Heads and intake

[john#21]

I just got into a 95 gt and through searching the net I have landed on Yall's board.

I've got some local guys selling some gt40p heads for 250$ and a TF streetheat intake for 300$.

Would these two work well together? What cam choices would work with this setup?


I'm not building a track car, i just want some fun and excitement out of my weekend car. It has bbk Lt's and a few bolt ons already.




John

 

[1quk50]

id go with the tfs head an intake set up that would perform the best gt40p are ok.. but their like everything else theres something better.

 

[1quk50]

and a jay allen cam!

 

[Stopsign32v]

John I would save that $550 and put it towards a set of aluminum heads (AFR or TFS). As far as intake goes I think Edelbrock is hands down the best. I love the Trickflow heads but their intake suck IMO other than the box one.

 

[john#21]

I think i had read that somewhere. I have alot of options locally. There is a set of afr 185's and a edelbrock rpm II intake for sale aswell. keep the opinions coming, i am going to keep researching different setups

 

[armyed]

Well first I would say don't bother with the gt-40p heads. Im pretty sure the exhaust ports are raised on those and your LT headers might not fit and they are not a huge improvement over stock. Save up and you can find some nice aluminum heads used for a pretty good price. As far as a cam don't go with Jay Allen or any of the other guys as all they do is give Comp cams specs to cut the cam( Yes I have used Jays cam before) and he sells it for a bit more. You can go through Comp Cams and and tell them what you have and they will give you the same custom cam as he would for a fraction on the price. Im using a Comp XE274 off the shelf cam cut for a blower with over 500 to the wheels and it works great and was only $260. Now Intake you can take your pick as they all work great. I have a Systemax because they work awesome with a blown application and my 331 has a supercharger. A GT40/Cobra is one of the best for what your looking for as they tend to make more low end torque then the others and your car is not a high hp car and the other tend to make more at higher RPM once a good bit of mods are applied. if you just plain on doing a simple H/C/I setup the GT40/Cobra Intake would do you best with a nice set of Used Aluminum heads(Edelbrock Performers, Trickflow(More Expensive) and tons of others) and an off the self Comp Cam. I bought my Edelbrock Vic Jr heads which are 2.05 Intake and 1.60 Exhaust which are pretty big and nice for $800. Hope this helped

 

[armyed]

Oh and go to www.corral.net and go to the classifieds and you will find a ton of stuff for sale. But if you buy used, do like I do and have them take a picture of whatever they are selling with your name and date on a piece of paper next to the item your buying. Little way I try to not get ripped off. And make sure to check their feedback.

 

[Stopsign32v]

I think i had read that somewhere. I have alot of options locally. There is a set of afr 185's and a edelbrock rpm II intake for sale aswell. keep the opinions coming, i am going to keep researching different setups

Those heads and intake would make about 330+rwhp in your car on stock pistons if you notch them. :thumb:

 

[armyed]

Most H/C/I 5.0's with full Exhaust make around 290HP, Sometimes a little more and sometimes a little less. Your not going to Make 330 to the wheels with just an H/C/I and your heads being AFR 185's. Looking more at around 300. Also your not looking to make peak power you want the right combo to give you a nice Hp/Torque curve so you can feel it all the way up and not just up top. Dyno numbers dont win races

 

[Stopsign32v]

Most H/C/I 5.0's with full Exhaust make around 290HP, Sometimes a little more and sometimes a little less. Your not going to Make 330 to the wheels with just an H/C/I and your heads being AFR 185's. Looking more at around 300. Also your not looking to make peak power you want the right combo to give you a nice Hp/Torque curve so you can feel it all the way up and not just up top. Dyno numbers dont win races

My motor with untouched pistons, AFR 165 heads, Edelbrock Performer intake, and a custom cam made 328rwhp 337rwtq and 404rwhp 444rwtq on a 100 shot.

 

[armyed]

Most H/C/I 5.0's with full Exhaust make around 290HP, Sometimes a little more and sometimes a little less. Your not going to Make 330 to the wheels with just an H/C/I and your heads being AFR 185's. Looking more at around 300. Also your not looking to make peak power you want the right combo to give you a nice Hp/Torque curve so you can feel it all the way up and not just up top. Dyno numbers dont win races

My motor with untouched pistons, AFR 165 heads, Edelbrock Performer intake, and a custom cam made 328rwhp 337rwtq and 404rwhp 444rwtq on a 100 shot.

