine compression test. valve springs gone away.