For those familiary or who have had their stock heads sent out to him and worked on, can you tell me a few things:

1) how long did it take from the time you sent them off till you got them back

2) how satisfied you are with their performance, and what cam, etc are you running with them (this will be for N2O on an auto)

3) do you recommend a bigger cam than the LT4HC, such as CC306?

4) what combo are you running with these, flow numbers, track numbers and anything else you'd like to throw my way.

Thanks in advance, tryin' to decide against going another, more expensive route.

t/c

 

I believe turn around time was 3 weeks on mine. I went with the larger valves and the heads flow 283/192 peak...I have the flow chart at home but its not handy to post but I'm very pleased with the numbers he got.

As for cam, whether you go "bigger" than the hotcam or not, I would recommend a better cam. I chose the XE 224/230 and I think there is much to be gained by going with a more modern lobe design. The 224/230 is going to give you similar power with a bit better idle vacuum and driveability, because at very low lifts it is actually smaller than the Hotcam, and produces less valve overlap in that critical time when the exhaust valve is closing and the intake just starts to open. Overlap during this period tends to bleed off cylinder pressure at low rpms and might give you a nice lope but its not beneficial to low speed driving.

So my advice is if you are thinking hotcam, do the 224/230 instead and whether you go bigger or not should be based on your emissions testing requirements (if any), and your goals in terms of HP and ET.

My car put 362 hp to the wheels with this combo and my other mods, and that was at 13.9 air-fuel ratio. I believe it has 370 in it with the proper WOT fueling (just didn't have time to get it right that day).

Currently I've run a best of 12.32 @ 109.5 mph on a 1.7 60ft. There are faster out there for sure, but that's on the stock 3.23 gear and is a daily driven car. I am pleased with it.

 

Wow, that is impressive!

Sounds like a sweet package you got there, thanks for the info!

Dan

 

I have Lloyd's heads as well with the XE230/236 114LSA. I think @ .550 the numbers were 271/187cfm. I had an old tune and went to the dyno where I made 368rwhp/337rwtq @ 10:1 A/F. Since i couldnt change the the tune, I played with the regulator to simulate leaning it out. I finished the day at 383rwhp/353rwtq. In the low to mid range I picked 30+rwtq/22-25rwhp. The peak numbers were 15rwhp/16rwtq.

By the time I hit the track, the computer compensated for the manual adjustment and I was pig rich again. I ran 12.5 @ 114mph w/2.0 60'. I should have trapped 117mph with a leaner tune and traction.

 

Other than the fact that the car runs like a raped ape, got a hell of a low price on the heads (he might as well gave them away), and always answered my questions in great detail, I have nothing good to say about him



Cam is a XE230/236. Good for making power under 6500rpms. Streetable, works well with the heads. CC306 is a higher reving cam. You may not want to rev your car that high. Thats why i didnt pick it.
Flow numbers are 255 at .550 lift but the mid lift numbers are good too.. I forget. but they were good.. Headflow numbers arent everything and i didnt want a fully ported head because of how slow my brothers car ran with awesome flowing AFR's and a moderate cam.

I ordered heads he had already done. so it took a week to get em.
I havent run at the track but i pulled my friends car that traps 108 decently from a roll before my tune.. I am guessing the car will trap 113 now.

You wont be disappointed in lloyds heads.

 

I want to get my heads ported later by Lloyd, but I am still a little confused. Should I just call/e-mail him, and tell him what I want done? Then ship them to his address. How does he know which heads are mine? I don't know maybe these are dumb questions but I am curious.

 

Call him or email him. When he gets your heads, he punches your last name inot the heads.

 

I have a set of Lloyd Elliott ported heads as well. The turn around time was great(about 2 weeks, maybe less) and the heads looked great. My initial dyno numbers were 351hp/333tq with the 227/233 XE cam. I have since added a Hooker catback and found that a plug wire was laying on one of my Jet Hot LT's and had a burnt spot that was arching so I should pick up some more power when I return to the dyno. Lloyd is great to deal with as well. I didn't want to send my heads in for cores and Lloyd found me a set so I wouldn't have any driving downtime. Also, the price is very nice.

 

Okay, so the general consensus is that that is indeed a good route to go over say, CNC full-port job and still be capable of low 12's or better with say, the 224/230 XE cam. That sounds perfectly streetable to me (daily driver-'94 TA)

I'll probably go with that and about a 2800 stall vig, and maybe 3.73's out back.

Oh, last question (I think): Additional parts needed, like, should I change lifters as well, and size pushrods, springs and 1.6 roller rockers, doesn't Comp Cams make magnun rockers for LT1's, or at least ones that can work on this application that are cheaper than the Crane Gold RR's?

Thanks again guys, you've been a big help, my daily driver is about to be evil...or gettin' there anyways!

 

I wanted midlift numbers not peak numbers check out my flow numbers:

.1 66.8/53.3
.2 140.3/104.2
.3 202.1/147.8
.4 240.0/172.9
.5 264.9/187.8
.55 266.4/193.5
.6 267.9/197.0

reflowed by another shop:

intake only:

.100 67
.200 141
.300 202
.400 240
.500 264
.550 267
.600 267

very consistant IMO.

Matt.

 

Damn Matt, those are impressive flow numbers, as well as consistant as it gets!

This is DEFINITELY the route I'm going with the auto/Trans Am. Can't believe I've waited this long, actually.

The LT4 conversion on the '95 is gonna be more costly than I had planned on, by the time it's completed, it'll be playing catch-up to the TA.

 

Thanx