And whats the specs on the custom cam? It is possible to make those high numbers but at a cost. That is pushing the limits on an otherwise stock HCI car. Most people with a normal lift cam and not a hug cam make around 290-300 at most. This also depends on where you live and your altitude and if its hot or cold outside and what other bolt ons you have. But my main point is get a good solid combo and make more power through the whole power band and not just peak. That is what makes cars faster. My 331 before the blower made about 320 at the wheels. Now mind you it is an 8.5-1 low compression motor built for boost and not N/A and at the time had a Jay Allen blower spec Cam. Put 13# on it and a higher lift Comp Cam and it shot out 523RWHP. Just never look for Dyno numbers as a goal. Make good solid power through the whole curve.

 

[armyed]

The bigger the cam the more Peak power you can make but you loose that lower end that gets you off the line. Not to mention not all Dyno's are the same. One will give you 328 and take that same car to another and you may get 315. But im going off Numbers ive seen from 5.0's off a dyno with HCI's in Georgia.

 

[Stopsign32v]

I live in SC so the numbers for us should be the same. My car with 8psi on that combo made 480rwhp. I think your 331 has alot left in it. Not sure what your specs are and why you went with a 8.5:1 compression. But hey, if you are happy with it that is all that counts. Me with my combos...I spend money where it counts and it hasn't not payed off yet. I also am building a 331 and if mine makes any less than 400rwhp N/A I will be let down. What does your car run in the 1/4th? At Commerce my car on 8psi of boost ran 11.4@121mph.

 

[armyed]

I live in SC so the numbers for us should be the same. My car with 8psi on that combo made 480rwhp. I think your 331 has alot left in it. Not sure what your specs are and why you went with a 8.5:1 compression. But hey, if you are happy with it that is all that counts. Me with my combos...I spend money where it counts and it hasn't not payed off yet. I also am building a 331 and if mine makes any less than 400rwhp N/A I will be let down. What does your car run in the 1/4th? At Commerce my car on 8psi of boost ran 11.4@121mph.

Yes there is a lot left out of the car right now since its still a stock style block. I have a ton of timing pulled on it. I went with the low compression to make it a little safer to run more boost. Next motor will probably be around 9-1 or 9.5-1 but will be a dart block. I haven't had a chance to run it at the track since ive been in Iraq for about 3 years and when im home I have Family duty with the wife and kid. I will hopefully get to one on my next leave in late November. Hoping for low 11's or high 10's if I can find some traction and my rear end holds up. Most people who build 347's with a mild cam don't get to 400 at the wheels. You can go with a very aggressive cam and get there but they aren't the most street friendly. Also depends on how high you go with your compression, If you want to stay N/A with it or plan to put a power adder on it. If you plan to stay N/A then you can get a 331 with high compression and wild cam and get there but with forced induction friendly compression you probably wont get there. If you do let me know your combo as I learn new things everyday...hahaha

 

[Stopsign32v]

Well my stuff do end up running right at or more than I plan and I don't think this is going to be an acception. No I do not plan to run any boost through THIS motor but it will be plenty street friendly. If you want pm me and I'll give you all the advice I know as far as what you are doing. If you are making 535rwhp through a supercharged motor on the stock block........eek! You are a sitting time bomb! I hope you have a girdle on it to hold everything together.

 

[armyed]

Well my stuff do end up running right at or more than I plan and I don't think this is going to be an acception. No I do not plan to run any boost through THIS motor but it will be plenty street friendly. If you want pm me and I'll give you all the advice I know as far as what you are doing. If you are making 535rwhp through a supercharged motor on the stock block........eek! You are a sitting time bomb! I hope you have a girdle on it to hold everything together.

Its all in the tuning and fuel delivery my friend. I have no doubt I will probably blow this thing up eventually but I drive it so little since im overseas 9 months out of the year it should last a good while for me. But who cares, once it goes boom ill have a dart block jumping in there. And yes it has a girdle to hold everything together when it does go boom..hahaha