Thread: head upgrade disappointment

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Originally Posted by dave350v8

Thanks Dave that has reassured me,will try some of the ideas people have mentioned!

You might also want to PM Richard (Techinspector) about your performance issues, he always has some good ideas on camshafts that can optimize the performance of the heads!

Thanks Dave will do! Techinspector has given me great information in the Past....

i did some looking your heads will be fine as the flow is less the most good 180 runner. the 210 number is just that . just a number the heads on in take side may need help the ex is as good or abit better them some if there number as apples to apples . that very well could be why you did not see anything

Originally Posted by pat mccarthy

i did some looking your heads will be fine as the flow is less the most good 180 runner. the 210 number is just that . just a number the heads on in take side may need help the ex is as good or abit better them some if there number as apples to apples . that very well could be why you did not see anything

Hi Pat,Sorry dont quite understand, are you saying that perhaps they are not too big then?
Do I need to look at a cam upgrade, will that help
Thanks again

Here's some flow numbers on a bunch of different heads from different manufacturers done on a quality flow bench.... As with most anything, the more you pay the higher the quality of the product....well, not entirely true, just a generalization....

Real good information for anyone considering purchasing heads, or looking for reasons their performance is as good or bad as it is! Enjoy the read!!!!!

Weingartner Racing

going to the company for flow numbers as there smaller heads in 180 cc as like AFR and dart . and cantfelds others and using there FLOW Numbers up to other heads of that size 180you heads as a 210 and the SMALL lift is not to big . your heads a s 210 the flow is not much if any thing at small lift is not much different then there 195 procomp on intake side. flow numbers are just that. many play with numbers. there many ways this can be done to make a head look better still not wet flow or how well the port works with intake on the flow bench or with a pipe off the ex side or bore side. many play this game but AFR number are good off the company s web i made very good power with them and many dart heads on bbc making 950 past 1120hp on real dynos

Thanks Dave, thats a lot to digest,looks like mine are not too bad! I suppose you get what you pay for....

Originally Posted by pat mccarthy

going to the company for flow numbers as there smaller heads in 180 cc as like AFR and dart . and cantfelds others and using there FLOW Numbers up to other heads of that size you heads as a 210 and the SMALL lift is not to big if any thing could be hurting you . your heads a s 210 the flow is not much if any thing at small lift much different then there 195 procomp on intake side only flow numbers are just that. many play with numbers. there many ways this can be done to make a head look better still not wet flow or how well the port works with intake on the flow bench or with a pipe off the ex side or bore side. many play this game but AFR number are good off the company s web i made very good power with them and many dart heads on bbc make 950 past 1120hp on real dynos

Thanks Pat for taking the time to look into them for me!

Originally Posted by dave350v8

Thanks Dave, thats a lot to digest,looks like mine are not too bad! I suppose you get what you pay for....

Yeah, but what you also have to consider is the usage of the parts you buy..... Do you really need a $2,000 to $3,000 set of heads for street use???? On race cars, we always go with the expensive, American made stuff....But racing is much harder on parts then a bit of street cruising. Personally, I'm not much on buying any of the Import knock off parts, not heads, cranks, rods, pistons, nothing, because I know how much I abuse things and I try to eliminate the weak links. I also know of a lot of folks will buy Scat or Eagle stroker kits and components, but wouldn't run an import set of heads!!! Guess a lot of it depends on just how much of your hard earned $$$$$$ you're willing to part with, and how much use and abuse these parts are destined to take......

Originally Posted by Dave Severson

Yeah, but what you also have to consider is the usage of the parts you buy..... Do you really need a $2,000 to $3,000 set of heads for street use???? On race cars, we always go with the expensive, American made stuff....But racing is much harder on parts then a bit of street cruising. Personally, I'm not much on buying any of the Import knock off parts, not heads, cranks, rods, pistons, nothing, because I know how much I abuse things and I try to eliminate the weak links. I also know of a lot of folks will buy Scat or Eagle stroker kits and components, but wouldn't run an import set of heads!!! Guess a lot of it depends on just how much of your hard earned $$$$$$ you're willing to part with, and how much use and abuse these parts are destined to take......

Your right in what your saying, Im using my car for summer use cruising and maybe 10-15 times down the strip each year!
Times are difficult over here at the moment,so I can only afford the cheaper options at the moment, if my engine goes bang
I dont lose so much. A lot of my mr gasket parts and others have got made in taiwan or china on them anyway!
Sounds like you do a lot of racing then, buying the best parts is totally understandable!

i worry about the seats in the cheap heads and them falling out many heat cycles on the street as well as long time holld out along with ripping the rocker stud threads out. more then the scat / arp bolt rods or.compstar H or I beam 4340 rods and cranks only scat and compstar the acid test has been done by many engine over the last 20 years i sold and built engines with them they will take way more then most can make for power. i all ways like to use usa parts when i can and i do in some builds. i lost some engine jobs by not using the import heads . buy a scat crank or compstar and buy usa heads guys i build stuff are way harder on parts then most any drag engine most are lower buck deals with scat cranks and rods.

I dont know what the flow numbers on the heads are. They should be more than you had before at your cams lift points with the old heads. Issue the intake manifold dosent flow more and is choking the air flow. Your next move should be a better flowing intake. A Torker II might be a good choice if the ports are not raised port heads. Should pick up about 30 CFM a runner. Educated Guess thats about 70 HP. Ty it with the small carb first. The exhaust side you need some headers.

there on the company webpage pro comp electric. but there is a new head and he as the new cnc chamber head. so the flow numbers may be way off ? who knows that why i flow them .as for it flowing better then a humper head yes it should but lower number they may not . i seen heads that did not start making any steam till much bigger lift numbers. were smaller heads did as good or better the procomp head s flow number at the low lift were is cam size . is not that hot most 180 heads i looked at flow better. most over 20 cfm something on the intake side . i but did not care to post the all the numbers up lazy on my day off .i would do headers first . bigger carb then a 600 . would be nice to know what intake he has now

OP has RPM intake.

that cam in first gear second may not be bad but in fifth that thing must be a pig. i would have to work the numbers out but he must be dam near under the cam at hi way speed i would keep the dual plane